Perfusion Equipment & Technology Operation Flashcards
7 cards from real CCP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Perfusion Equipment & Technology Operation flashcards as text
Which oxygenator design uses a microporous polypropylene membrane to facilitate gas exchange?
Answer: Hollow fiber membrane oxygenator
Hollow fiber membrane oxygenators use microporous polypropylene fibers to allow gas exchange while minimizing blood-gas direct contact.
What is the primary purpose of the arterial line filter in a cardiopulmonary bypass circuit?
Answer: Remove gaseous and particulate microemboli from the arterial outflow
The arterial line filter captures gaseous and particulate emboli in the final arterial line segment before blood is returned to the patient.
During CPB, the heat exchanger functions to:
Answer: Cool or warm blood to achieve desired patient temperature
The heat exchanger modulates blood temperature by circulating water at a controlled temperature around the blood path, enabling cooling or rewarming.
A perfusionist notices the oxygenator inlet pressure is significantly elevated above normal. The MOST likely cause is:
Answer: Arterial line obstruction distal to the oxygenator
Elevated oxygenator inlet pressure typically indicates obstruction in the arterial circuit distal to the oxygenator, such as a kinked or clamped arterial line.
What is the maximum safe water temperature recommended when rewarming patients using a heat exchanger?
Answer: 42°C
Water temperature should not exceed 42°C during rewarming to prevent thermal injury to blood proteins and neurological complications from excessive cerebral heating.
The priming volume of a CPB circuit is critically important because it affects:
Answer: Hemodilution and the patient's hematocrit during bypass
Priming volume dilutes the patient's blood upon initiation of bypass, directly impacting hematocrit and oxygen-carrying capacity throughout the procedure.
Which component of the CPB circuit is responsible for removing air that enters the venous line?
Answer: Hard-shell venous reservoir
The hard-shell venous reservoir acts as an air trap and defoaming chamber, preventing air from advancing into the pump and arterial circuit.