Question 1
Which structure is normally the dominant pacemaker of the heart in a healthy adult at rest?
Correct Answer:
Sinoatrial (SA) node
Question 2
What is the intrinsic firing rate of the AV junction when it acts as an escape pacemaker?
Correct Answer:
40-60 bpm
Question 3
Which phase of the cardiac action potential corresponds to the absolute refractory period when the cell cannot be re-stimulated regardless of stimulus strength?
Correct Answer:
Phase 0 (depolarization) through early phase 3
Question 4
Sympathetic nervous system stimulation of the heart primarily produces which effect on conduction and rate?
Correct Answer:
Increased SA node firing and faster AV conduction
Question 5
On standard ECG paper running at 25 mm/s, one small (1 mm) box represents how much time?
Correct Answer:
0.04 seconds
Question 1
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About this Exam

Prepare with the CRAT Practice Questions - Certified Rhythm Analysis Technician Exam practice quiz. This question bank includes 100 questions covering rhythm, patient, waves, strip, and telemetry. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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CRAT Practice Questions - Certified Rhythm Analysis Technician Exam

This practice set contains 100 questions from the matching question bank and focuses on rhythm, patient, waves, strip, and telemetry. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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