Echo measurements PP
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Who came up with the measurements for echocardiography?
American Society of Echocardiography (ASE)
What two modalities do we measure in?
In what modalities do PEDs usually measure in?
In what modalities do ADULT echo usually measure in?
Which view is most accurate for taking measurements?
Parasternal Long or Parasternal Short
Because it is the most perpendicular (90 degree angle)
What is the Fractional Shortening formula?
LVIDd-LVIDs / LVIDd X 100 =
What is the normal values for fractional shortening?
What are children's measurements based on?
NOT based on?
The larger the BSA the ...
the larger the cardiac chambers.
What formula used for body surface area?
Ht (cm) X Wt (kg)
sq. root --------------------
1 in = ____ cm
1 lb = _____ .45 kg
What method of measurement is the standard?
leading edge to leading edge (trailing edge)
It is the standard because it is the most accurate.
Why is leading edge to leading edge used?
Used to eliminate error or variations in standard measurements.
Will always be the same regardless of instrument or setting.
What is an important factor to remember?
A measurement must fit the overall size and relationship between other structures of the heart.
When should you not measure? (4)
1.) Limited acoustic window
2.) Suboptimal plane
3.) You must be able to visualize the endocardium.
4.) You must not guess where the borders are
Where are End-Diastolic measurements taken? (5)
1.) the "Q" wave of the EKG
2.) Maximum LV dimension
3.) just before the squezze
4.) MV and AV are closed
5.) isovolumic contraction
What is measured during End-diastole? (4)
How are each one measured?
Example: leading edge to leading edge
1.) RV (leading edge to leading edge)
2.) IVS (leading edge to leading edge)
3.) LV (leading edge to leading edge)
4.) LVPW (leading edge to leading edge)
What is measured during Beginning systole? (2)
2.) AO Root
Where are End-Systolic measurements taken?
1.) at the end of the T wave
2.) at the point of the biggest squezze
3.) isovolumic relaxation
What is measured during End-Systolic? (3)
3.) Ascending AO
What is important to remember when measuring the Ascending AO?
look and measure at its widest point
Echo measurements PP