3 Layers of Art wall
Tunica:
Intima=Innermost layer (endothelial cells)
Media=Middle layer (thickest)
Externa (Adventitia)= Outermost layer

Vaso Vasorum
Tiny vessels that carry bl to the walls of larger arteries
Feed Adventitial layer and some of medial layer

Duplex Ultrasonography
aka Duplex U/S
<strong>2 elements:</strong> Gray Scale &amp; Color doppler
Both displays are presented on the same screen ("duplex") to facilitate interpretation.

Duplex Ultrasonography-Gray Scale
Visualizes the structure or architecture of the body part. 
No motion or bl flow is assessed. 
This is the way plaque is dir imaged in a bl vessel, w/ the reader typically commenting on cross-sectional narrowing (&gt;70% is typically considered worthy of treatment)

Duplex Ultrasonography-Color Doppler
Visualize the flow or movement of a structure, typically used to image blood w/in an art. 
We see bl flow vel incr through a region of narrowing, like a finger pressing up against the end of a running garden hose. 
Incr vel indicate a region of narrowing or resistance (vel &gt;250 cm/s typically considered worthy of treatment).

Stenosis Criteria
<strong>Descrip.   DR   PSV cm/s EDVcm/s  Ratio
</strong>Normal   &lt;50%      &lt;125         &lt;40       &lt;2
Mild      50-69%    125-230    40-100     2-4
Severe   &gt;75%      &gt;230         &gt;100      &gt;4
Occlusion          Flow not detected

LE Art Anatomy
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" >

Common Terminology to be familiar with
<span style="text-decoration:underline;">Anechoic / Echo lucent: </span>Complete absence of returning sound waves, area is <strong>black.</strong> 
<span style="text-decoration:underline;">Hypo echoic:</span> Structure has very
few echoes and appears darker than
surrounding tissue. 
<span style="text-decoration:underline;">Hyperechoic/Echogenic:</span> structure appears
<strong>brighter</strong> than surrounding tissue
<span style="text-decoration:underline;">Inflow, Outflow, Runoff:</span> refer respectively to Aortoiliac, Femoropopliteal and trifurcation art

LE Art
Abd AO bif @ the level of the 4th lumbar vertebrae creating the CIA's (Common Iliac Art)RT CIA is longer than the LT &amp; crosses over the LT Iliac Vns
CIA bif into Internal/External Iliac Art

Plantar Arch
<answer>
<span style="text-decoration:underline;">Anterior Tibial Art</span>
↳Dorsalis Pedis Art (DPA) major branch is Deep Plantar Art (dpa)

<span style="text-decoration:underline;">Post Tibial Art</span>
↳2 major distal branches: Lateral plantar art w/c unites w/ Deep Plantar art to form the Plantar arch
</answer>

What membrane passes superficial to ATA
After arising fr the dist Pop A, ATA passes superficial to Interosseous membrane

Landmarks for Tibia &amp; Fibula
Ant Tibia: ATA &amp; paired ATV's
Post Tibia: PTA &amp; paired PTV's
Medial to Fibula: Peroneal Art &amp; paired Pero Vns

LE Art -EIA
Arises from the bifurcation of the common iliac art 
EIA travels inferolateral along medial side of Psoas Major muscle
EIA → CFA when passing under the Inguinal Ligament

LE ART- Internal Iliac Art (IIA)
aka Hypogastric Art
Supplies bl to the walls &amp; viscera of the pelvic, genitals, gluteal region, upper thigh &amp; perineum
Mult branches provide important collaterals in the presence of EIA obstruction

LE ART-CFA
Formed fr the EIA under the Inguinal Lig coursing Lat to the CFV
It is approximately 4cm long and
bifurcates into the SFA &amp; the DFA

LE ART-DFA
Arises fr the LAT side of the CFA &amp; courses down the thigh in closer proximity to the femur than the SFA (Posterolateral to SFA)
aka Profunda Femoris
Supplies bl to thigh muscles &amp; hip joint
Its branches are a critical collateral source in case of SFA obstruction

LE ART-SFA
Originates 4cm below the Inguinal Lig arising fr the CFA
Courses along mid aspect of thigh at the level of adductor Hiatus/Hunter's canal and enters POP fossa (behind knee) and becomes POP A

LE ART-POP A
-Begins @ Adductor Hiatus
-Continuation of the SFA.
-Descends lateral &amp; bif just below the knee into the ATA &amp; Tibioperoneal Trunk
-Supplies bl to knee section &amp; calf muscles

LE ART-ATA
First branch of POP A
Courses betw Tibia &amp; Fibula terminating in the DPA on the ANT surf of the foot
Feeds ANT lateral aspect of leg &amp; medial aspect of the foot

LE ART-Tibioperoneal Trunk
aka Proximal/Post Tibial Art
2nd branch off distal POP A w/c divides into PTA &amp; Pero Art

LE ART-PTA
Post to Tibia, behind Medial Malleolus
Terminates into medial/lateral Plantar art of the foot
Feeds medial aspect of lower leg &amp; foot

LE ART-PERO Art
Adjacent to the border of Fibula (small bone)
Supplies Lateral aspect of leg &amp; foot
Courses deep in the post compartment of the leg.

LE ART-DPA
ATA comes on lateral aspect of ankle and → DPA w/c branches into Deep Plantar Art &amp; part of Plantar arch

LE ART Pathway
AVF: may be due to surgery
Pseudo Aneurysm: due to needle, trauma, surg, catherization
Peripheral Art Aneurysm: ↑ BP. Most likely occur in the Dist SFA/POP A

LE ART Disease
Diabetes is the major risk factor
PPG in leg does NOT diagnose superficial thrombophlebitis

Guides to performing U/S guided tx compression of pseudoaneurysm
Adequately visible
Appropriate position so it can be uniformly &amp; completely compressed
Size
Location
Monitor Ankle Po

Limitations in neck compression w/ Thrombosis of the aneurysm
Pt currently on bl thinning meds
Pt has discomfort; no sedation available

Popliteal Entrapment
Caused by an abnormal insertion of the gastrocnemius muscle compressing on the Pop Art
Repeated trauma can lead to aneurysm w/c are found bilat in &gt;10% of cases; thrombosis
Usually occurs in young athletic men

Compartment Syndrome
Obstruction of a section of the leg esp in the calf creating ↑ Po due to DVT, lymphatic fl leak, hemorrhage (trauma) or edema w/in osteofascial membrane
Can lead to Ischemia &amp; ultimately muscle necrosis
Sudden occurrence is a result of bleeding in compartment
Treatment usually incl fasciotomy

Blue Toe Syndrome
When embolic material moves distally &amp; gets lodged in the digital art
Causes cyanosis (bluish discoloration)
May be caused by any of the ff:
Aneurysmal disease, arteritis, Ulcerated &amp;/or atherosclerotic lesions, some angiographic procedures

Plaque Ulceration
Caused by thrombosis, intraplaque hemorrhage, embolization

Major risk factors of Atherosclerosis
Smoking
Hyperlipidimia
Family Hx
Diabetes
Hypertension
Sedentary lifestyle

Common locations of Atherosclerotic diseases
-Aortic Bifurcation
-Iliac/Femoral Bifurcation
-Tibial Trifurcations
-SFA @ the level of the adductor Hiatus (important site in diabetic pts.)

<question>
LE ART-Chronic Occlusive Disease<strong> 

Claudication</strong>
</question>
Peripheral Art Disease or PAD--1st stage
Pain in muscles during exercise occuring in buttocks, thigh &amp; calf relieved by rest
Inadequate bl supply to the muscle
Leg pain, cramps, tightness &amp; fatigue
Disease is usually<strong> Proximal</strong> to the location of symptoms

Pseudo Claudication
Mimics vascular symptoms
Usually orthopedic or neurogenic in origin

3 types of Claudication
<strong>Buttock: </strong>Aorto-iliac art occlusive disease if bilat pain. If pain is on 1 side=Unilat art occlusive disease
<strong>Thigh:</strong> EIA &amp;/or Common Femoral occlusive disease
<strong>Calf:  </strong>Popliteal/Tibial occulusive disease

Intermittent Claudication
-Leg pain after walking a certain distance in pts w/atherosclerosis
-Symptoms incl. pain, aching, cramping, or fatigue of the muscles in the lower limbs
-Quickly relieved by rest
-Typically occur in the calf  
-Po drops distal to the obstructed segment after exercise

<question>
LE ART-Chronic Occlusive Disease

<strong>Rest Pain</strong>
</question>
2nd stage---Persistent
Severe symptom of diminished bl flow
Occurs when limb is not dependent (ie pain occurs @ night when at rest but helps when pt sits on side of bed or stand) gravitational effect

<question>
LE ART-Chronic Occlusive Disease

<strong>Necrosis</strong>
</question>
3rd Stage---Most Severe
Tissue death
Revascularization or amputation is usually required

Signs &amp; Symptoms of Chronic Art Disease
Loss of hair on affected extremity
Thickening/discoloration on toe nails
change in skin texture (Shiny/tight)
Redness in the foot
Art Ulcers
Pedal Ulcer

Causes of Chronic Occlusive Disease-ASO
Atherosclerosis Obliterans (ASO)
Plaque build up on intima leading to hardening of the vessel
99% of Chronic vascular disease=ASO (plaque)

Causes of Chronic Occlusive Disease- Buerger's Disease (TAO)
Inflammation of Art/Veins
Prevents bl flow to distal sections of the body (ie fingers, toes, nose)
Occurs equally in UE/LE
Common in heavy smoking men
Starts distally→ proximally= <strong>NO collaterals</strong>

Causes of Chronic Occlusive Disease- Takayasu Arteritis
aka Pulselessness Disease
Inflammation of Tunica Media/Intima
Inflammation of AO/AO arch

Causes of Chronic Occlusive Disease- Leriche's Arteritis
Occlusion in ART of Abd AO
Assoc. w/ claudication of LE w/c can cause Male impotency

Causes of Chronic Occlusive Disease- Polyarteritis
Mult art are swollen/painful
Related to trauma/surgery

Causes of Chronic Occlusive Disease- Temporal Arteritis
Idiopathic of Superficial Temp Art

Acute Arterial Occlusion
Results from trauma, embolism, thrombus
No Collaterals develop w/ Acute Art Occlusion

Arterial Ulcers
Near lat malleolus, toes &amp; over dorsum of the foot
Deep &amp; more regularly shaped
<strong>Trophic changes:</strong> Dryness, scaly skin, loss of hair, thickened toenails
Severe pain but very little bleeding

Symptoms of Acute Art Occlusive Disease 6 P's
<answer>
Pain
Pallor
Pulselessness
Paresis (weakness)
Paresthesia (numbness/tingling)
Polar (cold)

*An acute occlusion is an ER situation due to abrupt onset w/c does NOT provide collaterals
</answer>

Causes of Acute Occlusion Disease
Thrombus
Plaque
Dissecting Aneurysm
Trauma
Tumors
Entrapment of vessel
Hypercoagulability
Raynaud's Phenomenon

Vasospastic Disorders
Abnormal vasospasm of the digital art in hand/feet due to exposure to cold

Vasospastic Symptoms
<answer>
Pain, Paresthesia, Skin color changes:

<span style="text-decoration:underline;">Pallor:</span> Paleness or whiteness of skin due to deficient bl supply
<span style="text-decoration:underline;">Rubor:</span> Reddening of the skin suggestive of vessel damage or dilatation secondary to reactive hyperemia 
<span style="text-decoration:underline;">Cyanosis:</span> Bluish discoloration usually caused by presence of deoxygenated hemoglobin in the bl
</answer>

LE ART Non-Imaging exam
Physical Exam
Doppler Waveform
Doppler segmental pressures
Palpation
Auscultation
CWD

LE ART Non-Imaging exam- Physical Exam
Skin color changes
Temp (warm vs. cold)
Lesions (ie ulcerations)
Capillary filling indicates obst in art perfusion
Elevation/dependency changes (elevation turns pallor) and dependency turns rubor

LE ART Non-Imaging exam- Palpation
<answer>
Pulses/aneurysms
AO
CFA
POP A
DPA
PTA/ATA

0-4 (0:No pulse; 4:Aneurysmal/bounding)
</answer>

LE ART Non-Imaging exam- Auscultation
Stethoscope used to listen for a bruit (mainly after stenosis) heard over an art
Bruit is a vibration transmitted to surround tissue.

BRUIT
Noise heard thru stethoscope
Results in turbulence causing tissue vibration Distal to stenosis
Assoc w/ hemodynamically significant lesion
Absence of Bruit may be due to a very tight stenosis (ie &gt;90%)

"Vibration/Thrills" may be due to the ff:
AVF
AVM
Cardiac murmur
Dissecting Aneurysm
Post stenotic turbulence
Patent Hemodialysis graft

4 sites auscultated by stethoscope
CCA
AO
Femoral A
POP A

Absence of Bruit suggests
W/ severe stenosis (&gt;90% DR), bruit disappears bec art bl flow ↓ (aka Pre-occlusive) &amp; there is no longer tissue vibration w/c would usually occur distal to a &gt;50% stenosis

LE ART Non-Imaging exam- CWD
Eval plaque, stenosis, narrowing disease
Approximate location of plaque/disease
Follow up post surgery
Less expensive

LE ART Non-Imaging exam- CWD limitations
Wounds, dressing, casts
Obesity
Less definite location of disease
Ca++ vessels yield falsely elevated doppler po
Has trouble discriminated betw obstructive disease of CFA and EIA

LE ART Non-Imaging exam- CWD Method
<answer>
Pt Supine, slight oblique &amp; knee extended
Use 8-10 MHz 
Obtain waveforms fr: CFA, SFA, POPA, PTA, DPA, PERO art

Malleolus: prominent bony portion in ankle
</answer>

LE ART Non-Imaging exam- CWD Results
<answer>
Normal: Triphasic waveform w/diastolic reversal of flow
Abnormal: Monophasic waveform

<em>Abnormal post exercise:</em> Slow upstroke w/ rounded peak, slow down slope w/ reversal of flow
</answer>

LE ART Non-Imaging exam- CWD sources of error
Improper probe position  
Incorrect angle s/b 45-60
Inadequate amt of gel used
Excessive Po on end of probe
Inadvertent probe motion

Reasons for a False + test (abnormal flow pattern but W/O any obstruction) in a CW technique
<strong>Extrinsic compression </strong>fr tight clothing, tumors, ascites, pregnancy, obesity, improper pt positioning or pain causing muscle contraction
<strong>Peripheral Art occlusive disease (PAD): </strong>poor inflow=poor outflow
<strong>COPD </strong> due to elevated central venous Po
<strong>Improper probe angle</strong> or probe Po

Reasons for a False - test (Normal flow but with venous obstruction present) in a CW technique
Partial obstruction
Collateralization
Paired vns of lower extremity
Bi-fed sys (mult. deep vns)

LE ART exam-Duplex Method
<answer>
Supine position w/ knee slightly bent
Use 5-7 MHz linear probe
For obese pts use curved linear probe, ↓ F

Obtain images from CFA, DFA (prox), SFA (P/M/D), POPA, PTA, PERO, ATA

Obtain long, TRV, Gray, Color, PWD signals (45-60), measure PSV
</answer>

LE ART exam-Duplex Results
<answer>
<span style="text-decoration:underline;">Normal Analog Doppler Waveform uses a </span><strong>Qualitative approach</strong> (reverse flow component)
Gray: anechoic vessel w/ clean lumen
Color: filled up &amp; flow seen wall to wall
PW: Triphasic waveform

<span style="text-decoration:underline;"><strong>Abnormal</strong></span>
Gray: Plaque, aneurysm, bl clot
Color: filling defect
DR calculation in both planes
PW: Mono/bi-phasic w/ Tardus Parvus
</answer>

LE Art-Normal Peak Vel (PV) Waveform characteristics
As the obstruction increases, the
waveforms will become flatter 
<span style="text-decoration:underline;">Normal PSV:</span>
<strong>Femoral Arteries</strong> = 80-100 cm/s
<strong>Pop</strong> = 60-80 cm/s
 <strong>Tibial Arteries</strong> =40-60 cm/s
<span style="background-color:#ffff00;"></span>
Abnormalities in the PV may be
indicative of stenosis and occlusion. 
In early stages of stenosis and occlusion, the PV distal to the occlusion may actually
increase.
<em>first sign of abnormality is the absence of the dicrotic notch  </em>

Classifications of a Peripheral Art Stenosis
-Waveform Shape
-PSV
-Spectral Window/Envelope
-Look for focal acceleration of Velocities &amp; Distal Turbulence

Classifications of an Occlusion
<answer>
-Absence of flow
-Proximal flow is High Resistance
-Distal flow is Low Resistance w/ Tardus Parvus
-Collateral Flow

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" >
</answer>

Classifications of a Collateral Flow
-Low Vel Monophasic waveforms
-Lose Triphasic character
-Tardus Parvus appearance
-Low Resistance to degree of Ischemia

Pulsatility Index
<answer>
PI=<span style="text-decoration:underline;">Max Vel - Min. Vel</span>    
           Mean Vel

Peak Systolic to peak end diastolic vel divided by Mean vel

<img data-image_id="efc290bc-b9a0-4e1f-b752-b5a14023e2c2" 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>
</answer>

