MIC Ch5 IV Procedures & Contrast Agents

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sully79
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308456
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MIC Ch5 IV Procedures & Contrast Agents
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2015-09-24 12:58:34
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MIC CT Registry Review
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CT IV Procedures and Contrast Agents
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  1. 28. Which of the following is a result of injecting a hypertonic solution into the vascular space?
    A. there is a net movement of water into the vascular space
    B. there is a net movement of water out of the vascular space
    C. there is nothing noteworthy about injecting a hypertonic solution into the vascular space
    D. there is a net movement of contrast media out of the vascular space
    A. there is a net movement of water into the vascular space
    (this multiple choice question has been scrambled)
  2. Which of the following is a common patient reaction to IV contrast media?
    1. warmth at the injection site
    2. headache
    3. nausea
    A. 1 only
    B. 2 only
    C. 3 only
    D. 1, 2 and 3
    D. 1, 2 and 3
    (this multiple choice question has been scrambled)
  3. 34. Low osmolar contrast media:
    A. is never used in CT
    B. tends to cause more adverse reactions than high osmolar contrast media
    C. typically has the same concentration of particles as the blood
    D. typically has a higher concentration of particles compared to blood
    D. typically has a higher concentration of particles compared to blood
    (this multiple choice question has been scrambled)
  4. 38. Which of the following is TRUE regarding barium sulfate solutions used in CT?
    A. they are less concentrated than those used in conventional radiography
    B. they are the same as those used in conventional radiography
    C. they are in no way related to those used in conventional radiography
    D. they are more concentrated than those used in conventional radiogrpahy
    A. they are less concentrated than those used in conventional radiography
    (this multiple choice question has been scrambled)
  5. 11. Barium sulfate oral contrast media would be selected instead of iodinated oral contrast media because:
    1. it passes through the GI tract more quickly
    2. the trauma patient may have a perforated bowel
    3. the contrast media stays more dense in the distal GI tract
    A. 2 and 3
    B. 1 only
    C. 2 only
    D. 3 only
    D. 3 only
    (this multiple choice question has been scrambled)
  6. 20. Which of the following may help to reduce adverse reactions resulting from the administration of IV contrast media?
    1. use high osmolar contrast media
    2. administer an antihistamine prior to the IV contrast injeciton
    3. increase the rate of injection
    A. 2 only
    B. 1, 2 and 3
    C. 1 only
    D. 3 only
    A. 2 only
    (this multiple choice question has been scrambled)
  7. 3. Which of the following oral contrast agents is better for opacifying the distal small intestine?
    1. an ionic iodinated contrast agent
    2. a non-ionic iodinated contrast agent
    3. barium sulfate
    A. 3 only
    B. 1 only
    C. 2 only
    D. 1, 2 and 3
    A. 3 only
    (this multiple choice question has been scrambled)
  8. 31. Iodinated IV contrast agents perfuse normal:
    A. lymph nodes
    B. thecal sac
    C. liver tissue
    D. brain tissue
    C. liver tissue
    (this multiple choice question has been scrambled)
  9. 36. Which of the following is NOT a typical adverse reaction to oral contrast media used in CT?
    A. abdominal cramping
    B. diarrhea
    C. hives
    D. flatulence
    C. hives
    (this multiple choice question has been scrambled)
  10. 17. A delay of about _____ seconds after the start of the IV contrast injection should be used for a helical scan of the neck.
    A. 20
    B. 50
    C. 35
    D. 75
    C. 35
    (this multiple choice question has been scrambled)
  11. 13. If there is doubt regarding the sterility of the contrast media, the contrast media must be:
    A. discarded
    B. diluted
    C. shaken
    D. heated
    A. discarded
    (this multiple choice question has been scrambled)
  12. 12. The most common catheter size used in CT is _____ guage.
    A. 15 to 17
    B. 12 to 14
    C. 18 to 22
    D. 23 to 25
    C. 18 to 22
    (this multiple choice question has been scrambled)
  13. 27. Viscosity is a measure of a fluid's:
    A. atomic weight
    B. tempature
    C. thickness
    D. injection rate
    C. thickness
    (this multiple choice question has been scrambled)
  14. 7. The viscosity of IV contrast media can be reduced by:
    A. heating
    B. aerating
    C. shaking
    D. stirring
    A. heating
    (this multiple choice question has been scrambled)
  15. 25. Why is the cephalic vein a less desirable site for injection then the basilic vein?
    A. flow may be impeded as the patient's arms are raised
    B. the blood must transverse the vessels in the head before reaching the heart
    C. it is a deep vein and not easily catheterized
    D. it is usually a very small vwin with poor blood flow
    A. flow may be impeded as the patient's arms are raised
    (this multiple choice question has been scrambled)
  16. 9. A difference in density of _____ HU between the aorta and the inferior vena cava would indicated the non-equilibrium phase of enhancement.
