CPB CERTIFICATION FINAL TEST PAPER
2026 PREMIUM QUESTIONS AND
ACCURATE ANSWERS GRADED A+
● What machine is used during CPB? Answer: The heart lung machine
● What cannula diverts blood away from the heart during CPB?
Answer: Right atrial venous cannula
● What cannula returns blood to the patient during CPB? Answer:
Ascending aortic cannula or femoral artery cannula
● What happens to the lungs during CPB? Answer: They are ventilated
off, APL open, and become atelectatic
● What type of blood flow occurs during CPB? Answer: Non pulsatile
flow
● What happens to MAP during CPB? Answer: Usually lower than
normal
● Why is systemic hypothermia used during CPB? Answer: To
minimize neurologic and organ injury
, ● How is the heart protected during CPB? Answer: Cardioplegia and
topical hypothermia arrest electrical and mechanical activity
● Who operates the CPB machine? Answer: A certified perfusionist
● What are the six basic components of the CPB circuit? Answer:
Venous reservoir, oxygenator, heat exchanger, main pump, arterial filter,
and tubing
● What components are combined in modern CPB circuits? Answer:
Reservoir, oxygenator, and heat exchanger in a single disposable unit
● What accessory pumps are used during CPB? Answer: Cardiotomy
suction, LV vent, and cardioplegia pump
● How much fluid is used to prime an adult CPB circuit? Answer:
Approximately 1200 to 1800 mL
● What solutions are commonly used in the CPB prime? Answer: LR,
colloid, mannitol, heparin, and bicarbonate
● What happens to hematocrit at the onset of CPB? Answer:
Hemodilution decreases Hct to about 22 to 27 percent
2026 PREMIUM QUESTIONS AND
ACCURATE ANSWERS GRADED A+
● What machine is used during CPB? Answer: The heart lung machine
● What cannula diverts blood away from the heart during CPB?
Answer: Right atrial venous cannula
● What cannula returns blood to the patient during CPB? Answer:
Ascending aortic cannula or femoral artery cannula
● What happens to the lungs during CPB? Answer: They are ventilated
off, APL open, and become atelectatic
● What type of blood flow occurs during CPB? Answer: Non pulsatile
flow
● What happens to MAP during CPB? Answer: Usually lower than
normal
● Why is systemic hypothermia used during CPB? Answer: To
minimize neurologic and organ injury
, ● How is the heart protected during CPB? Answer: Cardioplegia and
topical hypothermia arrest electrical and mechanical activity
● Who operates the CPB machine? Answer: A certified perfusionist
● What are the six basic components of the CPB circuit? Answer:
Venous reservoir, oxygenator, heat exchanger, main pump, arterial filter,
and tubing
● What components are combined in modern CPB circuits? Answer:
Reservoir, oxygenator, and heat exchanger in a single disposable unit
● What accessory pumps are used during CPB? Answer: Cardiotomy
suction, LV vent, and cardioplegia pump
● How much fluid is used to prime an adult CPB circuit? Answer:
Approximately 1200 to 1800 mL
● What solutions are commonly used in the CPB prime? Answer: LR,
colloid, mannitol, heparin, and bicarbonate
● What happens to hematocrit at the onset of CPB? Answer:
Hemodilution decreases Hct to about 22 to 27 percent