Pulsatility Index Results
Normal PI
CFA: &gt;5.5 (leg)
POP: &gt;8.0 (calf)
If no SFA disease, PI of &lt;5=Aorto-Iliac disease
<span style="background-color:#ffff00;">-Fist clenching ↑ distal Resistance causing more pulsatility; therefore, a closed fist will </span>
<span style="background-color:#ffff00;"> also ↓ diastolic flow</span>

Acceleration Time (AT)
Time fr onset of systole to the maximum peak velocity
Helps diff Inflow fr. Outflow disease
↑ or prolonged amt of time=proximal disease
Not affected when stenosis is distal to US beam

Acceleration Time (AT) Results
<answer>
AT &lt;133 m/s = No significant disease
AT &gt;133 m/s = Proximal disease

In severe stenosis, pre stenotic flow may be having ↓ diastolic flow &amp; ↑ resistance but have short AT
</answer>

Outflow vs. Inflow
<answer>
A. Outflow: Femoral
Bl is going to obstructed site
Proximal to disease (High Resistance)

B. Inflow: Aorto-Iliac Bl coming fr obstructed site
Dist to disease (Low Resistance)

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ABI
Compares Brachial systolic BP to the ankle Po to identify lower extremity art disease

ABI Method
ABI=<span style="text-decoration:underline;">Ankle </span>(↑est of either PTA or DPA)                   ↑Brachial
BP taken Bilat on Brachial Art (BA)
Inflate Po cuffs 20-30 mmhg &gt; than last pulse
Release Po---&gt;1st sound heard is PS(peak systolic) Po
BP is also taken bilat @ the ankles w/ a CW probe on PTA &amp; DPA

ABI Results
&gt;1.0      NORMAL
0.9-1.0   ASYMPTOMATIC, Mild disease
0.5-0.9   CLAUDICATION, Moderate disease
&lt;0.5      REST PAIN, severe Art disease
             s/b &lt;60 mmHg

LE ART- Doppler Segmental Po (DSP)
Taking BP (only systolic components) of the diff segments of the body
Part of ABI exam, but helps narrow down area of disease

LE ART- Doppler Segmental Po (DSP) Method
Supine
Bilat BA &amp; ankle Po &amp; calculate ABI
Bilat BP of LE w/ help of 4 cuff or 3 cuff technique

LE ART- Doppler Segmental Po (DSP) Order
<answer>
Bilat Brachial Po
Ankle Po (DPA &amp; PTA)
Calf (below knee)
Above Knee (low thigh)High Thigh

*If thigh Po done first=false BP for lower cuffs
</answer>

<question>
LE ART- Doppler Segmental Po (DSP) 
4 cuff technique
</question>
High Thigh
Low Thigh (above knee)
Below knee
Ankle
Can diff betw inflow/outflow disease
Thigh Po is &gt;30 mmhg than the highest Brachial Po

<question>
LE ART- Doppler Segmental Po (DSP) 
3 cuff technique
</question>
<answer>
Thigh cuff
Below knee
Ankle
More accurate 
Cant diff betw inflow/outflow disease
Thigh Po ≥ Brachial Po

Small "narrow" cuff= falsely ↑ elevated bpLarge cuff= falsely ↓ decr bp
</answer>

LE ART- Doppler Segmental Po (DSP) Comparisons of BP
1. Brachial to HT: HT s/b @ least 30 mmhg &gt; than the higher brachial BP
2. Vert Po: (Comp adj segments in same extremity)  BP s/b w/in 20 mmhg diff
3. Horiz Po: (Comp segments Rt -&gt;Lt) No more than 20 mmhg

LE ART- Doppler Segmental Po (DSP) Results
If Po diff betw HT &amp; BA is &gt; 30 mmhg= disease is in Iliac section &amp; probably Proximal Femoral section
If Po fr AK &amp; BK is &gt;20 mmhg=Femoral disease
If Po fr BK to calf is &gt;20 mmhg= Popliteal/Tibial section
If Po diff betw adj segments (up/down) or LT/RT is &gt;20 mmhg=disease is on lower Po leg

LE ART- Doppler Segmental Po (DSP) Disadvantages
Cant discriminate betw Stenosis/Occlusion
Can't pinpoint exact location
Difficulty distinguishing betw CFA &amp; EIA disease
Ca++ vessels yield falsely elevated bp

Toe Brachial Index (TBI) Quantitative info
-Ca++ vessels can't be compressed (obliterated) such as Diabetic pts
-To r/o PAD perform TBI
-Are falsely elevated<strong> less</strong> frequently than Tibial ankle Po
-Useful in assessing small vessel disease in toes &amp; foot
-Air Plethysmography can also be used but PPG is easier to use

TBI Range
<answer>
0.6-0.8 (60-80% of ↑ Brachial Po)

Toe Po ÷ ↑ Brachial Po
</answer>

TBI rel to Peripheral Art Disease (PAD)
≥ 0.8 = NO Significant PAD
0.2-0.5 = CLAUDICATION
&lt;0.2 = REST PAIN

LE ART- Plethysmography: PVR (Pulse Vol Recording) or Pneumo (air) Plethysmography
<answer>
-Used in conjunction w/DSP
-Bl flow moves thru art vessels under the cuff
-Vol changes occur during systole in extremity
-Vol change displace air cuff bladder
-Po change in air filled bladder cuff is converted into analog waveform by Po tx

Waveform represents how much blood is flowing thru the extremities
</answer>

LE ART- Plethysmography Amplitude
Thigh/ankle: &gt;15mm
Calf: &gt;20 mm
If AMP is lower, disease is probably present
-It is only marginally meaningful diagnostically
-Usual <span style="text-decoration:underline;">cuff Po in ART Vol recording</span>=<strong>65 mmHg</strong>

LE ART- 3 Methods of PVR
Air Cuff
Strain Gauge
PPG

LE ART- Strain Gauge
Uses mercury filled silicon like tube that has electrodes on both ends

LE ART- Photoplethysmography (PPG)
<answer>
Detects cutaneous bl flow &amp; records pulsations
Photo cell attaches on digital underside of hand/foot
Photo cell sends infrared light into tissue w/ light emitting diode
Photo cell rvs back scattered light &amp; measures its reflection
↑Blood=↓reflection

Checks for blood clot in LE/UE
Checks Volume Changes
Most optimal exam for digit Po
</answer>

LE ART- PVR/DSP Test
Do DSP
Do PVR    
First upper &amp; lower thighs    
Calves then feet
Use table values of DSP

LE ART- PVR Waveform Analysis
<answer>
<strong>Normal: </strong>Sharp Systolic PeakProminent Dicrotic Notch (reflected wave)
<strong>Mildly Abnormal: </strong>Sharp Systolic Peak
No DN and diastolic flow moves away fr baseline
<strong>Moderately Abnormal:</strong> Flattened Systolic peak, Upstroke/Dwnstroke are =, No DN
<strong>Severely Abnormal: </strong>PW severely low or absent

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" width="236" height="178" >
</answer>

LE ART - Treadmill Testing or Exercise Hyperemic
For Pts w/ classic symptoms of Claudication
For pts free of heart problems &amp; is able to tolerate exercise
Used to determine if symptoms are due to Ischemia (lack of bl supply)
Help diff betw True &amp; Pseudo Claudication
Helps determine presence/absence of collaterlization
Resting vol can be obtained post exercise

LE ART - Treadmill Testing or Exercise Hyperemic Method
Do DSP/PVR
1. Leave Brachial/ankle cuffs on &amp; remove others
2. Have pt walk on treadmill @ 1.5-2 MPH w/ a 10-12% incline for 5 mins or until leg hurts
3. Quickly lay pt back &amp; obtain Bilat ABI w/in 3 mins
If ABI ↑ or stays same=Normal test
If ABI ↓ repeat only ankle Po in 2 mins &amp; repeat every 5 mins until ABI returns to pre-exercise level
If after 20 mins Po are not normal, STOP exam

LE ART - Treadmill Testing or Exercise Hyperemic Results
<answer>
During exercise, Peripheral Resistance ↓ diminishing or eliminating diastolic reversal flow (vasodilated)

If ankle Po ↓ post exercise, but recovers w/in <strong>2-6 mins</strong>=<em>Single segment or mild disease</em>
If ankle Po ↓ post exercise &amp; stays low for <strong>10-12 mins</strong>=<em>Multi segment disease or multi-level</em>
Above 10 mins=Severe disease aka Pseudoclaudication (neurospinal problems)

*Normally bp ↑ post exercise
</answer>

LE ART- Reactive Hyperemia
aka Post Occlusive Reactive Hyperemia (PORH)
Uncomfortable exam for pt

LE ART- Reactive Hyperemia Alternate Test
If Pt can't walk
Heart Disease
Pulmonary problems (ie COPD)
Poor Cardiac Output
If DSP w/in Normal limit (WNL) but symptoms are present
Alt method to PORH is <span style="background-color:#ffff00;">TOE Raises</span>

LE ART- Reactive Hyperemia Method
Do DSP/PVR then;
Place occlusive cuff on HT 20-30 mmhg higher than systolic Po for 3-5 mins
Maintaining Po in suprasystolic level will cause Ischemia at the site of cuff to cause symptoms of Claudication
Deflate cuff and immediately take ABI every 1-2 min intervals

LE ART- Reactive Hyperemia Results
<answer>
If ankle Po stays same or <strong>↓ by up to</strong> <strong>20%=NORMAL (&gt;100% incr in mean vel)
</strong>
If ankle Po ↓ <em>more than 20%=Abnormal Test</em> (bl takes longer to return)

Treadmill testing is preferred bec. it induces physiologic stress
</answer>

LE ART- Cardiac &amp; Claudication Treadmill testing
Diff between the 2 testing is speed &amp; elevation

UE ART-Anatomy
<img data-image_id="4d1cdee8-f321-4c25-bf1a-b0f50fb01034" 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" width="262" height="462" >

UE ART
<answer>
LT Subc A branches off AO Arch on LT side
On the RT, Innominate art/Brachiocephalic A branches dir off AO Arch and turns into RT Subc A w/c turns → Axillary Art @ Lateral Level of 1st rib
Axillary Art → Brachial art &amp; Bif into Radial/Ulnar

<span style="background-color:#ffff00;">*Internal Mammary Art (aka Internal Thoracic Art) is a branch of the Subc A</span>
</answer>

UE ART-Palmar Arches
<answer>
Brachial Art→ laterally→Radial Art→Superficial Palmar arch→Deep Palmar arch (joins the deep branch of ulnar art)

Brachial art→medially→Ulnar art→Deep Palmar arch→Superficial Palmar arch
</answer>

UE ART Pathology- TOS
-An extra rib in the thorax (cervical rib)
-Causes extrinsic compression on dist. subc or prox axillary art
-It can affect the brachial plexus (nerves that
pass into the arms from the neck) 
-Common in Females 20-40 y/o
-Anatomical structural deformity

UE ART Pathology- TOS (2 types)
<answer>
<span style="text-decoration:underline;">ATOS:</span> Art TOS caused by compression of the Subc Art

<span style="text-decoration:underline;">VTOS:</span> Venous TOS caused by compression or blockage of the Subc Vn
</answer>

UE ART Pathology- TOS Symptoms
Neck pain
UE pain, weakness or clumsiness
Numbness &amp; tingling in shoulder/arm
Intermittent pain/weakness during exercise
Headache

UE ART Pathology- TOS Tests
Adison's Test: arm extended 90
Costo clavicular Maneuver
Hyper abduction
EAST: Elevated Arm Stress Test

UE ART Pathology- TOS Steps in testing
<answer>
1.Arm @ rest, hand in lap
2.Arm raised to 90 angle (same plane as torso)
3.Arm raised to 120 or 180 angle
4.Exaggerated military stance
5.Adison maneuver position: same as #4 and head turned sharply to RT then w/ head turned sharply to LT

*Only ART component of TOS can be evaluated.  Symptoms due to Neurogenic Compression of brachial plexus
</answer>

UE ART Pathology- TOS Results
<answer>
<strong>Normal:</strong> PVR waveform does not change (DN)and BP remains constant

<strong>Abnormal:</strong> opposite
</answer>

UE ART Pathology- 2 conditions that produce similar symptoms to TOS (Thoracic Outlet Syndrome)
Carpel Tunnel
Cervical Disk condition

UE ART Pathology-Subclavian Steal Syndrome
-Caused by Art obstruction proximal to origin of Vert Art
-Stenosis/Occlusion in the origin of the SUBC ART
-Pt presents symptoms of POST circulation insufficiency
-So during arm exercise, a pt w/ subclavian steal syndrome can experience not only claudication of the affected arm, but also symptoms related to insufficient bl flow to the brain.

<question>
UE ART Pathology-Subclavian Steal Syndrome
U/S indications
</question>
Dist Subc Art is being fed by reversed flow in Ipsilateral Vert Art (normal flow s/b Antegrade) in Carotid duplex &amp;/or TCD
Higher resistance flow will show in vert art bec its now supplying bl to the arm rather than the brain
Proximal occlusion or high grade stenosis in Ipsilateral Innominate or SCA
Color-flow doppler will show retrograde filling of ipsilateral vert
Steal is in area of ↓ BP w/ a diff of &gt;20mmhg seen in the same side of the affected arm

UE ART Pathology-ASO
Plaque build-up on intimal layer causing hardening of the vessel
<span style="background-color:#ffff00;">Rare condition</span>

UE ART Pathology-TAO
aka Buerger's Disease
Occurs equally in UE/LE
Starts distally→Proximally (NO collaterals)
Rest pain in both hands/feet

UE ART Pathology-Takayasu Arteritis
aka Pulselessness Disease
Inflammation of Intima/media causes narrowing of the lumen
<strong>USA:</strong> Intimal thickening &gt;0.08 cm
PVR waveform abnormal

UE Art Pathology-Primary Raynaud's syndrome
Common in young women &lt;40 y/o
Bilat involvement
Often the cause isn't known
Benign w/ excellent prognosis
Intermittent digital ischemia due to digital art spasm bec of stress, exposure to cold, etc

<question>
UE Art Pathology-Primary Raynaud's syndrome
Vasospastic
</question>
-Vasospastic w/c vasoconstriction ↑ and dist resistance ↓ due to arterioles &amp; capillaries dilation
-Vasospasm of the arteries reduces
blood flow to the fingers and toes

UE Art Pathology-Secondary Raynaud's Phenomenon or Raynaud's Phenomenon
Most severe form of Raynauds
First manifestation of Buerger's disease
Normal vasoconstrictive response in arterioles &amp; capillaries are superimposed on a previous disease or obstruction
Ischemia is <em>constantly</em> present

UE Art Pathology-Raynauds Phenomenon Symptoms
-Hands/feet always stay cold &amp; may lead to Rest pain
-Digital color changes from pallor→cyanosis &amp; as blood flow returns becomes rubor w/ Throbbing pain &amp; burning sensation
-Numbness &amp; tingling in hands/feet
-

UE Art Pathology- Exam used to distinguish betw 2 types of Raynauds
PPG is used to obtain PVR waveforms (DN)
Quality of w/c is used to differentiate obstructive vs. vasospastic

UE Art Pathology-Peripheral Art Aneurysm
Bulge or dilation of vessel diameter
Ulnar aneurysms
Subclavian/Axillary aneurysm→ fusiform

UE Art Examination-DSP Method
Pt Supine
Do PVR waveforms &amp; DSP by applying Po cuffs to:
Upper arms (BA)
Forearms (below elbow) radial/ulnar
All 10 fingers using PPG method (reflection of light) and FBI

UE Art Examination-DSP Results
<strong>Brachial to Brachial:</strong> If Po diff is &gt;20 mmhg in adj or RT/LT side= disease is in ↓ Po side
<strong>Upper Arm:</strong> If Po is &gt;30 mmhg betw upper arm Po (RT/LT)= Severe Po reducing stenosis w/@ least 50% DR or occlusion of Subc Art/Axillary Art
<strong>Brachial &amp; Forearm:</strong> Po diff betw adj cuff sites on same arm should not differ by &gt;10 mmhg
<strong>Radial &amp; Ulnar: </strong>Po diff s/b 5 mmhg to one another

UE Art Examination-PVR Results
-Evaluate standard features of PVR waveforms
-Peripheral Resistance is usually LOWER in the UE than in the LE
-BA waveform w/o flow reversal is a common finding

UE Art Examination-FBI
<answer>
≥0.8 (80% of ↑ Brachial Po)

0.75-1.05 =Normal
&lt;0.75 =Abnormal
≤0.29 =Occlusion

Finger Po ÷ ↑ Brachial Po
</answer>

UE Art Examination-Duplex Method
Pt Supine
Arm moved laterally away fr body w/ palm up (anatomical position)
Use 8-12 Mhz linear tx
For Axillary Art, place pt arm above their head
For rest of exam, return pts arm to normal anatomical position (palms up)

<question>
UE Art Examination-Duplex Method 

Obtain ff images:
</question>
<answer>
SCA
AXILLARY ART
BRACHIAL ART
RADIAL ART
ULNART ART
PALMAR ARCHES (optional)

<span style="background-color:#ffff00;">Eval for signs &amp; symptoms of Aneurysm such as pseudo-aneurysm or discoloration</span>
</answer>

UE Art Examination-Duplex Results (Normal)
Tri-phasic waveform
Bi-phasic waveform can be considered normal in pts 65-70 y/o
Clear, spectral windows w/ narrow BW

