Dysrhythmia Cardiac Rhythm Interpretation

Question 1

What is the defining characteristic of atrial fibrillation on an ECG?

Accepted Answer

Irregularly irregular rhythm with no P waves

Answer

Regular R-R intervals with distinct P waves

Answer

Sawtooth pattern P waves

Answer

Wide QRS complexes without P waves

Question 2

Which cardiac rhythm is characterized by a prolonged PR interval greater than 0.20 seconds?

Accepted Answer

First-degree AV Block

Answer

Atrial Flutter

Answer

Ventricular Tachycardia

Answer

Complete Heart Block

Question 3

What is the key ECG feature of ventricular tachycardia?

Accepted Answer

Wide QRS complexes with a fast rate

Answer

Narrow QRS complexes with P waves

Answer

Irregularly irregular rhythm

Answer

Slow heart rate with ST elevation

Question 4

Which rhythm is described by a sawtooth pattern of P waves on an ECG?

Accepted Answer

Atrial Flutter

Answer

Atrial Fibrillation

Answer

Sinus Tachycardia

Answer

Ventricular Fibrillation

Question 5

Which of the following rhythms is considered a medical emergency due to its lack of cardiac output?

Accepted Answer

Ventricular Fibrillation

Answer

Sinus Bradycardia

Answer

Atrial Flutter

Answer

First-degree AV Block

Question 6

Which rhythm is identified by a complete dissociation between P waves and QRS complexes?

Accepted Answer

Complete Heart Block

Answer

Second-degree AV Block Type 1

Answer

Second-degree AV Block Type 2

Answer

Sinus Arrhythmia