    A. 8
    B. 35
    C. 25
    D. 43
    C. 25
    (this multiple choice question has been scrambled)
  17. 22. There is a substantial enhancement of the liver compared to tumors during the _____ phase, but during the _____ phase, there is the possibility of tumor enhancement, which may make hepatic turmors isodense with liver tissue.
    A. non-equilibrium, bolus
    B. equilibrium, non-equilibrium
    C. bolus, equilibrium
    D. non-equilibrium, equilibrium
    D. non-equilibrium, equilibrium
    (this multiple choice question has been scrambled)
  18. IV contrast agents used in CT increase the attenuation of the x-ray beam due to the concentration of _____ in the agent.
    A. meglumine
    B. barium
    C. glucose
    D. iodine
    D. iodine
    (this multiple choice question has been scrambled)
  19. 4. The definition of osmolality is the _____ the contrast agent solution.
    A. measure of dissociation of
    B. rate of injection of
    C. thickness of
    D. concentration of molecular particles in
    D. concentration of molecular particles in
    (this multiple choice question has been scrambled)
  20. 15. The osmolality of plasma is _____ mOsm/kg.
    A. 285
    B. 175
    C. 325
    D. 235
    A. 285
    (this multiple choice question has been scrambled)
  21. 29. The portal venous phase occurs about _____ seconds after the start of the IV contrast injeciton.
    A. 60 to 90
    B. 40 to 60
    C. 90 to 120
    D. 20 to 30
    A. 60 to 90
    (this multiple choice question has been scrambled)
  22. 35. The hepatic arterial phase occurs about _____ seconds after the start of the IV contrast injection.
    A. 60 to 80
    B. 0 to 20
    C. 20 to 40
    D. 40 to 60
    C. 20 to 40
    (this multiple choice question has been scrambled)
  23. 10. A delay of about _____ seconds after the start of the IV contrast injection should be used for a helical scan of the chest.
    A. 15
    B. 30
    C. 60
    D. 45
    B. 30
    (this multiple choice question has been scrambled)
  24. 24. Which of the following is a typical scan delay following the start of the injection for helical CT examinations of the pancreas?
    A. 80 to 90 seconds
    B. 70 to 80 seconds
    C. 50 to 60 seconds
    D. 2 to 3 minutes
    C. 50 to 60 seconds
    (this multiple choice question has been scrambled)
  25. 23. Exams to rule out _____ would indicate the use of IV contrast media in the chest.
    1. lymphoma
    2. hilar mass
    3. aortic dissection
    A. 2 only
    B. 1, 2 and 3
    C. 1 only
    D. 3 only
    B. 1, 2 and 3
    (this multiple choice question has been scrambled)
  26. 21. To best visualize the stomach wall, which of the following should the patient drink last?
    1. iodinated oral contrast media
    2. water
    3. barium sulfate oral contrast
    A. 1, 2 and 3
    B. 2 only
    C. 3 only
    D. 1 only
    B. 2 only
    (this multiple choice question has been scrambled)
  27. 26. How long does it take to inject 150ml of contrast media with an injection rate of 2 ml/sec.?
    A. 50 seconds
    B. 75 seconds
    C. 1 minute
    D. 2.5 minutes
    B. 75 seconds
    (this multiple choice question has been scrambled)
  28. 8. The heating unit on a power injection is for _____ of the contrast agent.
    A. decreasing the viscosity
    B. decreasing the osmolality
    C. increasing the iodine concentration
    D. increasing the density
    A. decreasing the viscosity
    (this multiple choice question has been scrambled)
  29. 1. What should be done if extravastion is noticed at the injection site?
    A. stop the injection immediately
    B. slap the area
    C. apply ice during the injection
    D. apply heat during the injection
    A. stop the injection immediately
    (this multiple choice question has been scrambled)
  30. 6. Which of the following characteristics of an IV contrast agent affects patient tolerance?
    1. concentration of iodine
    2. osmolality
    3. viscosity
    A. 1 only
    B. 1 and 2
    C. 2 and 3
    D. 1, 2 and 3
    D. 1, 2 and 3
    (this multiple choice question has been scrambled)
  31. 32. Which of the following is associated with a bi-phasic study of the liver?
    1. differentiation of lesions with arterial and portal venous blood supplies
    2. two injeciton rates used during the study
    3. two images for each slice position
    A. 1 and 2
    B. 2 and 3
    C. 1 and 3
    D. 1 only
    C. 1 and 3
    (this multiple choice question has been scrambled)
  32. 40. Contrast agents containing barium sulfate:
    1. enhance structures because they are absorbed into the blood stream
    2. enhance structures because ethey are absorbed through the small intestine
    3. pass through the GI tract unchanged
    A. 3 only
    B. 1 and 2
    C. 2 only
    D. 1 only
    A. 3 only
    (this multiple choice question has been scrambled)
  33. 14. An indication for IV contrast injeciton is to rule out:
    A. sinusitis
    B. Grave's disease
    C. mastoiditis
    D. meningioma
    D. meningioma
    (this multiple choice question has been scrambled)
  34. 5. When a contrast agent is injected directly into the joint space it is known as _____ contrast.