UE Art Examination-Duplex Results (Abnormal)
<answer>
Monophasic waveform (low resistance)
Non-pulsatile flow pattern
Spectral broadening &amp; window filling
Aliasing w/ color doppler (Mosaic)
Flow dist to a critical stenosis = Monophasis w/ a sluggish upstroke to peak systole &amp; ↓ diastolic flow along w/ spectral broadening (Tardus Parvus)
<span style="background-color:#ffff00;">W/50% DR Stenosis---&gt;PSV will ↑ by 100% over PSV prox to stenosis</span>

*Ratio of PSV (@Stenosis) to proximal segments PSV will be a ratio &gt;2 w/ a Stenosis &gt;50% DR
</answer>

UE Art Examination-The Allen Test
Used to determine if Radial/Ulnar Art is occluded

UE Art Examination-The Allen Test Method
Pt Clenches his/her hands tightly
Pinch off radial or ulnar art w/ ur thumb
Allow pt to open their hand while still compressing on art

UE Art Examination-The Allen Test Result
<answer>
If hand turns <span style="color:#ff0000;"><strong>red</strong></span> then art that is not  compressed is <span style="background-color:#ffff00;"><em>NOT</em></span> obstructed

If hand turns <strong>white</strong> after opening then art that is not compressed <span style="background-color:#ffff00;"><em>IS</em></span> occluded
</answer>

UE Art Examination-The <em>Modified</em> Allen Test
PPG sensor applied to ea of 2/3 finger tips
Waveforms obtained b4 and during manual compression of ipsilateral (same side)radial art
<span style="background-color:#ffff00;">Continuation of waveforms during manual compression of radial art=hand/fingers are receiving bl flow via palmar arches &amp; normal ulnar art</span>

UE Art Examination-Limitations to Allen Test
Excessive dorsiflexion of hand = <span style="background-color:#ffff00;">false +</span>
Extension of hand/fingers= <span style="background-color:#00ffff;">Pallor</span>

UE Art Examination-Grafts
<answer>
-When ART disease is extremely severe
Surgical intervention can save the limb, bypass grafts are recommended
-Used to treat Peripheral Vascular Disease

Synthetic (man-made): Goretex &amp; Dacron
Autologus (fr body of same person)
</answer>

<question>
UE Art Examination-Bypass Grafts 

Synthetic
</question>
-PTFE aka Goretex is a <span style="text-decoration:underline;"><em>double line</em></span> appearance of the graft walls in U/S imaging
-Connection betw art &amp; vn by a synthetic material either in Upper arm, forearm or LE
-Reliable for a Bypass operation where the
distal anastomosis is placed <strong>above</strong> the knee in the POPA
-<strong>Not</strong> likely to stay open if placed <em>below</em> the knee

<question>
UE Art Examination-Bypass Grafts 

Autologus
</question>
<answer>
1. <strong>Reversed Vn (Saphenous) graft:</strong>   
Pts own vn is used w/o removing the         valves w/c allows bl to flow w/o obstruction
*Surgical removal of GSV &amp; ligation of all branches  
*VFR must be the same throughout the graft
*Distal end of graft being larger in diameter may have ↓ vel than at the proximal end
*Possible mismatch in size is a disadvantage
(distal anastamosis where a large diameter vn is anastomosed to a small diameter art)
<strong>VFR:</strong> Volume Flow Rate

2. <strong>In-Situ (In place) Grafts:</strong> GSV is left in place &amp; connected to affected arm
Valves are removed &amp; branches ligated
Uses "Valvulatome"
</answer>

UE Art Examination-Bypass Grafts &amp; other treatments
<answer>
Angioplasty and/or stenting,
atherectomy, or cryoplasty

Grafts provide good inflow, outflow, and adequate conduit of blood flow
</answer>

UE Art Examination-Types of Bypass Grafts
Aortobifemoral graft 
Axillofemoral femerofemoral graft
Femoral-popliteal graft
Popliteal-tibial graft
Femoral-tibial graft

<question>
UE Art Examination-Bypass Grafts Pathology

Acute
</question>
-Pseudoaneurysm @ the anastamosis site
-Surgical distention of vessel @ the anastamosis site unintentional retained valve
-Retained valve can cause blockage &amp; failure of graft due to tubular necrosis

<question>
UE Art Examination-Bypass Grafts Pathology

Chronic
</question>
-Atherosclerosis
-Scar tissue may compress graft &amp; occlude flow
-Pseudoaneurysm
-Intimal Hyperplasia @ anastamosis site

UE Art Examination-Bypass Grafts Testing Method
<answer>
Pt Supine
Use 7-10 MHz linear probe
Observe for aneurysms, thrombus &amp; infection

Obtain color, PW doppler w/ PSV measurements of:
1.Native Art   (inflow art)
2.Art anastamosis
3.Art end of graft
4.Midgraft
5.Venous end of graft
6.Venous anastamosis
7.Native Vn (outflow vn)

1: Low Resistance
2-6: HR (100-200 cm/s) normal
7: ↑ Vol may be pulsatile &amp; risk for clotting
</answer>

UE Art Examination-Bypass Grafts <strong>Normal</strong> Results
PSV betw 100-200 cm/s w/ organized turbulence
Vel tends to be higher in the first 6 mos after placement of graft

UE Art Examination-Bypass Grafts <strong>Abnormal</strong> Results
High grade stenosis w/ PSV &lt;50 cm/s = graft inflow disease
Dampened signal = Proximal to a disease
<span style="background-color:#ffff00;">A 100% ↑ in Vel ff by a distal ↓ in vel =50% DR stenosis</span>

Hemodialysis Grafts
Direct connection between high pressure arterial sys and low pressure venous sys
There are marked anatomic &amp; hemodynamic changes

<question>
Hemodialysis Grafts

Connection between Art/Vns
</question>
<answer>
Dialysis grafts or AVFs are placed in the arm for easy access on dialysis pts &amp; to ↓ infection

<span style="background-color:#ffff00;">BP should NOT be taken at the site of a dialysis fistula; You can on the contralateral side</span>
</answer>

AVF
<answer>
Fistula is a direct connection betw art &amp; vn
<strong>2 types:</strong> Congenital (Mult Channels) &amp; Traumatic
<strong>4 components:</strong> Prox Art, Dist Art, Prox Vn, Dist Vn

<span style="text-decoration:underline;"><strong>Characteristics of Congenital AVF:</strong></span>
BP in the DIST art may be reduced
Fistula ↓ Flow Resistance
Proximal flow is ↑
<strong><span style="text-decoration:underline;">Characteristics of Traumatic AVF:</span>
</strong><span style="background-color:#ff0000;">-Art</span> Resistance Proximal to fistula is ↓ (lots of diastolic flow; ↑ in vol of bl flow in the feeding art)
-Venous Po in draining (proximal) <em><span style="background-color:#0000ff;">Vn </span></em>Flow ↑ (pulsatile)
-Distal Po will be Reduced
-No Collaterals develop
</answer>

AVM
Present @ birth
<span style="text-decoration:underline;">Not</span> a dir connection between art/vns

<question>
Hemodialysis Grafts

3 Main Types
</question>
<answer>
<strong>Looped Synthetic Graft:</strong> BA to Axillary Vn
<strong>Straight Synthetic Graft:</strong> BA to Antecubital Vn
<strong>Brescia-Cimino:</strong> Radial A to Cephalic Vn (300ml/min)

BA: Brachial Art
</answer>

<question>
Hemodialysis Grafts

Clinical Indications
</question>
Prolonged dialysis time (3+ years)
Abnormal lab val (Kidney val: Creatinine/BUN)
Arm Swelling
Digital pain
↑ Venous Po= ↑ Venous Vol
Change in the bruit of the graft

<question>
Hemodialysis Grafts

Complications
</question>
Venous anastamosis site or outflow vn becomes stenotic &amp; thrombus appears due to ↑ volume
Pseudoaneurysm (Ying-yang sign)@ dialysis site
Hematoma
If Art flow is &gt;400 cm/s then graft has 75%DR=96%AR
CHF can develop due to ↑ venous flow return from dialysis graft
Perigraft fluid collections (infection)

4 drawbacks in using analog doppler display
<answer>
Analog Doppler uses a CW tx
Signal is easily affected
Display is less sensitive than spectral analysis
High Vel=Underestimated
Low Vel= Overestimated

<span style="background-color:#ffff00;">*FFT converts Doppler signals to analog waveforms </span>
</answer>

Diff betw low from high resistant flow patterns
<answer>
<strong>Low resistant</strong> has diastolic patterns
Art that carry low resist bl flow are those that provide continuous bl supply in the vascular bed <em>(ie ICA, Renal art, Celiac art, post-prandial SMA)</em>

<strong>High resistant</strong> flow have little or no flow in diastole (more pulsatile in nature)
<em>(ie AO, CFA, PTA, Pre-prandial SMA)</em>
</answer>

Define Vasopressors
<answer>
-Causes vasoconstriction &amp; an "inotrope" ↑ the force of cardiac contraction. Both work
via the Autonomic Nervous System. 
-Pharmacology of Vasopressors &amp; Inotropes:

<span style="text-decoration:underline;"><strong>Adrenaline:</strong></span> the most commonly available
inotrope and is given by IV (in many cases the
most appropriate drug to maintain blood
pressure). 
<span style="text-decoration:underline;"><strong>Dopamine:</strong></span> ↑ mean art Po &amp; cardiac output
<span style="text-decoration:underline;"><strong>Epinephrine</strong> </span>(Epi) administration can
↑ BP in patients who are unresponsive
to traditional agents. It ↑ heart rate &amp; has the potential to induce tachyarrhythmia’s, Ischemia &amp; hypoglycemia.
</answer>

Vasoconstriction
<answer>
↑ in pulsatility in small &amp; med size art
Dilates arterioles to maintain continuity of flow
↑ Po &amp; ↓ in Resistance

Caused by: cold temp, anxiety, certain hormones &amp; drugs, atherosclerosis, caffeine
<em><span style="background-color:#ffff00;">*Peripheral Resistance is controlled by Vasoconstriction &amp; Vasodilatation of the Arterioles</span></em>
</answer>

Vasodilatation
<answer>
↓ in pulsatility in small &amp; medium size art causing in more flow
Widening of the bl vessel

Caused by: temp, hormones &amp; exercises

*Art Obstructive disease &amp; Distal Ischemia causes <span style="background-color:#ffff00;">↑ Vasodilatation</span> &amp; <span style="background-color:#ffff00;">↓ Peripheral Resistance</span>
</answer>

What is Nitroglycerin Transdermal patch?
-Relaxation of the vascular smooth muscle &amp; dilatation of peripheral art &amp; vns. 
-Dilatation of the vns promotes peripheral pooling of bl &amp; ↓ venous ret to the heart,
thereby reducing LT ventricular end-diastolic
pressure and pulmonary capillary wedge
pressure (preload). 
-Nitroglycerin Transdermal Delivery Syst
is a unit designed to provide continuous
controlled release of nitroglycerin through
intact skin.

3 types of high resistant pulsatile signals
<span style="text-decoration:underline;"><strong>Triphasic:</strong></span> FWD, Reverse flow in systole, FWD flow in diastole, no flow @ end of diastole
<span style="text-decoration:underline;"><strong>Biphasic:</strong></span> FWD, Reverse flow in systole and no flow @ end of diastole
<span style="text-decoration:underline;"><strong>Monophasic:</strong></span> FWD flow during systole alone &amp; no flow @ end of diastole

Organic (fixed) Obstructive disease
<strong><span style="text-decoration:underline;">Has abnormal:</span></strong>
Doppler Art signals
Systolic segmental Po
PPG tracings

Functional (Intermittent) obstructive disease
<span style="text-decoration:underline;"><strong>Has normal:</strong></span>
Doppler Art signals
Systolic segmental Po
&amp;/or PPG tracings
Abnormal findings after cold stimulation

Transcutaneous Oximetry
(TcP02) measures the oxygen level of tissue beneath the skin (60-80 mmHg)
-is an indirect measure of blood flow 
-Determines whether healing can occur @ a wound site or @ a specific amputation level

2 Limitations of TcP02
Inability to keep electrode on surface of skin
It can NOT be applied to non-intact skin (ie ulceration)

"Step" in setup process of TcP02
Manual Calibration prior to obtaining a reading at any portion of the extremity

ABDOMINAL- AO
<answer>
ABD AO can be distinguished from
the vena cava by its thicker wall, pulsations,
non-compressible nature, and ability to detect
pulsatile Doppler flow 
<span style="text-decoration:underline;"><strong>PROX AO:</strong></span> Sup to or @ the level of celiac Axis (2.5-3 cm) (Low Resistance Waveform)
<span style="text-decoration:underline;"><strong>MID AO:</strong></span> Below Celiac Axis &amp; above Renal Bif (1.5-2.5 cm)
<span style="text-decoration:underline;"><strong>DIST AO:</strong></span> Just above the bif (1-1.5 cm) (HR)

HR: High Resistance

No vessel course POST to the AO
</answer>

Major branches of ABD AO
<strong>AO Root: </strong>starts @ aortic annulus w/c inc. aortic sinus &amp; valves and ends @ Sinuotubual junction
<strong>Ascending AO:</strong>Starts @ sinotubual junction &amp; ends @ innominate art
<strong>AO Arch:</strong>cont after innominate art ends at the SUBC Art
<strong>Descending AO:</strong>starts at the LT proximal SUBC Art
<strong>Abdominal AO:</strong>starts once it passes thru the diaphragm &amp; ends at the Bif of the Iliacs

4 Visceral Art branches (ABD-AO)
<strong>Celiac Art:</strong>Stomach, spleen, liver, panc, duodenum
↳Lt Gastric Art
↳Splenic Art
↳Hepatic Art
<strong>SMA:</strong> Small Intestine, Cecum, ascending colon, part of TRV colon
<strong>Renal:</strong> Kidneys
<strong>IMA:</strong> Lt 1/2 of TRV colon, descending colon, iliac &amp; sigmoid colon, part of the rectum
<strong>GONADALS:</strong> OV &amp; Testes

2 main branches of the Celiac Art
Hepatic/Splenic Art (both have low resistance)
"Seagull" sign: Hepatic Art/Splenic Art/Celiac Trunk

Aortic Pathology-Ectasia
<answer>
AO does not taper inferiorly
Loss of elasticity may result in tortuous AO
AO is not dilated to the point of aneurysm

Normal: up to 3 cm
Abnormal: &gt;3cm → aneurysmal
</answer>

Aortic Pathology-Atherosclerosis
<answer>
Thickening, hardening &amp; deposition of plaque in the intimal wall

Common sites: Infrarenal
Origin of renal art →<strong> Proximal edge</strong>
Bif of AO into CIA

↑ w/ age, mostly affects men, assoc w/ aneurysm
</answer>

Aortic Pathology- Coarctation of AO
Narrowing of AO due congenital or external compression &amp; may affect Abd AO/Thoracic AO
Assoc w/ hypertension &amp; symptoms of LE ischemia &amp; claudication

Aortic Pathology- Aneurysm
<answer>
-It is often caused by Congenital Art wall weakness and atherosclerosis
-Focal dilation of ART walls involving all 3 layers

<strong><span style="text-decoration:underline;">True</span>-</strong> found in infrarenal, CIA, Circle of Willis
<strong>Fusiform:</strong> diffuse, circumferential, dilation
<strong>Saccular:</strong> localized out-pouching

<strong>Dissecting:</strong> Found in thoracic AO, ABD AO
Small tear in intima allowing bl to form in "blind-pocket" betw 2 layers
<strong>Pseudo-aneurysm:</strong> Defect in main art wall (ie post-catheter insertion or puncture)

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" width="216" height="224" >
</answer>

Aortic Pathology- AAA
-90% of Infrarenal AAA is degenerative
-Abdominal Aortic Aneurysm is the most common reason for ABD vascular exam caused by:
Trauma, smoking, infection, atherosclerosis, congenital weakness or hyperlipidimia
-Normal measurement: 2-3 cm
&gt;5 cm is considered medical/surgical ER
-60% of all aneurysms over 7 cm will rupture w/in a year

Aortic Pathology- AAA Test
-ABD AO is scanned fr the midline to determine the presence or absence of an aneurysm 
-Determines whether an aneurysm is infrarenal or suprarenal &amp; if there is any thrombus or heterogeneous plaque features w/in the dilated lumen.
-Longitudinal View is the preferred plane in measuring AAA

Most frequent complication of Aortic aneurysm &amp; peripheral art aneurysm
<answer>
Rupture is the most frequent complication of Aortic anuerysm
Distal embolization is the most frequent complication of peripheral arterial aneurysm

*Thrombosis can occur w/ either type
AAA's gold standard is <span style="text-decoration:underline;">Ultrasound exam</span>
</answer>

Aortic Pathology-Marfan Syndrome
<answer>
Weakness of the ART wall may result in Aneurysm of AO arch and may lead to Dissection of the AO
Usually found in tall, skinny &amp; white people

Commonly found in Infrarenal / Bif
</answer>

ABDOMINAL AO Duplex Exam
<answer>
Obtain A/P and TRV measurement
Location of aneurysm---Infrarenal, Suprarenal &amp; Bif
Wall thickening s/b &lt;0.08 cm
Look for dissecting vessel "intimal flap" in lumen
Triphasic/Biphasic waveforms (Normal)
High resistance, high Vel, Triphasic flow

