Free IBHRE Cardiac Electrophysiology Questions and Answers

Question 1

What is the primary function of the sinoatrial (SA) node in the heart?

Accepted Answer

To initiate and regulate the heart's electrical impulses

Answer

To conduct impulses from the atria to the ventricles

Answer

To delay impulses to allow ventricular filling

Answer

To control the contraction of the ventricles

Question 2

Which part of the heart’s conduction system is responsible for delaying the electrical impulse to allow the ventricles to fill with blood before they contract?

Accepted Answer

AV node

Answer

SA node

Answer

Bundle of His

Answer

Purkinje fibers

Question 3

Which of the following arrhythmias is most commonly associated with an accessory pathway, such as in Wolff-Parkinson-White (WPW) syndrome?

Accepted Answer

Supraventricular tachycardia (SVT)

Answer

Atrial flutter

Answer

Ventricular tachycardia

Answer

Sinus bradycardia

Question 4

Which electrophysiological test is used to identify and map the origin of arrhythmias in the heart?

Accepted Answer

Electrophysiology study (EPS)

Answer

Echocardiogram

Answer

Holter monitoring

Answer

Stress test

Question 5

In cardiac electrophysiology, what is an "ablation" procedure primarily used for?

Accepted Answer

To destroy or isolate areas of heart tissue that are causing abnormal electrical signals

Answer

To implant a pacemaker or defibrillator

Answer

To diagnose coronary artery disease

Answer

To monitor blood pressure