Clinical Application of Perfusion Exam Questions AND ANSWERS
2024-2025 | GRADED A+| GET IT CORRECT
What are cannulation sites for an LVAD? - (answer)Pulmonary Vein and Aorta
What is the minimum pressure for an LVAD inflow, before you are at risk for drawing air?
- (answer)5 mmHg
Correction for cannula entrapment in LVAD's can be accomplished by doing what? -
(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.
眼睛是人类最重要
What is the indication that indicates to add an RVAD? - (answer)Right atrial pressure >20
mmHg with IABP and inotropic support
Cannulation sites for RVAD support? - (answer)Right atrium and pulmonary artery.
Which would not be an important consideration in cannula selection?
A. size B. Shape C. Cannula Circuit connector Size D. Flow requirements - (answer)C.
Cannula Circuit Connector Size
Right Ventricular flow rates should be adjusted in relation to what? - (answer)Left
ventricular flow rate.
,In RVAD's, pump inflow cannula entrapment is indicated by? - (answer)snapping or
chattering of the line
What action can correct RVAD cannula entrapment? - (answer)Increasing the right atrial
preload. (slow flow)
When is heparin therapy to maintain coagulation in VAD's usually started? - (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.
眼睛是人类最重要
When do patients diagnosed with atrial petal defects become diagnosed in relation to Qp/Qs
ratio? - (answer)1:1.5
What would normal urine output for a child who weights 12 kg be? What is the standard
for urine output in cardiac patients? - (answer)~20 ml/hour
In cardiac patients it is suggest that urine output should be .5-1.0 ml/kg/hour
What is the estimated blood volume of a child who weights 12 kg? - (answer)75 * 12= 900
ml
clinical manual of perfusion states that blood volume for a 11-20 kg child should be 80
ml/kg
, 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? -
(answer)((12*75)*40)/((12*75)+1200)= 17.1%
How is venous cannulation usually done in repair of an ASD? - (answer)bicaval cannulation
Upon going onto bypass pressure will drop in direct proportion to what? - (answer)viscosity
Flow=perf pressure/(vasc resistance x viscosity)
Which of the following would most likely be used to treat hypotension on a jehovah witness
patient who requests no blood products be utilized.
眼睛是人类最重要
a) aramine b) ephedrine c)neosynephrine d) regitine - (answer)C. neosynephrine
(phenylephrine)
2 yr old 12 kg child is placed on complete bypass, when RA is opened large amount of
venous blood is present. What is the cause - (answer)Persistent left superior vena cava
During CPB arterial blood gas for 2 yr old 12 kg patient : pH 7.35, pO2 188 mmHg, pCO2
27 mmHg. - (answer)increase blood flow, decrease sweep, give NaHCO3
What best characterizes cold agglutinin disease?
a) collagen vascular disease
b) serum antibody disease
2024-2025 | GRADED A+| GET IT CORRECT
What are cannulation sites for an LVAD? - (answer)Pulmonary Vein and Aorta
What is the minimum pressure for an LVAD inflow, before you are at risk for drawing air?
- (answer)5 mmHg
Correction for cannula entrapment in LVAD's can be accomplished by doing what? -
(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.
眼睛是人类最重要
What is the indication that indicates to add an RVAD? - (answer)Right atrial pressure >20
mmHg with IABP and inotropic support
Cannulation sites for RVAD support? - (answer)Right atrium and pulmonary artery.
Which would not be an important consideration in cannula selection?
A. size B. Shape C. Cannula Circuit connector Size D. Flow requirements - (answer)C.
Cannula Circuit Connector Size
Right Ventricular flow rates should be adjusted in relation to what? - (answer)Left
ventricular flow rate.
,In RVAD's, pump inflow cannula entrapment is indicated by? - (answer)snapping or
chattering of the line
What action can correct RVAD cannula entrapment? - (answer)Increasing the right atrial
preload. (slow flow)
When is heparin therapy to maintain coagulation in VAD's usually started? - (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.
眼睛是人类最重要
When do patients diagnosed with atrial petal defects become diagnosed in relation to Qp/Qs
ratio? - (answer)1:1.5
What would normal urine output for a child who weights 12 kg be? What is the standard
for urine output in cardiac patients? - (answer)~20 ml/hour
In cardiac patients it is suggest that urine output should be .5-1.0 ml/kg/hour
What is the estimated blood volume of a child who weights 12 kg? - (answer)75 * 12= 900
ml
clinical manual of perfusion states that blood volume for a 11-20 kg child should be 80
ml/kg
, 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? -
(answer)((12*75)*40)/((12*75)+1200)= 17.1%
How is venous cannulation usually done in repair of an ASD? - (answer)bicaval cannulation
Upon going onto bypass pressure will drop in direct proportion to what? - (answer)viscosity
Flow=perf pressure/(vasc resistance x viscosity)
Which of the following would most likely be used to treat hypotension on a jehovah witness
patient who requests no blood products be utilized.
眼睛是人类最重要
a) aramine b) ephedrine c)neosynephrine d) regitine - (answer)C. neosynephrine
(phenylephrine)
2 yr old 12 kg child is placed on complete bypass, when RA is opened large amount of
venous blood is present. What is the cause - (answer)Persistent left superior vena cava
During CPB arterial blood gas for 2 yr old 12 kg patient : pH 7.35, pO2 188 mmHg, pCO2
27 mmHg. - (answer)increase blood flow, decrease sweep, give NaHCO3
What best characterizes cold agglutinin disease?
a) collagen vascular disease
b) serum antibody disease