<span style="background-color:#ffff00;"><em>*Remember that a diameter &gt;3</em><em>cm is considered to represent abnormal</em></span>
<span style="background-color:#ffff00;"><em>dilatation. </em></span>
</answer>

ABDOMINAL AO Duplex Method
<answer>
Curvilinear prob 3.5-4.5 MHz
Obtain images in Long and TRV of:
Prox AO
Mid AO
Dist AO
R/L CIA's

Use color/PW
</answer>

Evaluation of Abdominal AO
50% DR = 100% ↑ in PSV across adj segments
-Prestenotic to stenotic PSV ratio &gt;4:1 = &gt;75%DR
-PSV &gt;400 cm/s= &gt;75% DR

ABDOMINAL-Renals
Renal Art arise w/in 1.5 cm from SMA laterally off of the AO
RT Renal Art courses POST to the RT Kidney
LT Renal Vn courses ANT to AO but POSt to SMA to enter the IVC &amp; Inferior to LT Renal Art

Renal Image in B-mode
<img data-image_id="b40b5002-60f6-434a-8e81-e73d230dd9a1" 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" width="335" height="270" >

Kidneys perform two essential functions:
1.Removing waste products from the blood and
2. Regulating the water fluid levels. 
Kidney Art are low resistant and there is a
constant vasodilation of the artery branches.
Normal pole to pole length is 10-12 cm.
<span style="background-color:#ffff00;"><em>*Most common anatomic variations of the RA is Mult RA</em></span>

<question>
What two methods are used in
u/s evaluation of renal artery stenosis?
</question>
<answer>
Direct/Indirect 

<span style="text-decoration:underline;"><strong>Direct </strong></span>approach: involves Doppler interrogation along the entire length of the main RA and any accessory RA (RA:renal Art)
Eval Celiac and mesenteric Art

<span style="text-decoration:underline;"><strong>Indirect: </strong></span>involves eval of the segmental or interlobar art w/in the kidney 
This technique infers stenosis of the main RA thru recognition of abnormal waveform shape obtained from the
intrarenal arteries.
</answer>

Renal Doppler waveform analysis, what should the acceleration time be?
-A low resistance waveform with sharp systolic upstroke is expected in the normal main RA
-The systolic upstroke is rapid with an AT of
0.07 seconds or less.
<img data-image_id="3b7a765b-e1e6-4dc3-ad59-a0ed82550a0b" 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" width="308" height="240" >

Renal Duplex
Native kidney is not removed in transplant cases
<em>Lt Renal Vn serves as  the landmark </em>
Use 3.5-5 MHz curved tx
Measure in long &amp; TRV
Obtain color/PW images of:
Segmental art @ the Sup, Mid, Inf poles of the kidney
Get acceleration time measurements
MRA @ hilum →PSV
MRA @ origin near AO →PSV
AO @ the level of kidneys→PSV

RAR formula
<answer>
Renal to Aortic Ratio is used for checking <strong>renal hypertension </strong>
AO stenosis will lead to Renal inflow problem &amp; result in Renovascular Hypertension.
*Maximum RA PSV ÷ Max AO PSV obtained @ the level of the MRA

Normal RAR=&lt;3.5
PSV of MRA = 100-180 cm/s

<span style="text-decoration:underline;">Abnormal:</span>
&gt;60% DR: RAR &gt;3.5  PSV &gt;200 cm/s w/PST
AT &gt;70 m/s (Tardus parvus)= significant stenosis

*If unable to rely on AO PSV (ie AO stenosis), <span style="background-color:#ffff00;">PSV of 180-200 cm/s</span> in Renal Art is another reliable predictor
</answer>

<question>
PR (Parenchymal Resistance Ratio)
RI (Resistive Index)
</question>
<answer>
2 main criteria used to determine if Resistance has ↑ in the kidney &amp;/or Renal art

Resistive Index (RI) indicates Resistance of blood flow in the vessels

RI=PSV-EDV ÷ PSV (normal=&lt;0.75)

PR= End diastolic V ÷ PSV (normal=&gt;0.2)
</answer>

Normal Renal Parenchyma echogenicity
Hypoechoic to the liver or same echogenecity

Renovascular Hypertension (HTN)
-5% of Pts w/ Renal Art Stenosis are assoc w/ HTN
-75% of pts w/ Renovascular HTN is due to Atherosclerosis (found @ PROX RA)
-25% of pts w/ FMD (found MID-DIST RA) It may also be assoc w/ Cerebrovascular disease 
-Other findings in the renal vascular exam incl:
intrinsic renal parenchymal disease, mesenteric stenosis or extrinsic compression, and aneurysm.

Renovascular HTN - Clinical Indications
HTN (new onset or uncontrollable) 
Follow-up post PTA/stenting 
Follow-up bypass grafting
Follow-up renal allograft

Renovascular HTN - Clinical Exam
Duplex/color scanning is utilized to eval renal artery &amp; kidney parenchymal bl flow for
<em><span style="text-decoration:underline;">hemodynamically significant renal art stenosis <strong>(&gt;60%)</strong> and occlusions. </span></em>
Examination of the Abd AO &amp; the origins of the celiac and superior mesenteric art are
routinely incl.

Renal Art Occlusion or Infarction
May be the result of thrombus/emboli
If MRA (main renal art) is affected, entire kidney is affected
Branches of MRA: Segmental art, Interlobar art, Arcuate art

Renal Art Stenosis Image
<img data-image_id="c0c19167-154d-45cf-bb68-f890464efc0f" 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" 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Renal Art Stenosis
May be caused by plaque or fibromuscular hyperplasia or Renal hypertension

Renal Stenosis treatments
Bypass graft
Angioplasty:ballooning of art wall
Stent

Renal Vein Thrombosis
Can cause obstruction to the drainage

Renal Art Aneurysm
Infra (BELOW) renal aneurysms

Renal Transplants
Donor Art is anastamosed to either the External/Internal Iliac Art 
Internal Iliac Art aka Hypogastric art
Renal V is → EIV
Renal transplants are usually located in the RT Iliac fossa
Low Resistance flow pattern

Causes of ↑ Resistance in a Renal Art Transplant
Acute Rejection
Renal Vn thrombosis
Infection
Tubular necrosis
AVF
perinephric fluid accumulations &amp;
hydronephrosis

Stenosis in RENAL transplants usually occur @
Connection sites
Distal donor art
Recepient art

Signs of Acute Rejection in Renal Transplants
<answer>
Abnormal texture of kidney w/ ↑ cortical echogenecity

Abnormal size &gt;13cm
Hypoechoic area w/in the kidney (signs of failure)
</answer>

Signs of Chronic Rejection in Renal Transplants
Smaller size kidney &lt;9cm
↑ in RI (Resistive Index)

Normal/Abnormal measurements of Kidney transplants
<answer>
Normal Arcuate Art Resistance: 0.6-0.8 cm
Abnormal: &gt;0.9 cm

Normal PSV: ≤180 cm/s
Abnormal: &gt;180 cm/s indicates Stenosis
</answer>

Abdominal- Mesenteric Ischemia
<answer>
SMA found 1 cm distal to Celiac Axis

Deficiency of bl being sent to the Intestines

Symptoms: Dull, crampy pain 15-20 mins after meal
</answer>

Normal Results in Mesenteric Ischemia
Pre-prandial→ High Resistance w/ RI= 0.75
Post prandial→Low Resistance w/ RI= 0.6
PSV &lt;275 cm/s

Abnormal Results in Mesenteric Ischemia
<answer>
SMA Abnormal: PSV ≥275 cm/s(fasting) = ≥70-99%DR
High Resistance waveform

If SMA is occluded, Inferior Mesenteric (IMA) may become collateral, dilated, prominent, indicating disease (occlusion, ischemia) of SMA
</answer>

Celiac Axis Compression Syndrome (CACS)
<answer>
Median Arcuate Ligament of the diaphragm compresses the celiac axis during exhalation

Normal: Low Resistance waveform

Abnormal: High Resistance waveform w/ PSV ≥ 200 cm/s = ≥70-99% DR indicating ↑ velocity and turbulence

<span style="background-color:#ffff00;">*Observe for post-stenotic turbulence</span>
</answer>

ABDOMINAL-Portal System
Incl Hepatic Art, PV, Splenic Vn
Liver has 2 sources of bl:
 1. Hepatic Art=brings oxygenated bl → 25% 
 2. Portal Vn (echogenic walls)=nutrient rich bl → 75%
Bl is drained fr liver by 3 HV (dark walls) that enter the IVC just below the diaphragm (R/M/L HV)
HA gives rise to the GDA (gastroduodenal art), RT Gastric art &amp; Supraduodenal art

ABDOMINAL- Portal Hypertension
-Elevated venous Po in portal sys due to obstruction to bl flow
-Po becomes too high, the blood backs
up and finds other ways to flow back to the
heart, where it is pumped to the lungs, where
it gets rid of waste products and picks up
oxygen 
-bl can travel to the vns in the esophagus (esophageal varices), in the skin of the abdomen &amp; the vns of the rectum
&amp; anus (hemorrhoids) to get around the
blockages in the liver. 
-Usually related to advanced chronic liver disease called Cirrhosis
-Severely elevated Po w/in liver may result in reversed flow (hepato-fugal) in portal vn &amp; ↑ flow in hepatic art

Portal Hypertension-Varices
Enlarged coronary vn
Subcapsular varices
Esophageal varices
Hemorrhoids
Patent Umbilical Vn (Caput Medussa)
Splenic Varices (Pleural Effusion)
Generalized Ascites

Portal Hypertension-Cirrhosis
-Results fr scarring of a liver injury caused by hepatitis, alcohol abuse, or other
causes of liver damage. 
-Scar tissue blocks the flow of bl through the liver.

Portal Hypertension-Pre Hepatic causes
Any ↑ in portal bl flow caused by:
PV thrombosis
Splenic V thrombosis
Compression of PV due to lymph node
Pancreatitis
Splenomegaly

Portal Vn Thrombosis in PTH (USA)
Absence of flow on color doppler
Dilated PV w/ internal echoes
Make sure vel scale ↓ to detect slow flow

Causes of Portal Vn Thrombosis
Can be caused by:
Inflammatory process, Portal Hypertension, Post Surgicalcomplications, Pregnancy, Contraceptives, Smoking, Tumors, Idiopathic (dont know)

Portal Hypertension-Intra Hepatic causes
↓ in capacity of liver to transmit bl to IVC causes incl:
Fatty liver
Cirrhosis of the liver
Parasitic infections called Shistosomiasis
METS

Portal Hypertension-Post Hepatic causes
Budd Chiari Syndrome-Obst of HV
Cardiac abnormalities
Tumor in IVC (clot or compression)

Budd Chiari Syndrome in PTH (USA)
Non-visualization of flow in HV or IVC
Echogenic intraluminal thrombus
Flat continuous flow in PROX HV

Portal Hypertension- Treatment
Transjugular Intrahepatic Portosystemic Shunt (TIPSS) procedure
Under Fluoroscopic guidance, radiologist threads a catheter fr RT IJV to IVC → RT HV
Bridge is percutaneously created in the PV"
Bridge" (tract) is stented using metallic endoprosthesis
Shunting bl fr PV → HV decompresses the PV sys

TIPS Evaluation-Normal
Color fill in lumen
Meas Vel in main PV, (P/M/D) shunt, IVC or draining Vn
↑ Vel/pulsatile flow in PV, HA
PSV= 125-200 cm/s 
Hepatopetal flow in MPV, Reversed flow in RPV, LPV

TIPS Evaluation-Abnormal
Stenosis/occlusion in the shunt usually @ the hepatic end
Absent flow
Hepatofugal flow in PV &amp; HA
PSV &lt;50 cm/s
PV &gt;13 mm in quiet respiration
Loss of Resp variation

Portal Hypertension-USA
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" >

Post surgical complications in a Liver Transplant
-Hepatic artery occlusion and infarct, portal vein and IVC thrombosis 
-RT HA shows a typical tardus parvus waveform=PROXIMAL disease (ART thrombosis or severe stenosis)
-Occlusion at the hepatic arterial anastomosis
is present

<img data-image_id="b4690f21-f89f-4d27-a081-812936e59d0c" 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" width="266" height="176" >
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" width="266" height="177" >

<question>
HV in USA-NORMAL

<img data-image_id="7b69fae9-5282-470f-8972-2d950554839f" 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" >
</question>
Dark walls
Hepatofugal flow (away)
<span style="text-decoration:underline;"><em>Phasic, Bi-dir/pulsatile</em></span> flow due to pulsations from the heart 
Same flow is seen in IVC

Hepatic Veins Evaluation-Abnormal
Cant see HV due to bl clot/tumor w/in lumen
Atrophy of RT lobe &amp; hypertrophy of Caudate lobe
Monophasic waveform (in case of cirrhosis)

<question>
Portal Vn USA-NORMAL
<img data-image_id="33fbc9dd-19f8-431e-a62e-cb390bb0b311" 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" width="303" height="216" >
</question>
Echogenic walls
Hepatopetal flow (towards)
<span style="text-decoration:underline;"><em>Phasic w/ respiration </em></span>consistent w/ Splenic &amp; mesenteric vns
Size is up to &lt;1.3 cm or &lt;13 mm

Portal Vein Evaluation-Abnormal
MPV size &gt;1.3 cm
Hepatofugal flow
Patent umbilical vn/Ligamentum Teres (LT)
Tumor/bl clot w/in the vessel

Hepatic Arteries Evaluation
<strong>Normal:</strong> Low Resistance, pulsatile flow
<strong>Abnormal:</strong> ↓ flow or absent flow after liver transplant indicates obstruction of HA

<question>
AO 
<img data-image_id="af8d4df8-4b21-4a4d-b229-b2d90f67c169" 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" width="207" height="173" >
</question>
AO: Never touches the liver
Has thicker/ stronger medial layer
Triphasic, pulsatile/ high vel plug flow
Tapers inferiorly
<img data-image_id="cd0a0932-f7bf-426d-9765-bb5fb97c2b67" 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" 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<question>
IVC
<img data-image_id="0f4e783b-9dd7-47f2-94b7-707afff45822" 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" width="238" height="163" >
</question>
Wraps around the left lobe of liver
Thinner walls
Steady flow that changes w/ respiration
Gets bigger in diameter closer to the heart

Arteries used for mapping
<answer>
1. Superior epigastric art it is the terminal branc of the → Internal mammary art aka Internal Thoracic Art.  It is mapped to identify location &amp; patency

2. Deep Inf epigastric art → External Iliac art 
Anastomostic region is known as "watershed area"
Both arteries incl. perforators contribute bl supply to <em>Rectus Abdomnis muscle</em>
Main reason for mapping is TRAM flap used for breast reconstruction after mastectomy and also as a graft to the Lt Ant descending (LAD) coronary art

3.Radial Art used for bypass graft in coronary art
</answer>

Internal Mammary Art
Aka Internal Thoracic Art
The use of the left internal mammary artery (LIMA) to bypass the left anterior descending artery (LAD) is the “gold standard” of coronary artery revascularization

Observations in Preoperative Vein mapping
Veins are mapped with duplex imaging to
determine suitability to use as a bypass
conduit. 
<strong>Check for:</strong> 
Normal vn wall compressibility
Absence of wall thickness
Patency throughout an acceptable length of vn
&gt;2mm in diameter (TRV approach)

Veins often used in mapping
<answer>
GSV
Cephalic Vn
Basilic Vn
less often, Lesser Saphenous Vn

<span style="background-color:#ffff00;">*Once determined suitable, vns are used as a bypass graft for extremity or coronary &amp; for use in dialysis access</span>
</answer>

Angiogrpahic studies (filling defect)
<answer>
Defect in the area that would normally fill with
contrast medium in an X-ray or MRI
examination 
Filling defects=presence, location &amp; extent of disease

A defect in the contour part of the
GI tract, as seen by x-ray after
contrast medium has been introduced may indicate presence of a tumor or foreign
body
</answer>

Complications after angiographic procedure
Puncture site hematoma
Pseudoaneurysm
Local Art occlusion
Neurologic complications

2 endovascular procedures
Angioplasty (PTA)
STENT

ANGIOPLASTY (PTA) procedure
<answer>
-Percutaneous Transluminal Angioplasty (PTA)
-Balloon tipped catheter is brought to region of stenosis, its slowly inflated (dilating lumen)
-Expanding the balloon compresses the plaque against the art wall &amp; reduces the blockage 
-Balloon is deflated, catheter removed
-<span style="text-decoration:underline;">"Kissing Stent"</span> angioplasty/Stent technique is used for Bifurcations

-Performed in art (renal, iliac, femoral, POP)
</answer>

Angioplasty Site Stenosis Criteria
<img data-image_id="beb3e93b-356d-47fb-bd94-5fac24d1051a" 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" 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STENT Procedure
<answer>
(Types of Stent: balloon expandable, self-expanding; stent grafts used in larger art)

Stents help prevent the art fr. becoming narrowed or blocked again in the mos/yrs after angioplasty
It is placed in a weakened art to
improve bl flow &amp; to help prevent the art fr bursting 
Made of metal mesh
Similar techniques as in angiography utilized to insert stent
</answer>

Peripheral Stent Criteria
<img data-image_id="9d141eab-4123-4221-8fab-89ccec5535b3" 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" width="314" height="164" >