    A. intraarticular
    B. intrathecal
    C. intravenous
    D. oral
    A. intraarticular
    (this multiple choice question has been scrambled)
  35. Which of the following is TRUE regarding ionic contrast agents?
    1. ionic agents are charged ions
    2. ionic agents dissociate into ions in solution
    3. ionic agents ioniaze tissue they contact
    A. 3 only
    B. 1 only
    C. 2 only
    D. 1, 2 and 3
    C. 2 only
    (this multiple choice question has been scrambled)
  36. 39. The contrast between a lesion and the surrounding tissue may _____ following the injection of contrast media.
    1. improve
    2. remain unchanged
    3 be degraded
    A. 1 only
    B. 2 only
    C. 1, 2 and 3
    D. 3 only
    C. 1, 2 and 3
    (this multiple choice question has been scrambled)
  37. 2. Which of the following is the order in which the pases of IV contrast enhancement occur?
    A. bolus, non-equiolibrim, equilibrium
    B. equilibrium, non-equilibrium, bolus
    C. non-equilibrium, equilibrium, bolus
    D. bolus, equilibrium, non-equilibrium
    A. bolus, non-equilibrium, equilibrium
    (this multiple choice question has been scrambled)
  38. 30. An injection rate of _____ cc/sec. will maintain a dense bolus of IV contract media for a CTA examination and will be tolerated by most patients.
    A. 4-5
    B. 1-2
    C. 7-8
    D. 8-10
    A. 4-5
    (this multiple choice question has been scrambled)
  39. 33. A CT study of the brain to visualize MS plaques may be made more sensitive by using _____ delay after the contrast agent has been injected.
    A. 45 minutes
    B. 45 seconds
    C. 2 hours
    D. 15 minutes
    A. 45 minutes
    (this multiple choice question has been scrambled)
  40. 19. What is the appropriate care to give to a patient with diabetes?
    1. if IV contract media is required, use LOCM
    2. if the patient is using Metformin, advise them to stop its use 48 hours before IV contrast is administered
    3. if the patinet is using Metformin, advise them to resume its use 48 hours after IV contrast administration oly after kidney function has been reassessed and determined to be normal
    A. 1 only
    B. 2 and 3
    C. 1 and 2
    D. 1 and 3
    D. 1 and 3
    (this multiple choice question has been scrambled)
  41. What is the HU difference between the abdominal aorta and inferior vena cava during the non-equilibrium phase?
    10-30 HU
  42. What is the HU difference between the abdominal aorta and the inferior vena cava during the equilibrium phase?
    Less than 10 HU
  43. How many seconds does it take for the Hepatic Arterial Phase to occur?
    20-40 seconds
  44. How many seconds does the Portal Venous Phase to occur?
    60-90 seconds
  45. What is used as a negative contrast agent for oral contrast studies?
    Air or CO2
  46. Which oral contrast passes thru the gastrointestinal tract more quickly?
    Iodinated
  47. How much of a scan delay is used for the pancreas?
    50-60 seconds
  48. How much of a scan delay is used for the kidneys?
    75-85 seconds
  49. How much of a scan delay is used for a routine liver?
    65-75 seconds
  50. 16. Which of the following is FALSE about the catheter used to administer iodinated IV contrast during CT exams?
    A. Standard peripherally inserted central catheters like those used for chemotherapy are required
    B. Typically an 18 to 22 gauge catheter is selected
    C. Specially labeled PowerPICCs may be used up to 5 ml/sec
    D. Larger catheters are used for higher rates of injection
    A. Standard peripherally inserted central catheters like those used for chemotherapy are required
    (this multiple choice question has been scrambled)
  51. 37. What type of "negative" contrast agent is administered rectally for virtual colonoscopy studies?
    A. Barium sulfate oral agents
    B. Water
    C. CO2
    D. Iodinated oral agents
    C. CO2
    (this multiple choice question has been scrambled)
  52. 18. According to American College of Radiology (ACR) guidelines, which of the following statements is TRUE about using iodinated IV contrast media with pregnant patients?
    1. Under no circumstances should IV contrast be administered to a pregnant patient
    2. IV contrast may be administered when it is not prudent to wait to obtain the clinical information until after the pregnancy
    3. IV contrast may be administered if the clinical information obtained will affect the care of the patient and fetus during pregnancy
    A. 1 only
    B. 2 & 3
    C. 3 only
    D. 2 only
    B. 2 & 3
    (this multiple choice question has been scrambled)

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