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CLINICAL APPLICATION OF
PERFUSION EXAM QUEST IONS
LATEST UPDATE EXAM 1 50
QUESTIONS AND 100% VERIFIED
CORRECT ANSWERS
GUARANTEED A+
Question 1: What are cannulation sites for an LVAD?
CORRECT ANSWER: Pulmonary Vein and Aorta
Question 2: What is the minimum pressure for an LVAD
inflow, before you are at risk for drawing air?
CORRECT ANSWER: 5 mmHg
Question 3: Correction for cannula entrapment in LVAD's
can be accomplished by doing what?
CORRECT ANSWER: increasing the left atrial preload
(decreasing flow) --> Cannula is sucking down in the LVAD inflow either in the pulm vein, lv apex, or just below crossing the aortic valve.
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Question 4: What is the indication that indicates to add an
RVAD?
CORRECT ANSWER: Right atrial pressure >20 mmHg
with IABP and inotropic support
Question 5: Cannulation sites for RVAD support?
CORRECT ANSWER: Right atrium and pulmonary
artery.
Question 6: Which would not be an important
consideration in cannula selection?
- size B. Shape C. Cannula Circuit connector Size D.
Flow requirements
CORRECT ANSWER: C. Cannula Circuit Connector
Size
Question 7: Right Ventricular flow rates should be
adjusted in relation to what?
CORRECT ANSWER: Left ventricular flow rate.
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Question 8: In RVAD's, pump inflow cannula entrapment
is indicated by?
CORRECT ANSWER: snapping or chattering of the
line
Question 9: What action can correct RVAD cannula
entrapment?
CORRECT ANSWER: Increasing the right atrial
preload. (slow flow)
Question 10: When is heparin therapy to maintain
coagulation in VAD's usually started?
CORRECT ANSWER: Within 24 hours after initial
bleeding from surgery has been controlled. Sometimes patients will get protamine. ACT's should be between 150-200 seconds.
Question 11: When do patients diagnosed with atrial petal
defects become diagnosed in relation to Qp/Qs ratio?
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CORRECT ANSWER: 1:1.5
Question 12: What would normal urine output for a child
who weights 12 kg be? What is the standard for urine output in cardiac patients?
CORRECT ANSWER: ~20 ml/hour
In cardiac patients it is suggest that urine output should be .5-1.0 ml/kg/hour
Question 13: What is the estimated blood volume of a
child who weights 12 kg?
CORRECT ANSWER: 75 * 12= 900 ml
clinical manual of perfusion states that blood volume for a 11-20 kg child should be 80 ml/kg
Question 14: A 2 year old child weighting 12 kg is going
on bypass. Prebypas Hct is 40% and priming volume is 1200 ml what is the diluted hematocrit?
CORRECT ANSWER: ((1275)40)/((12*75)+1200)=
17.1%