Extracranial &amp; Intracranial Segments of ICA
EXTRA: Cervical
INTRA: Petrous, Cavernous Siphon (Carotid Siphon), Supraclinoid → ICA terminates into ACA/MCA

Branches of Ophthalmic Art
Central Retinal Art
Supra Orbital Art
Frontal Art

Major branch of ICA
<answer>
Ophthalmic art coming off Carotid Siphon (Cavernous Siphon)
Curvature of Carotid Siphon makes it susceptible to the formation of a flow-reducing lesion

<span style="background-color:#ffff00;">Supplies the Ant portion of the brain</span>
</answer>

Branches of ECA
<answer>
<strong>S</strong>uperior Thyroid Art
<strong>A</strong>scending Pharyngeal Art
<strong>L</strong>ingual Art
<strong>F</strong>acial Art →Angular Art
<strong>O</strong>ccipital Art
<strong>P</strong>osterior Auricular Art
<strong>M</strong>axillary Art
<strong>S</strong>uperficial Temporal Art

<span style="background-color:#ffff00;">Supplies the neck, face &amp; scalp

Bl flow in ECA is cephalad (toward head); flow in Superior Thyroid is caudal (toward tail)</span>
</answer>

Vascular bed supply of ICA/ECA
<answer>
<span style="text-decoration:underline;"><strong>Low Resistance:</strong></span> Constant supply of bl flow during systole &amp; diastole.  Normally seen in vessels feeding organs<em><em> (ICA, Vert, celiac, hepatic, post prandial SMA, renal art)
&gt;80% of bl fr CCA flows → ICA</em></em>

<span style="text-decoration:underline;"><strong>High</strong><strong> Resistance:</strong></span><strong> </strong>Does NOT require a constant supply of bl flow <em>(ECA, pre-prandial SMA, peripheral art)

<span style="background-color:#ffff00;">*BL FLOW FR HIGH TO LOW</span></em>
</answer>

ICA characteristics in B-Mode &amp; Doppler flow
<answer>
<span style="text-decoration:underline;"><strong>B-mode:</strong> </span>
More PosteroLateral
Usually larger
No branches in neck
Prominent dilatation @ take off

<strong><span style="text-decoration:underline;">Doppler flow:</span>
</strong>More continuous flow
Low-resistance signal (↑ flow in diastole)
Absent-to-very little response in Temp Art tapping
</answer>

ECA characteristics in B-Mode &amp; Doppler flow
<answer>
<span style="text-decoration:underline;"><strong>B-mode: </strong></span>
More medial
Usually smaller
Branches evident

<span style="text-decoration:underline;"><strong>Doppler flow:</strong></span>
More pulsatile flow
High-resistance signal (↓ flow in diastole)
Oscillates w/ Temp art tapping
</answer>

Factors that may cause poor visualization of ECA on duplex imaging
Presence of dressings, skin staples or sutures
Edema or hematoma
Abnormal size or contour of neck
Depth or course of the vessel
Acoustic shadowing fr Ca++
Inadequate optimization of machine controls

Holenhurst Plaque
-Bright yellow spot w/in an Art Branch in Ophthalmologic exam
-Pts have a 75% risk of TIA w/ this incident

Origin &amp; termination of Vert Art
Vert Art branch off the Subc Art
It unites after entering the skull fr Basilar Art
RT Vert art is usually smaller than LT Vert art

2 Circulatory systems for the brain
<span style="text-decoration:underline;"><strong>Ant system:</strong></span> Consists of carotid art &amp; their branches
<span style="text-decoration:underline;"><strong>Post system:</strong></span> Consists of Vert &amp; Basilar art &amp; their branches
<em>Circle of Willis</em> is the most important intracranial comm. channel that connects the 2 systems

Circle of Willis
It receives its blood supply from the Carotid &amp; Vert Art
Ant Cerebral Art
Middle Cerebral Art
Post Cerebral Art
Basilar Art
Distal ICA
Ant. Comm. Art
Post Comm. Art

Describe Hemispheric or Lateralizing symptoms
<answer>
Brain is divided in 2 halves or hemispheres, one on either side of midline
<strong>LT Hemi</strong>=Dominant &amp; controls speech
<strong>RT Hemi</strong>=Controls LT side of body

<span style="background-color:#ffff00;">Hemispheric stroke affects MCA distally &amp; contralateral side of body</span>

*A pt presenting w/ aphasia &amp; weakness of RT arm &amp; leg may be due to LT hemispheric infarct.  The term Lateralizing symptoms may also be used instead of Hemispheric symptoms.
</answer>

Vessels of Ant Circulation
Intracranial: ACA &amp; MCA
Extracranial: CCA, ECA, ICA

Symptoms of Ant Circulation insufficiency in Cerebrovascular
Unilateral effects on the body
Hemiparesis: 1 sided weakness
Hemiparesthesia: prickling or tingling of the skin
Aphasia
Behavior changes
Peripheral vision loss
Amaurosis Fugaux

Symptoms presented with a diseased ICA
<strong>Hemiparesis</strong>
<strong>Amaurosis Fugax</strong>
<strong>Aphasia</strong>
<em>*Stenosis of the ICA has the highest risk of TIA</em>
Either paresis &amp;/or paresthesia may be on the contralateral side of the lesion

Amaurosis Fugax
Temp partial or total blindness
"shade coming down over the involved eye"
Affects the same or ipsilateral side of the lesion

Aphasia/Dysphasia
<answer>
Absence of speech/garbled speech
May be present if dominant hemisphere is affected

*Since most people are RT-handed, it is suggestive of a LT Hemispheric infarct
</answer>

Symptoms assoc w/ a lesion in Middle Cerebral art
Aphasia
More severe hemiparesis or hemiplegia (one-side) of face &amp; arm than of the leg
Behavioral changes

Homonymous Hemianopia
Disrupts vision in 1/2 the visual field of both eyes
Obstruction of MCA branch

Symptoms assoc. with Lesion in the Ant Cerebral Art (ACA)
Severe leg hemiparesis or hemiplegia
Incontinence &amp; loss of coordination

Vessels of Post Circulation
Intracranial: PCA &amp; Basilar Art
Extracranial: Vert Art

Symptoms of Post Circulation insufficiency in Cerebrovascular
Bilateral effects on the body
Bilat Paresthesia
Bilat Paresis
Vertigo (loss of bal)
Diplopia (double vision)
Drop attack
Ataxia (loss of muscle coord)
Dysphagia (difficulty swallowing)
Horner Syndrome (Ptosis) drooping of upper eyelid

Symptoms assoc w/bl flow alterations to Post circulation or Vertebrobasilar system
Nonlocalizing or nonlateralizing sysmptoms not related to either RT or LT hemispheres of the brain:
Dizziness
Syncope (transient loss of consciousness)
Dysarthia (disturbance of speech)
Severe headache

RIND
Reversible Ischmeic Neurologic Deficit 
Completely resolves after 24 hrs
Opposite of RIND is CVA

2 main classifications of Cerebrovascular disease
<answer>
<span style="text-decoration:underline;">TIA (Transient Ischemic Attack):</span> Neurological deficit w/ symptoms lasting <span style="background-color:#ffff00;">&lt;24 hrs 
</span>"<em>Mini stroke</em>" but Temporary (Transient)
<strong>Affects the side of the body opposite that of the Ischemic hemisphere</strong>

<span style="text-decoration:underline;">CVA (Cerebrovascular Accident):</span> Stroke with Neurological deficit w/ symptoms lasting<span style="background-color:#00ffff;"> &gt;24 hrs</span>
</answer>

Cerebrovascular disease-TIA Warning signs
<answer>
<span style="text-decoration:underline;"><strong>Sudden:</strong></span> 
-numbness or weakness of the face, arm or leg, especially on one side of the body
-confusion, trouble speaking or understanding 
-trouble seeing in one or both eyes 
-trouble walking, dizziness, loss of balance or coordination 
-severe headache with no known cause

<strong>rtPA:</strong> most common medical treatment of acute ischemic stroke
</answer>

Cerebrovascular disease-CVA
Sudden death of some brain cells due to lack of oxygen when the blood flow to the brain is
impaired by blockage or rupture of an artery to the brain.

2 most common causes for CVA
Atheromatous plaque
Thromboembolic diseases

Atherosclerosis
Affects primarily the intima &amp; may extend to media
In Cerebrovascular system, occurs commonly in origin of ICA
Diabetes is a risk factor
In LE circulation, Hunter's canal or adductor hiatus is the most common site

Atheromatous plaque
Accumulation of lipid-containing material, smooth muscle cells, collagen, fibrin &amp; platelets
Causes thickening, hardening &amp; loss of elasticity of art walls that form w/in &amp; beneath intima

Thromboembolic diseases
Leading cause of morbidity and mortality worldwide
Caused when a blood vessel is obstructed by a blood clot (embolus) that has been carried in the bloodstream from the site of its formation
Incl. both venous thromboembolism (VTE)
and arterial thrombosis

Venous Thromboembolism (VTE)
Is a general term w/c refers to mainly 2 conditions: DVT and its potentially fatal acute complication, pulmonary embolism (PE).

Arterial Embolism
Is a frequent complication in pts with atrial fibrillation (AF) (irreg/very fast heart rate, ie palpitations) and can lead to stroke or systemic embolism.

Types of Non-atherosclerotic disease evaluated by carotid duplex exam
Aneurysm
Dissection
Fibromuscular Dysplasia (FMD)
Carotid Body Tumor (CBT)
Neointimal Hyperplasia

Carotid Dissection
Causes tearing injury to AO/Art (ie Car accident)
Causes RT side weakness &amp; aphasia

Arterial Dissection
<span style="text-decoration:underline;">Abnormal</span>, and usually <span style="text-decoration:underline;">abrupt</span>, <span style="text-decoration:underline;">formation</span> of a <span style="text-decoration:underline;">tear</span> along the <span style="text-decoration:underline;">inside wall of an art</span>
As the tear becomes larger,  it  forms  a small pouch  called  a  <span style="background-color:#ffff00;">“false  lumen.”</span>  The  blood that  accumulates  inside  this  false lumen can lead to a stroke

Pseudo aneurysm in Art Dissection
Growing pool of blood in the wall of the
artery  is  known  as  a  “pseudo  aneurysm.” Pseudo aneurysms can lead to symptoms of
stroke by pressing on brain structures located
nearby
They can also burst and cause major
bleeding into the brain (hemorrhagic strokes)
When this occurs, it is referred to as “dissecting pseudo aneurysm.”

Art-to-art thromboembolism
Bl inside the false lumen can clot and extend
slowly into the area where bl normally
flows. 
Small pieces fr the growing bl clot can break off, flow upstream &amp; become trapped inside a
smaller art in the brain

FMD
An abnormal fibrous tissue develops along medial layer w/ overgrowth of collagen
Usually seen in carotid or renal art in young women
Affects the mid to distal aspect of the Renal Art
Bead-like or string of pearls appearance

CBT
Highly vascular
Develops above carotid bif betw ICA &amp; ECA 
Usually fed by ECA

Neointimal Hyperplasia
Intimal thickening fr overproduction of smooth muscle cells
Usually seen in vascular injury/reconstruction (post carotid endarterectomy)

Waveform characteristics of a diseased Proximal ICA
<answer>
Sharp upstroke/Short AT not consistent w/Proximal disease
Low flow in diastole=blood going into a high resistance vascular bed

Findings: Pre-occlusive/occlusive lesion is distal (carotid siphon, termination of ICA → Middle &amp; Ant Cerebral art)

<span style="background-color:#ffff00;">*Pattern of bl flow in systole and diastole tells you where bl is coming from</span>

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width="463" height="356" >
</answer>

Characteristics of flow patterns
Look at all info available by duplex (spectral analysis), B-mode &amp; color flow doppler before determining significance of flow
Comparing findings Bi-lat is also critical

Factors that may produce ↑ flow other than a stenosis (overestimation)
↑ Cardiac output
Tortuosity of the vessel
Collateralizing for ipsi/contra lateral disease
Inappropriate doppler angle (ie &gt;60<sup>0</sup>)

Factors that may be inconsistent betw Doppler &amp; B-mode finding
Low cardiac output
↑ flow vel NOT detected
Long, smooth plaque formation
Stenosis @ area of dilatation (ie carotid bulb)
Inappropriate doppler angle

Diff types of art wall irreg in B-mode imaging
Fatty streaks
Fibrous (soft) plaque
Complex plaque
Ca++
Thrombus
Surface characteristics

Fatty streaks
Hypoechoic &amp; homogenous (low-level echoes of similar appearance)

Fibrous plaque
Low, medium &amp; high level echoes that have heterogeneous (non-uniform) appearance

Ca++
Bright, highly reflective echoes
Acoustic shadowing fr Ca+ deposit

Thrombus
Same echogenicity as flowing bl
Bl clot

Hematoma
aka Bruise

Occlusion
<answer>
Blockage

<span style="background-color:#ffff00;">*Occluded vessels do NOT produce a Bruit</span>
</answer>

Stenosis
Narrowing of a vessel

Stenosis profile characteristics
<strong>Pre-stenosis:</strong> Flow may or may not be altered. HIGH Resistance, LOW Diastole=Dist Disease
<strong>@ Stenosis:</strong> High Vel or F; spectral broadening; loss of spectral or F window
<strong>Distal to stenosis:</strong> Low flow, Low vel 
Tardus Parvus waveform=dampened signal indicating Proximal to disease.  Post stenotic Turbulence

Stenosis criteria table
<img data-image_id="e9f8730a-8e36-4f57-9413-cb4249660da5" 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" width="480" height="264" >

Tardus Parvus characteristics
<answer>
Low flow vel in systole &amp; diastole=abnormal flow
Almost continuous flow throughout the cardiac cycle suggests its going to a low resistance vascular bed
Slow acceleration time (AT)=Proximal high grade stenosis/occlusion

Dampened signal=proximal disease
<img data-image_id="bbac9759-79f5-4353-b70a-28ff58afe8e8" 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" >
</answer>

Aliasing
Frequencies exceeding Nyquist limit cannot be accurately displayed.  <span style="background-color:#ffff00;">Nyq=1/2 PRF</span>
<span style="text-decoration:underline;">Can be eliminated by:</span>
Incr Scale
Decr F
Lower baseline
Switch to CW
Change view to decr vessel depth (SV)

TCD Study characteristics
<answer>
Uses <strong>2 MHz Pulsed doppler</strong> w/ spectral analysis
It uses a non-invasive modality for imaging bl flow in cerebral art and vns 
Exam requires Sample Vol @ varying depths
<strong>0 angle of insonation in TCI</strong>
Used to eval Intracranial stenosis, Occlusion, vasospasm or collateralization
Sound waves transmitted through these
windows are reflected by bl cells in the
intracranial vasculature. 
The <span style="text-decoration:underline;">frequency shift of the reflected sound waves recorded at the</span>
<span style="text-decoration:underline;">probe</span> is used to <span style="text-decoration:underline;">estimate bl flow vel or flow vol</span>
<strong>Acoustic windows utilized:</strong> Transtemporal, transorbital, and tranforaminal windows.
Submandibular may also be used to eval extradural ICA
Technique measures <em>Time Averaged Maximum Vel</em> (TAMV) <strong><em>not</em></strong> PSV or EDV

<img data-image_id="4e8a1cd5-6695-48a5-9da9-98a0e35a03ce" 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" 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Purpose of TCD (non-imaging)
Identify IC (Intracranial) emboli and assess
vasomotor reactivity
Diagnosis and management of IC occlusive disease. 
Eval effects of extracranial stenosis on intracranial hemodynamics 
Identification and monitoring of vasospasm ff subarachnoid hemorrhage.

Common indications for performance of a TCD?
Evaluation of IC flow ff:
-head trauma
-during surg to incl emboli detection and
documentation of intraoperative and
postoperative hemodynamic changes
-Assessment of vasomotor reactivity for
specific indications 
-Identification of IC vasculopathy in pts w/ Sickle Cell Anemia
-Quantification of degree of IC stenosis (&gt;65%) in the major basal cerebral art
-Monitor flow patterns w/in AVM &amp; identify the vascular supply to these malformations  
-Assess the vertebrobasilar (POST) circulation so that collateral pathways &amp; pathology can be identified.

