Free NTA Cardiac Arrhythmias Questions and Answers

Question 1

What is the most common type of cardiac arrhythmia?

Accepted Answer

Atrial fibrillation

Answer

Atrial fibrillation (AFib) is the most common arrhythmia, characterized by irregular and often rapid heart rhythm.

Question 2

What does a prolonged PR interval indicate on an ECG?

Accepted Answer

First-degree heart block

Answer

A prolonged PR interval (>0.20 seconds) is indicative of delayed conduction between the atria and ventricles.

Question 3

Which arrhythmia is life-threatening and requires immediate defibrillation?

Accepted Answer

Ventricular fibrillation

Answer

Ventricular fibrillation is a chaotic and ineffective rhythm that prevents proper blood circulation and can lead to sudden cardiac arrest.

Question 4

What is the defining characteristic of ventricular tachycardia (VT)?

Accepted Answer

Rapid, regular rhythm originating from the ventricles

Answer

VT is a fast, regular rhythm that can compromise cardiac output and lead to ventricular fibrillation if untreated.

Question 5

Which of the following arrhythmias is often seen in healthy individuals during sleep?

Accepted Answer

Sinus bradycardia

Answer

Sinus bradycardia, a slower-than-normal heart rate, is often benign and can occur during sleep or in athletes.

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