Clinical Application of Perfusion Exam
Questions and Answers
What are cannulation sites for an LVAD? - Correct Answers ✅Pulmonary
Vein and Aorta
What is the minimum pressure for an LVAD inflow, before you are at risk for
drawing air? - Correct Answers ✅5 mmHg
Correction for cannula entrapment in LVAD's can be accomplished by doing
what? - Correct Answers ✅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.
What is the indication that indicates to add an RVAD? - Correct Answers
✅Right atrial pressure >20 mmHg with IABP and inotropic support
Cannulation sites for RVAD support? - Correct Answers ✅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 -
Correct Answers ✅C. Cannula Circuit Connector Size
Right Ventricular flow rates should be adjusted in relation to what? - Correct
Answers ✅Left ventricular flow rate.
In RVAD's, pump inflow cannula entrapment is indicated by? - Correct
Answers ✅snapping or chattering of the line
What action can correct RVAD cannula entrapment? - Correct Answers
✅Increasing the right atrial preload. (slow flow)
,Clinical Application of Perfusion Exam
Questions and Answers
When is heparin therapy to maintain coagulation in VAD's usually started? -
Correct Answers ✅Within 24 hours after initial bleeding from surgery has
been controlled. Sometimes patients will get protamine. ACT's should be
between 150-200 seconds.
When do patients diagnosed with atrial petal defects become diagnosed in
relation to Qp/Qs ratio? - Correct Answers ✅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? - Correct Answers ✅~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? - Correct
Answers ✅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? - Correct
Answers ✅((12*75)*40)/((12*75)+1200)= 17.1%
How is venous cannulation usually done in repair of an ASD? - Correct
Answers ✅bicaval cannulation
Upon going onto bypass pressure will drop in direct proportion to what? -
Correct Answers ✅viscosity
Flow=perf pressure/(vasc resistance x viscosity)
, Clinical Application of Perfusion Exam
Questions and Answers
Which of the following would most likely be used to treat hypotension on a
jehovah witness patient who requests no blood products be utilized.
a) aramine b) ephedrine c)neosynephrine d) regitine - Correct Answers
✅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 - Correct Answers
✅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. - Correct Answers ✅increase blood flow,
decrease sweep, give NaHCO3
What best characterizes cold agglutinin disease?
a) collagen vascular disease
b) serum antibody disease
c) bacterial infection
d) autosomal dominant trait - Correct Answers ✅B--> serum antibody
disease.
cold agglutinins is an auto immune disease
Clinical signs of cold agglutinins include
a) acute onset shivering
b)erythematous rash
c) Acrocyanosis of the digits
d) piloerection - Correct Answers ✅c) acrocyanosis of the digits
piloerection is hair standing up on arms and legs. stupid trick answer.
Questions and Answers
What are cannulation sites for an LVAD? - Correct Answers ✅Pulmonary
Vein and Aorta
What is the minimum pressure for an LVAD inflow, before you are at risk for
drawing air? - Correct Answers ✅5 mmHg
Correction for cannula entrapment in LVAD's can be accomplished by doing
what? - Correct Answers ✅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.
What is the indication that indicates to add an RVAD? - Correct Answers
✅Right atrial pressure >20 mmHg with IABP and inotropic support
Cannulation sites for RVAD support? - Correct Answers ✅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 -
Correct Answers ✅C. Cannula Circuit Connector Size
Right Ventricular flow rates should be adjusted in relation to what? - Correct
Answers ✅Left ventricular flow rate.
In RVAD's, pump inflow cannula entrapment is indicated by? - Correct
Answers ✅snapping or chattering of the line
What action can correct RVAD cannula entrapment? - Correct Answers
✅Increasing the right atrial preload. (slow flow)
,Clinical Application of Perfusion Exam
Questions and Answers
When is heparin therapy to maintain coagulation in VAD's usually started? -
Correct Answers ✅Within 24 hours after initial bleeding from surgery has
been controlled. Sometimes patients will get protamine. ACT's should be
between 150-200 seconds.
When do patients diagnosed with atrial petal defects become diagnosed in
relation to Qp/Qs ratio? - Correct Answers ✅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? - Correct Answers ✅~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? - Correct
Answers ✅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? - Correct
Answers ✅((12*75)*40)/((12*75)+1200)= 17.1%
How is venous cannulation usually done in repair of an ASD? - Correct
Answers ✅bicaval cannulation
Upon going onto bypass pressure will drop in direct proportion to what? -
Correct Answers ✅viscosity
Flow=perf pressure/(vasc resistance x viscosity)
, Clinical Application of Perfusion Exam
Questions and Answers
Which of the following would most likely be used to treat hypotension on a
jehovah witness patient who requests no blood products be utilized.
a) aramine b) ephedrine c)neosynephrine d) regitine - Correct Answers
✅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 - Correct Answers
✅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. - Correct Answers ✅increase blood flow,
decrease sweep, give NaHCO3
What best characterizes cold agglutinin disease?
a) collagen vascular disease
b) serum antibody disease
c) bacterial infection
d) autosomal dominant trait - Correct Answers ✅B--> serum antibody
disease.
cold agglutinins is an auto immune disease
Clinical signs of cold agglutinins include
a) acute onset shivering
b)erythematous rash
c) Acrocyanosis of the digits
d) piloerection - Correct Answers ✅c) acrocyanosis of the digits
piloerection is hair standing up on arms and legs. stupid trick answer.
