CVP Technical Skills and Equipment Operation 3

Question 1

The primary purpose of the cardiotomy reservoir in a CPB circuit is to:

Accepted Answer

Collect and filter shed blood from the surgical field for reinfusion

Answer

Store priming solution before bypass

Answer

Provide a backup oxygenation source

Answer

Regulate venous line pressure

Question 2

When priming a CPB circuit, crystalloid prime is preferred over blood prime primarily because it:

Accepted Answer

Reduces exposure to allogeneic blood products and associated risks

Answer

Provides superior oxygen-carrying capacity

Answer

Eliminates the need for anticoagulation

Answer

Maintains higher colloid osmotic pressure

Question 3

A perfusionist observes plasma-colored urine turning pink during CPB. This most likely indicates:

Accepted Answer

Hemolysis with hemoglobinuria

Answer

Renal failure

Answer

Bladder injury from catheter

Answer

Myoglobinuria from muscle breakdown

Question 4

The recommended activated clotting time (ACT) target during standard cardiopulmonary bypass with unfractionated heparin is:

Accepted Answer

Greater than 400–480 seconds

Answer

Greater than 200–250 seconds

Answer

Greater than 150–180 seconds

Answer

Greater than 300–350 seconds

Question 5

Which component of the CPB circuit is responsible for eliminating carbon dioxide from the blood?

Accepted Answer

The membrane oxygenator via the sweep gas flow

Answer

The arterial line filter

Answer

The venous reservoir

Answer

The heat exchanger

Question 6

During hypothermic circulatory arrest, cerebral protection is primarily achieved by:

Accepted Answer

Reducing cerebral metabolic rate through deep hypothermia

Answer

Administering corticosteroids

Answer

Increasing systemic arterial pressure

Answer

Delivering retrograde coronary sinus perfusion

Question 7

A right-angle venous cannula placed in the right atrium is preferred over a straight cannula when:

Accepted Answer

Bicaval cannulation is required for open cardiac procedures

Answer

Minimizing circuit prime volume is the priority

Answer

Higher venous flow rates are needed quickly

Answer

Operating without a cardiotomy suction system