JBL EMT Practice Exam 2025 - Free EMT Practice Questions and Study Guide

Question: 1 / 400

Which of the following cardiac dysrhythmias has the greatest chance of deteriorating into a pulseless rhythm?

Extra ventricular beats

Extra ventricular beats have the greatest chance of deteriorating into a pulseless rhythm because they can progress into more severe dysrhythmias such as ventricular tachycardia or ventricular fibrillation, which are both life-threatening and can lead to cardiac arrest. Sinus bradycardia and sinus tachycardia, while abnormal, do not necessarily indicate an immediate risk of deteriorating into a pulseless rhythm. Ventricular tachycardia itself is already a more serious dysrhythmia but does not pose as great a risk of deterioration compared to extra ventricular beats.

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Sinus bradycardia

Sinus tachycardia

Ventricular tachycardia

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