Free NTA Cardiac Arrhythmias Questions and Answers — Questions and Answers
Question 1: What is the most common type of cardiac arrhythmia?
- Ventricular fibrillation
- Atrial fibrillation (Correct answer)
- Bradycardia
- Supraventricular tachycardia
Correct answer: Atrial fibrillation
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?
- Normal heart function
- First-degree heart block (Correct answer)
- Ventricular tachycardia
- Atrial flutter
Correct answer: First-degree heart block
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?
- Atrial flutter
- Ventricular fibrillation (Correct answer)
- Sinus tachycardia
- Atrial fibrillation
Correct answer: Ventricular fibrillation
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)?
- Heart rate less than 60 bpm
- Rapid, regular rhythm originating from the ventricles (Correct answer)
- Irregular rhythm with a normal heart rate
- Slow rhythm with skipped beats
Correct answer: Rapid, regular rhythm originating from the ventricles
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?
- Atrial fibrillation
- Sinus bradycardia (Correct answer)
- Ventricular fibrillation
- Atrial flutter
Correct answer: Sinus bradycardia
Sinus bradycardia, a slower-than-normal heart rate, is often benign and can occur during sleep or in athletes.
Free NTA Cardiac Arrhythmias Questions and Answers
What is the most common type of cardiac arrhythmia?