Registered Cardiovascular Invasive Specialist (RCIS) Practice Test

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Prepare for the Registered Cardiovascular Invasive Specialist Test with detailed quizzes, flashcards, and explanations for each question. Equip yourself for exam success!

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What is the normal range for the PR interval on an EKG?

.08-.12 seconds
.12-.20 seconds
.20-.28 seconds
.28-.40 seconds

The correct answer is: .12-.20 seconds

The normal range for the PR interval on an EKG is indeed .12 to .20 seconds. This interval measures the time taken for electrical impulses to travel from the atria to the ventricles of the heart. An interval within this range indicates normal conduction through the atrioventricular (AV) node, reflecting healthy heart function. If the PR interval is shorter than .12 seconds, it may suggest a rapid conduction pathway, while an interval longer than .20 seconds can indicate a delay in conduction, known as first-degree heart block. Understanding the significance of each range helps in diagnosing potential cardiac issues effectively.