CCP Perfusion Equipment & Technology Operation 2

Question 1

Which oxygenator design uses a microporous polypropylene membrane to facilitate gas exchange?

Accepted Answer

Hollow fiber membrane oxygenator

Answer

Hollow fiber membrane oxygenators use microporous polypropylene fibers to allow gas exchange while minimizing blood-gas direct contact.

Question 2

What is the primary purpose of the arterial line filter in a cardiopulmonary bypass circuit?

Accepted Answer

Remove gaseous and particulate microemboli from the arterial outflow

Answer

The arterial line filter captures gaseous and particulate emboli in the final arterial line segment before blood is returned to the patient.

Question 3

During CPB, the heat exchanger functions to:

Accepted Answer

Cool or warm blood to achieve desired patient temperature

Answer

The heat exchanger modulates blood temperature by circulating water at a controlled temperature around the blood path, enabling cooling or rewarming.

Question 4

A perfusionist notices the oxygenator inlet pressure is significantly elevated above normal. The MOST likely cause is:

Accepted Answer

Arterial line obstruction distal to the oxygenator

Answer

Elevated oxygenator inlet pressure typically indicates obstruction in the arterial circuit distal to the oxygenator, such as a kinked or clamped arterial line.

Question 5

What is the maximum safe water temperature recommended when rewarming patients using a heat exchanger?

Accepted Answer

42°C

Answer

Water temperature should not exceed 42°C during rewarming to prevent thermal injury to blood proteins and neurological complications from excessive cerebral heating.

(CCP) Certified Clinical Perfusionist Practice Test

(CCP) Certified Clinical Perfusionist Practice Test

CCP Perfusion Equipment & Technology Operation 2