CVP Technical Skills and Equipment Operation 2

Question 1

When setting up a centrifugal pump head for cardiopulmonary bypass, which parameter is the primary determinant of flow output?

Accepted Answer

Revolutions per minute (RPM)

Answer

Centrifugal pump flow is primarily determined by RPM, though it is also influenced by preload and afterload conditions.

Question 2

During cardiopulmonary bypass, a sudden rise in arterial line pressure with no change in pump flow most likely indicates:

Accepted Answer

Aortic dissection or cannula obstruction

Answer

A sudden increase in arterial line pressure with stable flow suggests outflow obstruction such as aortic dissection or a kinked/obstructed arterial cannula.

Question 3

Which type of oxygenator design is exclusively used in modern clinical cardiopulmonary bypass circuits?

Accepted Answer

Hollow-fiber membrane oxygenator

Answer

Hollow-fiber membrane oxygenators have replaced all other designs in modern clinical practice due to superior biocompatibility and gas transfer efficiency.

Question 4

A perfusionist notices the venous reservoir level is dropping rapidly despite adequate venous return. The most immediate action is to:

Accepted Answer

Reduce pump flow to prevent air entrainment

Answer

Reducing pump flow prevents the reservoir from emptying and air from entering the arterial line, which is the most immediate life-threatening risk.

Question 5

The purpose of an arterial line filter in a CPB circuit is to:

Accepted Answer

Remove microemboli and gaseous emboli before they reach the patient

Answer

Arterial line filters trap particulate matter and gaseous microemboli, protecting the patient from embolic events during bypass.

(CVP) Cardiovascular Perfusionist Practice Test

(CVP) Cardiovascular Perfusionist Practice Test

CVP Technical Skills and Equipment Operation 2