Guidelines for ID of TCD
<answer>
V      Window  Depth     Dir     Vel       Angle
                     (mm)            (cm/s)
MCA     TT     30-60    Ante  55+/-12 Ant/Sup

Terminal
ICA      TT     55-65    BI     55+/-12    same

ACA     TT     60-80   Retro  50+/-11   same
PCA     TT     60-70   Ante   39+/-10   same
ICA     TO     60-80  Varies  47+/-14   varies
Opht   TO     40-60  Ante    21+/-5    Medial
VA      TF     60-90  Retro   38+/-10   R/L mid
BA      TF     80-120 same  41+/-10    Midline
</answer>

3 Pathways for Intracranial collateralization
Cross-over
External-to-internal 
Post-to-Ant

Cross-over collateralization
<answer>
Antegrade flow is evident in ACA.  
Flow is crossing over from the contralateral ACA via a patent Ant Comm Art

ACA: Ant Cerebral Art
</answer>

External-to-Internal collateralization
Retrograde flow seen in Ophthalmic Art
Flow results fr ECA to ICA collateralization → distal branches of Superficial Temp Art that connect w/ dist branches of Ophthalmic art
Intracranial flow is via Ipsilat Ophthalmic art

Post-to-Ant collateralization
<answer>
↑ flow vel found in PCA
Ant circulation is via Post Comm Art

PCA: Post Cerebral Art
</answer>

Diagnosis of Vasospasm fr a subarachnoid hemorrhage
<answer>
Requires serial recordings to monitor alterations in mean vel over time
*TCD most accurate when evaluating spasms of MCA (middle cerebral art)
MCA &gt;120 cm/s consistent w/ Vasospasm

Hemispheric Index (HI) &gt;3=vasospasm
HI=MCA vel ÷ distal extracranial ICA vel
</answer>

Innominate Art Occlusion
↓ Po on the Rt side

Angina
Chest pain, sometimes w/ radiation to jaw &amp; or arm

Temporal Arteritis
Inflammation of the Temp art
May produce severe headaches &amp;/or sudden unilat blindness
Type of Giant Cell arteritis 
Affects frontal &amp;/or parietal branches of Superficial Temp Art

Diagnosis of Temporal Arteritis
-Thickened intimal structures evident on B-mode
-PSV being doubled of 58+/-9 cm/s due to intimal thickening
-Halo anechoic area around art wall from edema of the intima

Diameter Reduction formula
<answer>
DR=[1- d÷D] x 100

d=Residual Lumen
D=True Lumen

50%DR = 75%AR
</answer>

MRA method
-MRA is often used to evaluate the
art of the neck &amp; brain, the thoracic and
abdominal aorta, the renal arteries, and the
legs
-Radio f energy &amp; strong magnetic field produce multi-plane images
-Able to quantitate bl flow
-Non-Ionizing radiation
-CT &amp; MRA may be used for better
indication when presence of a univocal US
study, identify aneurysms and hemorrhage. 
-Sensitive to presence of stenosis but overestimate the disease process
-Presence of metal precludes imaging
-Requires great skill

CT Method
Special kind of X-ray machine
Ionizing radiation used to obtain cross-sectional images
Evaluates nature of cerebral infarctions &amp; intracranial aneurysms, hemorrhage &amp; AVM's
Degraded image by pt motion &amp; presence of metallic surgical clips
Only one plane

Treatment options to Pts w/ disease of Extracranial carotid art
Categories are: 
Medical
Surgical
Endovascular

Medical treatment to pts w/ disease of Extracranial carotid art
Life style modifications such as:
Stop smoking, Wt control &amp; low cholesterol diet
Aspirin may be prescribed to ↓ thrombolic activity

Surgical treatment to pts w/ disease of Extracranial carotid art
-Endarterectomy, is a removal of the atherosclerotic material
-Your physician may recommend endarterectomy to treat one or more of the following: 
Carotid art disease
Peripheral arterial disease, such as leg or arm art disease
 Renal (kidney) art disease
Aortic arch conditions 
Aortoiliac occlusive disease
 Visceral (intestines, spleen and liver) art disease.

Endovascular treatment to pts w/ disease of Extracranial carotid art
Stenting continues to be an emerging technology w/ extensive clinical investigation continuing

Bl flow from Deep vns of the toes to the RT atrium
1. Confluence of venules of the deep digital vns →Metatarsal vns
2. Metatarsal vns →Deep venous arches = Tibial Vns
3. Paired PTV + Paired Pero Vns drain →Tibioperoneal trunk 
4. ANT Tibial + TibioPeroneal trunk and LSV = Pop V
5. Pop V becomes Superficial Femoral Vn @ the Adductor hiatus (distal thigh)
6. SFV becomes CFV w/c is medial to the CFA and is formed by the confluence of the SFV, DFV &amp; GSV below the Inguinal Lig
7. CFV becomes EIV above Inguinal Lig
8. EIV unites w/ the IIV (Internal Iliac Vn) to form the Common Iliac Vn (CIV) 
9. CIV's join to form IVC @ the level of the 5th lumbar vertebra to the RT atrium

Deep Vns include:
CFV
SFV
DFV
POP VN
Paired ATV's
Paired PTV's
Paired Peroneal Vns

Lower Extremity Anatomy
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" width="472" height="660" >

2 main Superficial Vns of the lower extremities
1. Small Saphenous Vn
2. Great Saphenous Vn (GSV)

Small Saphenous Vn
Located Post to Lateral malleolus and ascends the Post surf of the calf
It joins the Pop V @ or near Pop crease or fossa
Its confluence w/ the deep sys varies and may occur anywhere fr the Pop fossa → Post thigh

Great Saphenous Vn (GSV)
-Longest Vn in body
-Originates on dorsum of foot Ant to Medial Malleolus
-Ascends medially ff the tibia bone &amp; along medial surface of the thigh
-Ends in the groin @ the Saphenofemoral junction (CFV)
-A normal GSV meas. 3-4 mm (0.3-0.4cm) in the mid- thigh. When reflux is present, it is usually larger, but there is NO dir. association betw the size of the GSV and the severity of the disease.

Perforators
<answer>
-As bl flow moves proximally → heart it goes fr the Superficial sys → Deep sys via the Perf  
-Perforator vns have one-way valves designed
to prevent backflow of blood towards the
superficial veins. 
-When those valves no longer function properly, <span style="text-decoration:underline;">reflux occurs</span>, and can
enlarge the perforators and the superficial
veins they lead to 

<span style="background-color:#ffff00;">aka: Communicating Vns</span>
</answer>

Important Perforators in the leg
Hunters → Medial aspect of leg
Dobbs → Above the knee
Boyds → Behind the knee
Cockett's → Calf (1,2,3)
LSV has lateral perf branches

3 major perforating Vns in the lower extremity
<strong>PTV's</strong> have 2 important perforators near medial malleolus.  
<strong>Post comm branch of GSV</strong> in the medial lower calf is connected to a 3rd perforator
<strong>Post arch vn</strong> provides superficial connection to 3 perforating vns @ the ankle level w/c are important in the development of venous stasis ulcers (Cockett perforators)

Causes of Incompetent Perforators
-Perforator veins in the lower leg and ankle are particularly vulnerable to distention and incompetence, and the
-Resultant circulatory problems create an
increased likelihood of <span style="text-decoration:underline;">edema</span>, <span style="text-decoration:underline;">skin</span>
<span style="text-decoration:underline;">discoloration</span>, <span style="text-decoration:underline;">dermatitis</span> and<span style="text-decoration:underline;"> skin ulcers</span> in the
immediate area. 
-Like primary superficial veins that become incompetent, perforator veins
can be treated.

Venous sinuses of lower extremities (Soleal Sinus)
<answer>
-Dilated vessels in the soleal &amp; gastrocnemius muscle of the calf w/c serves as "Reservoir" for venous bl
-Gastrocnemial Vns drain→POP VN
-Soleal Vns drain→PTV &amp; PERO VNS

<span style="background-color:#ffff00;">-SOLEAL Sinus is the #1 location for DVT</span>
</answer>

Calf Muscle Pump
aka Soleus pump is An action of the calf (soleus) muscles in w/c the muscles contract and squeeze the popliteal and tibial veins, 
bl is propelled →deep sys &amp; moves cephalad toward the heart (aka Venous ♥)

What is an effective calf muscle pump consist of?
<answer>
Vns as reservoirs for bl collection
Contracting muscles of the legs
Competent valves to maintain unidirectional bl flow

Bl → heart resulting in ↓ in venous pooling &amp; venous Po &amp; ↑ in venous return

<span style="background-color:#ffff00;">*If valves are incompetent, opposite occurs: Venous pooling &amp; venous Po ↑ while venous return ↓</span>
</answer>

Postphlebetic Syndrome
<answer>
Chronic Venous Insufficiency
Unilat LE swelling, aching &amp; a sense of heaviness
Usually from a previous DVT

*Prolonged return to pre-exercise
</answer>

Ischemic Ulcers
Commonly occur on the dorsum of the foot

Baker's Cyst
Contains synovial fluid from the knee joint

Deep Veins of Upper extremity fr fingers to the RT Atrium
1. Confluence of the venules of Deep digital veins → Metacarpal vns
2. Metacarpal vns→Deep venous arches→forearm vns
3. Radial &amp; Ulnar Vns join near the antecubital fossa in front of the elbow to form the Paired Brachial Vn
5. Brachial Vns paired w/ BA joins the Basilic Vn to becomes Axillary Vn 
Axillary Vn travels adj to Axillary Art and crosses the 1st rib to become the Subc Vn
6. Subc Vn is inf/ant to Subc Art and courses Medially
It joins IJV (Internal Jugular Vn) &amp; forms &amp; drains→Brachiocephalic/Innominate Vns
7. RT &amp; LT Innominate Vns unite to form SVC (Superior Vena Cava)
8. SVC carries bl → RT atrium

Upper Extremity Venous Anatomy
<img data-image_id="26f13408-27e5-4dc4-8413-1694b470409f" 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8Y5rStcOT2bkNqeejckZD2Tzcp9oCdxdloDht64xz5BblTQK0d21csxxT2Zp+2Y8s/RnY1vIEnxaTn2oM9XWatv0AxCT/PoXTRZA5NAaTnnyPeCxV9foWtPF2EvdCbLa/q89znBoPuO4HPkVHQ8JRVKtVtCSvXtQU5K752VwHSOc1o3nB6jBPPPVexwu6tBLDQuFsbn1pGNnaX7XwuBHQjkWtaMexBKX9YqUZpYrHaB0UImO1ucgu2gDzJPLHtWs/iOtC4suVblWUf6OSIOOPPLSR9Vhs6DavyyzXrkIlfA2JhghLQwtkD2uwXHOCOizu0zVJ3GSxrckbj+rWhDGAe5xcc/FBNIiICIiAiIgIi1dRsCpp1myTjsonP8AkEFa0Fuzh2aQHu2bsj28uozj+yo3WJoNC4ZmFZvZtjjMcLck953T88qT0VrouFNMjd1Ie/4FxI/NQXF+22NO0kZ327LS7b1DG+sfr9EHjh3Ti7ibQ9Jlxt0ikbUrT1E0h3Y+G5nyW/xNwNYkvDUeGpRUsyPAljY8xt5nm8EdPMj5c+sRwZcmt8US67Lu2W7PoxJ9rCR+TeS6sgrmi6tajkr6Tq9C1XuBm1kziZY5to5ntB4nGcHCsaqFvXdQg4nfUa6P0RlqCAtLW5w9rSf1txOXeAI81pQcVapHWMtjDjLWkfEHQbQZO0axm3aSXDLuYIBQXewzfEcdRzC0FCx8QWbFaiDbrUnvimM880Z29pEQ0tDSRjOS7zwFrWdbviaURxNLPSoYhK0AMAfC15GCd2ck+HRBY1v1hiBqpNDiGzY1ClDIG9lNWjEjgw4E74+09boBjAx1y4KQdrth3Del2a1it6RYEfb4LSW5YXENDnAZyOhI5Z8UGD7U7LYeEHxH1rEzGN+B3f2VXvsnifPFqbIbs1dzXRuLY2sIcCHddzT5eGFG/aHrv3pDpUAc07YTNIWNLQXuOOh6eqfE9epUPwjxFLw3qvpAZ2kEo2TR+JbnqPaEFw1CnNX1CxD6XLhkjgO6zpnl4K66BBaZp1R0lztI+yH4fZAfVU2xqFXVLc9unKJYZH5BHIj3jwKv+mNDdLqBowOxZ+QQR/EFCa56LJXie98L3HdDYMMrARjunofaCo37h1B7dLFh8TsZju4wN0YkEjByABORtOBz3Eq2ogr9SlfrzvrCpWkrvvPtekSHOGucXcm9d4JwD0wAfYrAiICIiAiIgIiICIiAiIgIiIK5FreoyaYdVbQidRdXknjLZe+0NaS3cCP1seGcZ8eq1zxTONObaeyiA+WKPJme1rN+ebi5gxjHhlSP8HKIjfEX2DCWPZHEZO5CHgh20e4nGc48Fkj0ONrYWS3Lc7IJGSRtkc3DS3p0aEEdV4qiklrttRsijlE/4sbnSMcY3NALSBzadxOfYvUfFG6HSJXVhi+0PmIfygaS1oPty57R8/JTj6cT9RhunPawxPibz5bXFpP9UKJ/gppLoOxmhMuIG143yYc6Jrc4LDjunLic+5BsnVj6NrEvYg/dr3tA3eviJr/h62FrRavqFqWY0aMMsdcR9o10u17nPaHkN5Y5NcOp5+xZpNBhkktn0y2yO4SZo2vbteS0MP6uegHivk3DtOcnc6drJGMZNE2TDJQ0YG4e7lyxkcigmdzfMfNV/jax2PDc0bOb53tiaB45OT9AVk/gdw5/M9X/AGVDXtC0mDifSKVClDA4l08xYMEtbzA9xIKCTfD6LBVqcs167IzjzA5rnmr6jI/iHU70Ic77urmGI+DHO7hcfAes7Ht2/C7cQak6OzcbUDXyQNLpHu9SIAZ5+Z5dPy6qi6ZTfNw/RodoTY1/UA5/LmIYyQSf9Yk/BBa4qI0n7NtPcGbZ2yRWTnkd7nZ5/A4V/VW4/G3h+JreQ9JYMDywVaUGH0av6R2/o8Xbf+psG759U9Gg7n4EX4fqdwd33eSzIgwOrQPaQ+CNwLt5BaDl3n719dBC7JdEw7nbjkDmcYz78LMiDA2tA1gY2GMNyHbQ0YyOh+gXhlGoxj2MqwNY/G5ojADsdM+a2kQfn7jG16XxZqT2+q2cxNA6AM7o/JQa2LpLr1guOSZHEk+9a6DZqW56cwlryFjvHyPvHiuncP8A2mUPRoq2rV5K742NZ2sY3sdjlnHUfVcoRB+kqGo09Sg7ehZinj/lRuBx7D5LbX5spXbWnWBYpWJIJW9HRuwf8QurcC8bS63Y+7NSYxtvYXMlZyEuOoI8D48vb0QX1ERAREQEREBERAREQEREBERAREQEREBERAVb05npfGmpXc5jqxNrNPtOCce4g/NWCaVkEMk0hwyNpc4+QAyq9whvZw1Ldl/SWpZJznzJx+5BXOLHx6bw3NXr73Psu7FpJy57nHJJPiSM5969cJ0Dc4w7dhHouhVm1Gf0pNpDvqX/AEUNxFqYm4oiY0B8GlRunf5bwMjPx2D3lXrgLTvu/hWq54/GtD0iVx6uLuY/4cIMPGxM0+j0OrbFsFzfMAgf2la1UA86v9oA2ZdX0yMgnw3/APk/8Kt6AiIgIiICIiD802/43P8A/I781gUrxNROncSahUxgMncW/sk5b9CFFICIiAtzSrElTVKtiFxbJHM1zSDjxWmt/Rq0l3WKVaL15ZmNHs5jmg/RyIiAiIgIiICIiAiIgIiICIiAiIgIiICIiCE4us+jcOW9p78zRCwDqS44x8srzqsseh8KuHLbWgAA89o/fj6pxHEbVrSae3IfcErj/RY0kqF+0eYzU62nMdt9LsRwE+W45P5BBStJ0mW5VpwTuJsa5cBefHsWZc4/E8/gF1zVbcek6PNZDRtgj7jOgJ6NHzwqzwpBHb4mu22RD0fTYm0q5xyDur8e0ch7lvcXZv2dM0Vh/jU2+XH8hvX9/wAkGbg3T30tI9In52bru2kJ64PT88/FWJeQA0AAYA5AL0gIorUNbr6fZfBJDZkdHCJ5DFHuDGZIyef9ErI7VqQ1CpREmZrcZkiwORaBn4ZGce4oJFFBv4jpxtnlfDa9Hh7UGfs8scYwS4Dnn9U9QAcclvM1Su9l17S/FL9L3f6Afy8+Tgg3kUK7iGmzm2KzKxsbJZZI48tha8ZBdzz054GcBTSDn32kcJzamI9U0yAy2mARzRMHN7fAjzI6e73KtaP9nOq6jQfYsPFGUOxHFOw5cPEny+S7MiDkX+SnV/5wo/N/9yf5KdX/AJwo/N/9y66iDk9f7KL7n/51qdZjPONjnn5HCuPDXBem8OyekQvksWi3Hay47o8doHT6qzogIiICIiAiIgIiICIiAiIgIiICIiAiIgIiIMEzIgW2JWjdCCWuPhkc1zLjvVPRtQ02RwDpI3vsYPmB3fr+S6Tf7IwCOV7mB55EDPP2rlPEVQ6j9osFDIkZCGNkHgGjLiPl+aC8/Z/WNXhmGOTPbSHtpCepL+fP/vwWMQWdU4u1CavZNc1IGwRTBgftccE8jyP6w+KlKUQrwOuyybI42ucRjq0DmtXguN79Jlvy57W9O+Z3Ppzxj6FBk+6de/8Ac8n+5Rf3KTow2YKojuXDblBJMpjazI8sDkttEFb13h1+qai+zik9slUV8WYi8sILjubgjn3vovL+G53W23DqEjrEL4OxJHd2xjBDvEk7pOh/WVmRBUdQ4SltzWnssVoTOJfxYoSyR4e1wDX4O1wG7rjJwPHmt52kaiyTUGQWKvYXyN29jtzfwmxnGDj9XKsCIK9Fot+m5wo3o4RPFEyZzodzmuY0N3M545gDkQcYz7FYURAREQEREBERAREQEREBERAREQEREBERAREQEREBERAREQVjjzVpdJ0WN9VrXWZ5hFHk+qSD3seOMKq0Kcei8bM08yulnnpfiyP5mSXcSTk9OQPyCmvtFc3ttHhwHSyzOZG32ksH71BasHTfaQ2+z1YrccLT5hroWO+sjkFw40s+hcMPij5OnLYR7jzP0B+amNLq+g6XVq+MMTWn2nHP6qJ1ihPqfEWmxPjcaVZrp5HEHa52eTff05eRKsSAiIgIiICIiAiIgIiICIiAiIgIiICIiAiIgIiICIiAiIgIiICIiAiIgIiIKPxmAeLNCLujHMIz4Ht4uarlEPluadYcT+K6Kw7PVzpbjefyjB+KkuP7L5OKqsMIy6tVMpPke8//APm35rXfLTr3dMjbagDYq1Bh/EHItsZdn2jqUHUUWrBfp2nllW3XmcBktjkDiB58itpARVXWOIb9HVH14YY5Y47ETXNDTuMZike/HP1u5yXmhrWp3pNKkZYqCC7HNK4dg4nEbgOR3eIPly9qC2IqVBxBrUmjVLkjGNksyQtaBWDuTwSS0NlJd0HXb7vL1FxJqU1Z7t9OB0FeWdzpo3Dttkj2bQ3d3D3OfM43BBc0VMPFGoh8sjm1I2ObJ2McnQObHvAc8O5Hkchwbjz8/J4j1V08NWIRPsGVzXhtcBwbsDh3TKG+fMPPJBdUVWl129HYldvq9nXtQ1nQOYe1l3hmXAh2B6+QMHk081rO4mvmpWdCKpmlgkfIHctrhMyMdXAZw53IkZIHMILkii9C1CXUKLpJix0scron7GFmCD4gk4OMdCR7VKICIiAiIgIiICIiAiIgIiICIiAiIgIiICLQ1jUG6Xpct57N7Yto27g3q4N6np1US7i2uyn2767iBZ7B3ZSNe3Abvc8OHIta3r7eSCyooGzxEK1uxG+lIYIJ213TB49dzA4d3rjvAZStxJXs3a1YQSAz1W2A/Iw1zmlwj/a2gn4IJ5Fqadbbf0yrdawsbZhZKGk5IDgDj6rbQcw1ppscW63YkPJlWaNjfLbHEM/8ZWSSuINQoDcXmSKjJlxycm0eXuAwPgvuoNc/iDW2MaXPdHaDWjqTsg5LLqbHV9b02F72SB0NQRubnvNbbGDz8S17c+3KDogaB0AC+oiDXNWAz9sYIzKCHb9o3ZAIBz7iR8SjKtaNsYjgiYIwQwNYBtB6geWVG6trn3dJdYa/aei0xazvxu7xG3py6dVjsa8+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width="330" height="256" >

