CRAT Practice Exam 2025 – Complete Guide for Test Preparation

Question: 1 / 400

What is the rhythm shown on this strip that displays a flat line?

Asystole

The rhythm shown on a strip that displays a flat line is identified as asystole. Asystole indicates a state of cardiac arrest where there is no electrical activity in the heart, leading to the absence of any heartbeats or visible rhythms on the electrocardiogram (ECG). This flat line is crucial in emergency situations, as it signifies that the heart is not pumping blood and immediate intervention is needed to attempt to restore a functional rhythm.

Understanding asystole is important for recognizing the need for advanced cardiac life support (ACLS) measures in clinical practice. Other rhythms such as atrial fibrillation, AV dissociation, or ventricular fibrillation would present with distinct patterns or chaotic electrical activity on an ECG strip rather than a flat line characteristic of asystole. This distinction is critical for correct diagnosis and management of cardiac events.

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Atrial fibrillation

AV dissociation

Ventricular fibrillation

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