Perfusion Basic science practice questions
and answers Graded A+ 2026
An advantage of continuous warm blood cardioplegia is - Correct answer-
Increased oxygen delivery
Intra-aortic balloon augmentation is contraindicated in pts with - Correct answer-
Aortic insufficiency
When using a roller pump, aortic dissection caused by the aortic cannula may be
detected by - Correct answer-Elevated arterial line pressure
The most significant advantage of venovenous ECMO over venoarterial ECMO is
- Correct answer-Unaffected pulmonary hemodynamics
The rate of water extraction using an ultrafiltration device is dependent upon -
Correct answer-1. Number, depth, and diameter of membrane pores
2.transmembrane pressure
3. Blood flow rate
When compared to trueembranes, hydrophobic microporous membrane
oxygenators may exhibit - Correct answer-Fluid passage into the gas compartment
,A low venous oxygen saturation may indicate - Correct answer-1. Increased
oxygen utilization
2. Inadequate pump output
3. Failure of the oxygenator to oxygenate the blood
Polyvinyl chloride tuning in the roller pump usually deteriorates by - Correct
answer-Cracking and breaking from the outer edge in
The theoretical advantage of blood cardioplegia over crystalloid is evidenced by -
Correct answer-1. Greater preservation of myocardial high energy phosphates
2. Greater myocardial oxygen utilization
3. Reduced cardiac enzyme release in the immediate post operative period
Activated factor X is the first step in which of the following coagulation stages -
Correct answer-Common pathway
Under normal physiological conditions, which organ has the lowest oxygen
consumption per unit weight - Correct answer-Kidney
The release of NE by the nerve impulses causes interaction with - Correct answer-
Alpha receptors
In a pt with chronic hypoxic condition, the oxyhemoglobin dissociation curve is
shifted to the right by - Correct answer-Increased 2,3 DPG levels
, The use of citrate phosphate dextrose (CPDA) blood in the perfusate affects what
parameter - Correct answer-Ionized calcium
Verapamil has actions similar to those of - Correct answer-Nifedipine
Anti-arrhythmic
Anti HTN
Dexamethasone is a potent, synthetic - Correct answer-Adrenocortical steroid
Deferoxamine (desferrioxamine) administered in large doses is a - Correct answer-
Hydroxyl radical scavenger
Iloprost is analog of - Correct answer-Prostacyclin
Tx HTN
With normal renal function, the half life of cephalexin is - Correct answer-1 hour
Cephalexin - Correct answer-Antibiotic
Treatment for blood transfusion reaction - Correct answer-Steroids
Diuretics
Heparin
and answers Graded A+ 2026
An advantage of continuous warm blood cardioplegia is - Correct answer-
Increased oxygen delivery
Intra-aortic balloon augmentation is contraindicated in pts with - Correct answer-
Aortic insufficiency
When using a roller pump, aortic dissection caused by the aortic cannula may be
detected by - Correct answer-Elevated arterial line pressure
The most significant advantage of venovenous ECMO over venoarterial ECMO is
- Correct answer-Unaffected pulmonary hemodynamics
The rate of water extraction using an ultrafiltration device is dependent upon -
Correct answer-1. Number, depth, and diameter of membrane pores
2.transmembrane pressure
3. Blood flow rate
When compared to trueembranes, hydrophobic microporous membrane
oxygenators may exhibit - Correct answer-Fluid passage into the gas compartment
,A low venous oxygen saturation may indicate - Correct answer-1. Increased
oxygen utilization
2. Inadequate pump output
3. Failure of the oxygenator to oxygenate the blood
Polyvinyl chloride tuning in the roller pump usually deteriorates by - Correct
answer-Cracking and breaking from the outer edge in
The theoretical advantage of blood cardioplegia over crystalloid is evidenced by -
Correct answer-1. Greater preservation of myocardial high energy phosphates
2. Greater myocardial oxygen utilization
3. Reduced cardiac enzyme release in the immediate post operative period
Activated factor X is the first step in which of the following coagulation stages -
Correct answer-Common pathway
Under normal physiological conditions, which organ has the lowest oxygen
consumption per unit weight - Correct answer-Kidney
The release of NE by the nerve impulses causes interaction with - Correct answer-
Alpha receptors
In a pt with chronic hypoxic condition, the oxyhemoglobin dissociation curve is
shifted to the right by - Correct answer-Increased 2,3 DPG levels
, The use of citrate phosphate dextrose (CPDA) blood in the perfusate affects what
parameter - Correct answer-Ionized calcium
Verapamil has actions similar to those of - Correct answer-Nifedipine
Anti-arrhythmic
Anti HTN
Dexamethasone is a potent, synthetic - Correct answer-Adrenocortical steroid
Deferoxamine (desferrioxamine) administered in large doses is a - Correct answer-
Hydroxyl radical scavenger
Iloprost is analog of - Correct answer-Prostacyclin
Tx HTN
With normal renal function, the half life of cephalexin is - Correct answer-1 hour
Cephalexin - Correct answer-Antibiotic
Treatment for blood transfusion reaction - Correct answer-Steroids
Diuretics
Heparin
