CVP Hemodynamics and Monitoring 2

Question 1

What is the significance of the pressure gradient across the oxygenator?

Accepted Answer

A rising gradient suggests clot formation or fiber damage within the oxygenator

Answer

Increasing pressure across the oxygenator suggests obstruction from clot formation, fibrin deposition, or membrane damage, potentially requiring oxygenator replacement.

Question 2

What is pump flow rate and how is it determined?

Accepted Answer

The volume of blood delivered per minute, calculated based on body surface area and desired cardiac index

Answer

Pump flow rate is individualized based on the patients body surface area to achieve an appropriate cardiac index, typically 2.2-2.4 L/min/m².

Question 3

What is the purpose of in-line blood gas monitoring during bypass?

Accepted Answer

Continuous real-time measurement of blood gases, pH, and electrolytes for immediate adjustments

Answer

In-line monitoring provides continuous, real-time blood gas data allowing the perfusionist to make immediate adjustments to ventilation and perfusion parameters.

Question 4

What is the significance of urine output during cardiopulmonary bypass?

Accepted Answer

It reflects renal perfusion adequacy; low output may indicate insufficient kidney blood flow

Answer

Adequate urine output suggests the kidneys are receiving sufficient blood flow. Decreased output may signal inadequate perfusion or renal compromise.

Question 5

What is a perfusion emergency known as massive air embolism?

Accepted Answer

Introduction of a large volume of air into the patients arterial system through the bypass circuit

Answer

Massive air embolism is a catastrophic event where air enters the patients arterial system, potentially causing stroke, organ damage, or death.

(CVP) Cardiovascular Perfusionist Practice Test

(CVP) Cardiovascular Perfusionist Practice Test

CVP Hemodynamics and Monitoring 2