Superficial Venous Sys of Upper Extremity
<answer>
<span style="text-decoration:underline;">Cephalic Vn
</span>Travels superficially up the Lat aspect of arm
Joins prox Subc Vn or distal axillary vn

<span style="text-decoration:underline;">Basilic Vn (Largest Vn in the UE)</span>
Travels superficially up the Medial aspect of arm
Joins w/ Paired Brachial vn to form Axillary vn

Cephalic &amp; Basilic Vns connect @ Antecubital fossa through Median Cubital Vn
They are paired closer to the wrist
</answer>

Veins you encounter fr the Lat aspect of the forearm
<answer>
Cephalic Vn
Radial Vns
Ulnar Vns w/ the Basilic Vn most medial

<em>*Many pts have extensive branches of the Basilic vn in the forearm &amp; one main vessel may not be found at the wrist level</em>
</answer>

Veins you encounter fr the Medial aspect of the forearm
Basilic Vn
Brachial Vns w/ Cephalic Vn most Lateral

Venae Comitantes
<answer>
Means corresponding veins &amp; refers to their close proximity to the accompanying Art (usually same name)
Usually found with certain smaller arteries,
especially those in the extremities. 

<span style="text-decoration:underline;">Extremity</span>                        <span style="text-decoration:underline;">Paired Vns</span>
Upper                              Brachial
                                      Radial
                                      Ulnar

Lower                              Ant Tibial
                                      Post Tibial
                                      Peroneal
</answer>

Deep Vns begin &amp; end @ the ff landmarks
Joining of the ATV+Tibial Peroneal trunk Vns=Pop V @ the Adductor Hiatus
From the Adductor Hiatus, SFV joins w/the Profunda Femoris Vn (DFV)
Fr the Inguinal Lig, EIV joins w/ IIV
Confluence of the CIV joins the IVC to the RT Atrium
Fr the medial arm vn, Basilic (superficial vn) joins the Brachial Vn
Fr the lateral arm vn, Cephalic (superficial vn) joins the Axillary vn
Joining of the Innominate Vns, SVC ends @ the RT atrium

Central Veins refer to which vessels?
<answer>
<strong>SVC</strong> is joined by the LT &amp; RT innominate vns
<strong>IVC</strong> is joined by the LT &amp; RT CIV
<strong>PORTAL VN</strong> is formed by vessels carrying bl → liver (ie Superior Mesenteric &amp; Splenic Vns)
<strong>HEPATIC VN</strong> are vessels that carry bl out of the liver → IVC

<em>*INSPIRATION &amp; EXHALATION have little, if any, affect on Central Vessels</em>
</answer>

Differences in the Venous system from Art sys
Thin-walled collapsible tubes that carry bl away from the periphery → heart
Has the same 3 layers as Art wall (medial layer is the thinnest)
Walls do not have the same elasticity as Art wall (it allows for some dilatation &amp;/or constriction)
Venous sys starts at the capillary level w/progressive ↑ in size as vessels carry bl → RT atrium
Venous valves are evident in some vessels

What are Veins?
-64% of our blood volume is carried in the veins.
-It can expand to hold large amts of
bl. 
-Veins are bl vessels that carry bl fr the body back to the heart. 
-Bl return fr the legs occurs mainly through the deep veins. 
-Within the veins, especially those of the
legs are valves.

What are Venous Valves?
-Extensions of Intimal layer that provide unilateral flow fr Superficial to deep &amp; fr the Periphery to Central venous sys
-They are bicuspid, essential to the muscle pump &amp; consist of endothelial tissue
-When the muscle is at rest, the valves close helping to prevent the backward flow of blood

Upper Extremity Vns w/ OR w/o valves
<answer>
<span style="text-decoration:underline;">W/o Valves:</span>
Innominate Vns
Sup Vena Cava (SVC)

<span style="text-decoration:underline;">W/Valves:</span>
Jugular Vn
Cephalic &amp; Basilic Vns
</answer>

Lower Extremity Vns w/o valves
Soleal Sinuses
EIV: contains valves 25% of the time
CIV
IIV
IVC

Lower Extremity Vns w/ valves
GSV (most below knee) : 12
Small Saphenous Vn: 6-12
Perforators: 1 ea
Infrapopliteal: 7-12 ea
Pop &amp; Femoral: 1-3 ea
CFV: 1 
EIV

What affects structure of Vn wall
Venous Vol
Venous Resistance
Venous Po

Venous Vol
-Thin walled collapsible nature of the veins
affect venous volume 
Low vol = dumbbell shape
High vol = Circular shape

Venous Resistance &amp; Compliance
<answer>
Flattened shape allows ↑ flow resistance than circular shape

<span style="text-decoration:underline;"><strong>Compliance:</strong></span> Ability of vns to accomodate large shifts in vol w/ limited changes in venous Po
</answer>

Venous Pressure
The shape of the vn determines transmural
pressure (distension pressure) 
 
Low bl vol=low Po
High vol=High Po

Factors that influence Venous Return in Hydrostatic Po
-Muscle contraction (ie, walking, swimming, running) promotes venous return by muscle pump
-Sympathetic activation of vns ↓ venous compliance, ↑ central venous Po &amp; promotes venous return indir by augmenting cardiac output through the Frank-Starling mechanism, w/c ↑ the total bl flow thru the circulatory system
-During respiratory inspiration, the venous return ↑ because of a ↓ in RT atrial Po 
-An ↑ in the resistance of the vena cava, as occurs when the thoracic vena cava becomes compressed during a Valsalva maneuver or during late pregnancy, ↓ return 
-Gravity

5 major factor influencing Venous Return
1. Respiratory cycle - Central venous pressure
(CVP) ↓ w/ inspiration thereby ↑ venous return.
(look @ inspiration)
2. Venous tone 
3. Right heart function - The bl reaching the RT ventricle is pumped to the pulmonary
circulation and therefore will not be damped
backward in the venous system. 
4) Gravity 
5) Muscle pump

Venous Dysfunction
-Develops when venous return is impaired for any reason, and can arise fr abnormalities w/in the deep veins, superficial veins, or a combination 
-Normal Po w/in the vns of the LE is extremely low. 
-Normal inflow to the LE vns is purely via arterial inflow
-When the entire venous system is filled, valves float open &amp; venous PO rises to
a maximum exactly equal to the height of the
standing column of venous blood from RT
atrium to foot. 
-This triggers an urge to move the legs, activating the muscle pumps and emptying the leg veins.

Inspiration
-Thoracic Po ↓ (CVP ↓ &amp; Venous Return ↑)
CVP: Central Venous Po
-Abd Po ↑
-Bl moves fr abd to thoracic section
-Bl fr legs ↓/stops
-Inflow fr UE is allowed (↑) &amp; →SVC drains

Expiration
-Thoracic Po ↑ (CVP ↑ &amp; Venous Return ↓)
-Abd Po ↓
-Bl fr legs ↑ in flow → IVC
-Bl fr arms ↓/stops due to high Po in that region

Valsalva Maneuver
<answer>
-Evaluates status of EIV, CIV and IVC
-Used to check for Valvular incompetence &amp; Superficial venous system
-As pt takes a deep breath &amp; holds it then bears down Both Thoracic &amp; Abd Po ↑ w/c leads to ↓ bl flow in both lower/upper extremities 
-While thoracic Po ↑ in Arterial sys, ↓ Venous return (flow &amp; vel) occurs causing Doppler venous signal @ the CFV to cease (stop).  
-As pt releases the breath &amp; stops bearing down, a decline in art BP resulting fr impaired
atrial filling w/c involves an ↑ in BP after a
sympathetic response &amp; augmentation of venous signal should be visible
-After the strain is released a ↓ in art BP is followed by another sympathetic restoration

Diminished augmentation=proximal obstruction
Augmentation of signal as pt bears down=flow reversal consistent w/ Valvular incompetence
</answer>

Valsalva Maneuver-Normal Result
-Diminishes Venous bl flow everywhere in the body  
As pt releases the breath &amp; stops bearing down, there s/b a brief ↑ in flow

Valsalva Maneuver-Abnormal Result
<answer>
If a prolonged flow reversal/reflux occurs=Incompetent valves 

In color, red flow lasting 0.5 a second then blue flow on release of valsalva= Incompetence  

Compress or squeeze proximal in the leg to check Competency of valves
</answer>

In CWD reflux texting, NORMAL result is:
<answer>
-Cessation of flow w/ proximal compression, resuming on release

-Augmentation w/proximal compression or on release of distal compression=<span style="text-decoration:underline;"><em>insufficiency</em></span>
</answer>

Reflux study results
-If color flow display lights up blue w/ calf compression then red for 2-3 seconds on release=Venous Reflux

<question>
Anatomical explanation for a deep vein
thrombus (DVT)?
</question>
Extrinsic compression of the lower left iliac
vein as it passes under the right iliac artery.
<em>LT Iliac Vn crosses <strong>Post</strong> to the RT CIA distal to the AO Bif</em>

May Thurner Syndrome
-Extrinsic compression of the LT Iliac vn as it passes under the RT Iliac art 
-causes ↑ incidence of acute DVT of LT lower extremity
-It is also known as iliac vein compression syndrome &amp; as  <span style="text-decoration:underline;">‘Crockett syndrome’.</span>  
-Should not be confused w/ external compression leading to ilio-femoral DVT.

DVT's common signs &amp; symptoms
-Pain/swelling in the ankles &amp; legs but not the feet
-Sometimes accompanied by redness &amp; warmth
-Relieved by elevation
+ Homans sign: pain in calf upon Dorsiflexion
-Clinical exam is neither specific/sensitive
-Diabetes is NOT a risk factor
-With DVT high up in the leg (iliofemoral vein), superficial vns may become visible over the thigh and hip areas as well as over the lower abdomen

Differential diagnoses of DVT
Muscle strain
Superficial Thrombophlebitis
Dir inj to leg
Varicose veins
Muscle tear
Baker's cyst
Cellulitis
Lymphangitis
Heart failure
Extrinsic compression
Complications of chronic venous insufficiency

Superficial Thrombophlebitis
A blood clot that forms in an inflamed part of
a vein near the surface of the body (i.e., not a
deep vein)
-Attributed to a thrombosed saphenous vn
-Results in significant incapacitation of pt
-Responds to ambulation, warm soaks &amp; aspirin
-Frequently recurrent
-NOT diagnosed by PPG

Types of skin changes in venous disease
-Venous insufficiency is the most common venous disease w/c presents w/ a range of skin changes 
-Skin edema fr fluid accumulation
-Redness (rubor) → (ie cellulitis)
-Brownish discoloration (brawny) fr venous stasis
-Whiteness (pallor)
-Bluish discoloration (cyanosis)

Cellulitis (skin change in venous disease)
Infection of dermal tissue causing abscess on skin
Red, warm tissue commonly seen on the shin/foot

Edema/Pitting Edema (skin change in venous disease)
-↑ capillary Po fr an obstructive process (excessive fl accumulation in tissues)
-Can also be related to electrolyte imbalance, renal dysfunction or congestive heart failure
-Pitting edema of <strong>BOTH</strong> LE is related to cardiac or systemic origin (CHF)

Lymphedema-Venous Pathology
Chronic Condition
Painless, swelling due to obstruction in the lymphatic system

Brownish discoloration (skin change in venous disease)
Evident in the medial surface of lower leg-to-ankle area (gaiter zone)

Whiteness (pallor) (skin change in venous disease)
fr <span style="text-decoration:underline;">arterial spasm</span> secondary to extensive, acute ilio-femoral thrombosis called <span style="text-decoration:underline;">Phlegmasia alba dolens</span>

Bluish discoloration (cyanosis) (skin change in venous disease)
fr severely reduced <span style="text-decoration:underline;">venous obstruction</span> called <span style="text-decoration:underline;">Phlegmasia Cerulea Dolens</span>

3 Risk Factors of Virchow's Triad in DVT
Trauma to the vessel aka endothelial damage
Venous stasis
Hypercoagulability

Examples of Trauma to a vessel in Virchow's Triad
Could be intrinsic (ie drugs, indwelling catheter) or extrinsic (ie following a fall, Paget-Schroetter Syndrome)

Examples of Venous stasis in Virchow's Triad
Can result fr a variety of causes incl:
bed rest 
immobility
myocardial infarction
congestive heart failure
hypotension
COPD 
SVC syndrome
Obesity
Pregnancy
Previous DVT
Extrinsic compression
Surgery
Paraglegia

Examples of Hypercoagulability in Virchow's Triad
Can be related to pregnancy, cancer treatment, estrogen intake, hyperviscosity, deficiency of antithrombin III, nephrotic syndrome, changes after severe trauma or burn, race, age, smoking, and obesity.

Most frequent complication of DVT
Chronic Venous insufficiency-typical rusty brown color at ankles &amp; calves

Chronic Venous Insufficiency
-Occurs bec obstruction created by DVT prevents adequate venous outflow
-LE ulcers are caused by CVI
-↑ venous vol results in ↑ Po
-Weak Calf muscle
-Congenital defect of the valves
-Previous DVT
-Valvular incompetence
-Post Phlebetic
-Results from Calf-vein, pop v, iliac vn thrombosis and superficial insufficiency

Most life threatening complication of a DVT
Pulmonary embolism

Pulmonary embolism
A piece of thrombus breaks loose &amp; travels centrally through the heart where it lodges in smaller vessels of the pulmonary circulation
-It can lead to even more serious complications, including: Heart palpitations, heart failure or cardiogenic shock. ↑ BP in the lung art (pulmonary hypertension).

