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

It indicates the patient is waking up

Answer

It shows anticoagulation is adequate

Answer

It has no clinical significance

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

A fixed rate for all patients

Answer

The rate of drug administration

Answer

The speed of blood gas analysis

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

To measure the flow rate

Answer

To count white blood cells

Answer

To assess blood viscosity

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

It has no clinical relevance during bypass

Answer

It only matters if the patient has kidney disease

Answer

It indicates fluid overload

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

A sudden increase in blood pressure

Answer

A drop in oxygen levels from the oxygenator

Answer

An allergic reaction to heparin

Question 6

What electrolyte imbalance is most concerning during bypass?

Accepted Answer

Hyperkalemia, which can cause cardiac arrhythmias

Answer

Low sodium levels

Answer

High calcium levels

Answer

Low chloride levels