Types of Tests used for PE
<strong>-Pulmonary angiography</strong> is the definitive diagnostic tool although spiral CT is the most widely used (Gold Standard Test)
-Radioisotope test w/c involves both breathing &amp; injection of the isotope is the <strong>V/Q scan
</strong>-<strong>Heparin</strong> is the drug of choice to manage PE

Common physical findings in PE
<answer>
-Tachypnea: rapid respiration
-chest pain
-Sudden cough, which
may produce bloody sputum 
-↓ Art bl gas
-shortness of breath (diaphoresis/dyspnea)
-Pleural Effusion

*90% of PE come fr LE DVT
</answer>

How does Chronic Venous insufficiency secondary to Valvular Incompetence lead to formation of venous stasis ulcers?
-Valvular incompetence causes venous hypertension
-When venous hypertension exists, arteries no longer have significantly higher pressure than veins, blood is not pumped as effectively, and it pools. 
-Alteration in energy gradient across capillary bed ↓ bl flow
-Stagnant bl ↑ capillary Po causing fluid, RBC's &amp; other products leak into surrounding tissue
-Hemosiderin fr breakdown of stagnant RBC's causes brawny discoloration
-Breakdown of other substances can prevent surrounding tissue fr rcvng proper tissue nutrition &amp; oxygenation leading → ulceration
-Wounds may not properly heal if there is an underlying venous disease

Venous Stasis Ulcers
Near medial malleolus cephalad to the foot
Shallow &amp; irreg shaped &amp; located in bony prominences 
Stasis dermatitis: Infection/inflammation, brawny, LE varicosities, edema
Mild Pain
Venous ooze
Commonly occur in the LE
*Venous ulcers tend to develop near medial malleolus bec of perforators @ that location
<em><strong>LE ulcers are the result of Venous Disease</strong></em>

Varicose Veins
-Varicose veins are actually just normal veins that have dilated due to high pressure becoming "Incompetent valves"
-Symptoms include aching pain, burning,
cramping, throbbing, leg fatigue, and swelling.
-Standing for long periods and heat aggravate
symptoms. 
-Pregnancy and the menstrual cycle also tend to worsen symptoms
-Walking, cool temperatures and elevation
improves them.

Primary Varicose Veins
-Caused by Valvular incompetence of the superficial venous sys in the presence of an intact deep venous sys
-Varicosities result fr hereditary weakness or absence of venous valves
-Aggravating factors include pregnancy, obesity &amp; occupations w/c require long periods of standing

Secondary Varicose Veins
-Pain during walking
-Secondary varicose veins are those due to
obstruction and valvular incompetence of the
deep veins. 
-This is the more serious form.

PPG Technique &amp; diagnostic criteria in venous insufficiency
-Pt is seated w/ legs dangling
-Sensor applied above medial malleolus
-Pt does 5 foot dorsiflexions to empty vns
If Venous refill time (VRT) is ≥20 sec=Normal
If VRT &lt;20 sec, a tourniquet is applied to eliminate infl of superficial venous sys &amp; study is repeated
If repeat VRT &gt;20 sec=Superficial sys has Venous IcompetenceIf repeat VRT remains &lt;20 sec=Deep sys is incompetent

Type of modalities for IPG, SPG &amp; Air Plethysmography
-They are all capacitance/outflow modalities and utilizes a scoring grid to plot them
-All used in detecting significant DVT

Capabilities &amp; limitations of APG in diagnosing Venous disease
-Documents Chronic Venous Insufficiency by quantifying the changes in venous outflow, venous reflux, calf muscle pump function &amp; ambulatory venous pressure (↑)
in pts w/ chronic swelling, venous ulcers &amp;/or varicose veins
-Can't be performed in pts w/ Acute DVT
-Inaccurate results will be obtained if PPG sensor is not place @ right site (ie over a varicose vein or if skin is very thick or not intact)

How does PPG monitor flow in either Venous or Arterial systems
Plethysmography measure Vol changes from all vessels under the sensor
Capable of utilizing either DC or AC coupling monitor flow patterns fr either Venous or Arterial sys

DC (Direct Current) equipment
Dir Current that is either + or -
Only flows in 1 direction (ie battery)
DC power evaluates relatively slow changes in bl content of the skin, it used for VENOUS eval

AC (Alternating Current) equipment
<answer>
Alternating current of 60 cycles/sec (reverses current fr + to - 60 times per sec)
With AC power, intense flow changes are required to produce measurable signal
It is used for ART studies

<span style="background-color:#ffff00;">*Tech must set equipment to the appropriate coupling depending on study </span>
</answer>

Venous flow using Air-plethysmography (APG)
Pt supine &amp; leg passively raised=Venous sys is emptied
When pt quickly stands=↑ Venous Vol (VV) is seen
When pt completes 1 tiptoe exercise=↓ in calf VV is seen &amp; calculated as the ejection vol (EV)
VFT is measured after a series of 10 tiptoe exercise
As pt quickly go back to supine position; same leg is elevated, Vns should empty

3 measurements obtained using APG
<strong>VFI (Venous Filling Index):</strong> rate of venous filling
<strong>EF (Ejection fraction):</strong> measures function of calf muscle pump &amp; s/b &gt;60%
<strong>RVF (Residual Vol Fraction):</strong> is percentage of VV remaining after 10 tiptoe exercise

UE Vns-Duplex Exam
<answer>
Pt Supine
7-10 MHz linear probe
Obtain compression, non-comp gray scale, color &amp; PW images on the ff:
IJV, SCV, AXILLARY V, BRACHIAL V, CEPHALIC V, BASILIC V, RADIAL/ULNAR VS

*Sniff to compress SCV
</answer>

LE Vns-Duplex Exam
Pt Supine in a <strong>Semi-Fowler or Reverse Trendlenberg</strong> position
Leg bent
5-7 MHz linear probe
-Use AUG to prove there is NO thrombus
-Obtain TRV, gray scale on the same screen w/ &amp; w/o comp of:
CFV, DFV (P), SFV (P/M/D), POPV, ATV, PERO V, PTV

LE Vns-Duplex Exam SAGGITAL
Grayscale &amp; color w/ PWD 
Make sure color is filled from wall to wall, 
<span style="text-decoration:underline;">if there are filling defects:</span>
↓ scale to show slow flow
↑ color gain, ↑ persistence, ↓ F, ↓ filter, ↓ box size, distal squeeze, lift Po fr vessel

LE Vns-Duplex Exam PW
<strong>Spontaneity:</strong> flow is immediately seen when probe is placed over vessel
<strong>Phasicity:</strong> related to respiration
-During inspiration venous
signals stop, during expiration venous signals return in an augmented state. 
<strong>Augmentation</strong> w/ distal compression &amp; proximal release
<strong>Patency:</strong> open vessel throughout

CWD Venous assessment
<answer>
Venous incompetence or Valvular incompetence can be assessed w/ handheld CW doppler

-Nonspontaneous flow seen in PTVs or GSV is common in pts that are nervous and/or cold &amp; therefore, <span style="text-decoration:underline;">Vasoconstricted</span> (less flow in venous side due to closed down arterioles)
</answer>

Sonographic finding with Venous compression
-The key ultrasound finding in excluding venous clot is the complete compressibility of the vein w/ downward pressure of the U/S probe 
-With thrombosis and lumen obstruction, downward probe Po will fail to compress the vein image
-failure to collapse the vn w/ enough pressure to deform the artery is considered a positive
finding for venous occlusion 
-Incomplete or partial collapse is also considered an abnormal finding

Object of Venous study
To r/o DVT, to check compressibility &amp; spontaneous signal
Shallow breathing → Cont flow (NO phasicity)
Ask PT to breathe deep &amp; check for phasicity (spontaneous, or steady flow) to r/o DVT

What is a Venous thrombectomy?
-Surgical removal of a vn clot. 
-This procedure, most commonly
used to treat <em>a rare complication</em> of DVT called P<em>hlegmasia cerulea dolens</em> 
-When combined with one or more of the ff treatments there is a 70-100% success rate: Thrombolysis; Anticoagulant medications; Angioplasty and stenting; and Placement of a vena cava filter.

Risk factors that Incr complications following venous thrombectomy
&gt;65 y/o; Have bleeding tendencies; Have HTN, CHF, or poor kidney function; or Are allergic to contrast dye. 
-Other complications for treatment of DVT include: PE; Post-thrombotic syndrome;
Phlegmasia cerulea dolens, hemorrhage,
Stroke.
-Has been assoc to repeat clotting

IF pulsatile flow is seen in Vns
Indicates venous or pulmonary HTN, CHF, or the presence of an AVF 
If Bilat =Systemic Venous HTN
(<strong>EXCEPT:</strong> Flow in <em>JUGULAR, SUBC</em> &amp; <em>INNOM</em> is pulsatile due to close proximity to the heart
<span style="background-color:#ffff00;">SUBC VN will usually Augment w/ Inspiration</span>

Guidelines to determine <span style="text-decoration:underline;">Acute DVT</span>
<strong>-No Collateralization </strong>
<strong>-No color filling</strong>
<strong>-Attachment of thrombus may be poorly attached to the wall (like a tail)
</strong>-Vessel not completely compressible
-<strong>Anechoic or sonolucent</strong> (absence of echoes) or very low-level echoes
-Dilated (compared to accompanying art)
-Abnormal flow patterns<strong>
</strong>

Guidelines to determine <span style="text-decoration:underline;">Chronic DVT</span>
-Vessel may not be completely compressible
<strong>-Hyperechoic</strong>
<strong>-Retracted vessel size</strong>
-May be abnormal flow patterns
<strong>-Collateralization may be evident</strong>
<strong>-Vessel fills; color shift indicating Reflux may be seen</strong>
-Thrombus very well adhered to wall
<strong>-Assoc w/ pigmentation, brawny edema</strong>
<strong>-Subcutaneous fibrosis</strong>
<strong>-Cutaneous atrophy</strong>

Venogram or Contrast Venography
-INVASIVE Procedure that provides x-ray visualization of the veins, particularly in the LE 
-A special dye is injected that is visible upon x-ray 
-Pt <span style="text-decoration:underline;"><em>position</em></span> is on an <em><strong>exam table tilted 60<sup>0</sup>upright</strong></em>
-It allows the physician to evaluate the size and condition of the veins
-It is the gold standard for diagnosis of DVT
-Several methods are used to visualize the Vns: Ascending Venography, Descending Venography, Venography of the UE, Venacavography

Describe Ascending venography
<answer>
-Assesses Acute DVT 
-Identifies the <em>presence and location of DVT.</em>   -Venous <em>puncture site</em> is on the <strong><span style="text-decoration:underline;">dorsum of the foot</span></strong>
-Capable of identifying <span style="text-decoration:underline;"><em>filling defects</em> </span>consistent w/ an acute DVT, <span style="text-decoration:underline;"><em>anatomic variations</em></span> &amp; development of <span style="text-decoration:underline;"><em>collateral</em> </span>channels

<span style="background-color:#ffff00;"><em>*This info may be helpful in determining if pt is a candidate for surgical intervention</em></span>
</answer>

Descending Venography
-Is performed to diagnose Valvular Insufficiency
-Identifies specific Valvular Incompetence
-Venous <em>puncture site</em> is @ the <strong><span style="text-decoration:underline;">CFV</span></strong>

Limitations to Venography
Highly technical in technique &amp; interpretation
Expensive
Uncomfortable
Adverse effects of the contrast media
Not for pts w/ severe peripheral vascular occlusive disease (PVOD)
Not for pts w/ allergies to iodine

Venography of the UE
-Assesses blockage, lesions, or thrombosis in the veins of the neck and axillary (armpit) region

Thrombocytopenia
↓ in platelets
Causes bleeding complication (hematoma) in pts w/ heparin treatment

Medications that are usually prescribed to pts w/ acute DVT
<answer>
If no contraindications (ie active bleeding) pt usually rcvs a 5-10 day dose of IV heparin

<strong>Coumadin:</strong> interferes w/ formation of bl clot. It is taken on a reg basis for 3-6 mos
<strong>Heparin:</strong> interferes w/ formation of bl clot
<strong>Lytic therapy:</strong> ie streptokinase or urokinase, breaks down thrombus &amp; is usually recommended when DVT is limb threatening (ie phlegmasia cerulea dolens &amp; phlegmasia alba dolens)
</answer>

What invasive treatments are available to pts w/ acute DVT?
Placement of IVC interruption device to prevent PE (pulmonary embolism)
Iliofemoral thrombectomy may also be considered for impending limb loss

What is an Anticoagulant?
-A substance that prevents coagulation (it stops blood from clotting).
-These anticoagulants are used to treat pts.
with DVT, PE, atrial fibrillation (AF), and
mechanical prosthetic heart valves.
-Warfarin (Coumadin) is the most common used agent
-Heparin is another agent used w/c
works by activating antithrombin III, w/c
blocks thrombin from clotting blood. It can be used in vivo (by injection), and also in
vitro to prevent blood or plasma clotting in or
on medical devices.

How does Vitamin K influence anticoagulants?
-It hinders the effect of anticoagulant Coumadin
-Vitamin K laden foods (generally leafy green
vegetables) and diuretics (↑ clotting
factor concentration) <span style="text-decoration:underline;">reduce the anticoagulant</span>
<span style="text-decoration:underline;">effect</span> and ↓ the turnover of clotting factors.

What is a Diuretic?
-sometimes called "water pills."    
-used to treat CHF, high BP or edema (water
retention) 
-lower the amt of salt or sodium and water in your body, w/c helps to lower your BP
-Lasix, Aquatensen, Diucardin, Diulo, Diuril,
Enduron and Hydro are are commonly used
diuretics.

Abdominal Venous duplex evaluates the ff:
<strong>IVC interruption devices:</strong> placed below the Renal Vns &amp; are bright echogenic lines on B-mode
<strong>Systemic Venous Hypertension:</strong> Persistent dilated vessels consistent w/ Venous Hypertension
<strong>Portal Hypertension:</strong> ↑ Portal Venous Po = in variety of flow alterations like reversed flow in PV (hepato-fugal instead of hepato-petal) ↑ flow in HA &amp; development of collateral channels

Quality assurance values
Sensitivity
Specificity
+Predictive value
- Predictive value
Accuracy

Sensitivity (QA val)
Ability of a test to detect disease when it is present
Divide # of <span style="background-color:#ffff00;">true +</span> noninvasive studies by <span style="background-color:#ffff00;"># of</span> <span style="background-color:#ffff00;">all false -</span> = <span style="background-color:#ffff00;"># of + gold standard studies
</span>

Specificity (QA val)
Ability of a test to exclude disease when no disease is present
Divide # of <span style="background-color:#ffff00;">true -</span> noninvasive studies by <span style="background-color:#ffff00;"># of</span> <span style="background-color:#ffff00;">all false +</span> studies= <span style="background-color:#ffff00;"># of - gold standard studies</span><span style="background-color:#ffff00;">
</span>

+ Predictive Val (QA val)
How often a + study is correct
Divide the # of True+ noninvasive studies by total # of Abnormal + noninvasive studies whether studies were correct or incorrect in picking up disease

- Predictive Val (QA val)
How often a - study is correct
Divide the # of true - noninvasive studies by total # of Normal - noninvasive studies whether studies were correct or incorrect in excluding disease

Accuracy (QA val)
Overall ability of a test to identify disease as well as to exclude it
Indicates how confident you are that the noninvasive study is correct
Divide # of true positive + true negative noninvasive studies by total # of noninvasive studies whether they were correct or not

Define True +, False +, True -, False -
<strong>True + :</strong> study is + (disease detected thru radiology, surg, pathology, etc)
<strong>False + :</strong> study is + but pt does not have disease state. Findings not confirmed (by gold standard) or wrong
<strong>True - :</strong> study is - (no disease findings thru radiology, surgery, etc)
<strong>False - :</strong> study is - but pt has the disease state &amp; was missed. Findings not confirmed (by gold standard) or wrong

Steps to take in calculating QA test
1. Compare noninvasive results w/ gold standard
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" 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" >


What is Statistics?
aka Average
Add the numbers together 
Divide by how many numbers were added together 
<span style="background-color:#ffff00;">The mean</span>
<span style="background-color:#ffff00;">of 4,7,10,3,3,3 is <strong><span style="text-decoration:underline;">5</span></strong></span>.

What is Statistics "mode"?
<answer>
Mode-Arrange the numbers in order by size
Determine the number of instances of each
numerical value
The numerical value that has the <em>most instances</em> or <strong><em>most common occurring</em></strong> is the <strong><span style="text-decoration:underline;">Mode</span></strong>

<span style="background-color:#ffff00;">The mode of 2, 4, 5, 5, 5, 7,</span>
<span style="background-color:#ffff00;">8, 8, 9, 12 is <span style="text-decoration:underline;"><strong>5. </strong></span></span>
</answer>

What is Statistical median of a group?
Arrange the numbers in order by
size 
If there is an odd number of terms; the
median is the center term
If there is an even
number of terms, add the two middle terms
and divide by 2

Vagal Stimulation of the heart will?
<answer>
↓ SA Node rate (natural pacemaker of the ♥)
-Parasympathetic innervation of
the heart is controlled by the vagus nerve; therefore, vagus nerve lowers the
heart rate.

<em>*Sympathetic nervous system of the ♥ ↓ AV conduction time &amp; ↑ the heart rate &amp; contractility</em>
</answer>

Inertia, Kinetic Energy, Potential Energy, Hydrostatic Po, Viscosity, Stasis
Inertia: when flow accelerates/decelerates (due to change in dir)
Kinetic: Energy of something in motion
Potential: form of BP
Hydrostatic: Gravity
Viscosity: Friction or resistance of bl &amp; by its Inertia
Stasis: Stagnant

Respiratory Acidosis/Alkalosis
<span style="text-decoration:underline;"><strong>Acidosis:</strong></span> build up of carbon dioxide (Ph=7.4 normal) Ph=<em>7.3</em> acidosis (hypoventilation)
<span style="text-decoration:underline;"><strong>Alkalosis:</strong></span> Deficient carbon dioxide (PCo2=40 normal) PCo2=<em>30</em> alkalosis (hyperventilation)