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Basic Dysrhythmia Course Exam Questions & Correct Answers PDF | ECG Interpretation & Cardiac Rhythm Study Guide

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2026/2027

Institution RELIAS DYSRHYTHMIA BASIC

Course RELIAS DYSRHYTHMIA BASIC

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Basic Dysrhythmia Course Exam Questions and Correct Answers PDF is a comprehensive cardiac nursing study resource designed to help healthcare professionals and nursing students review essential concepts in ECG interpretation, cardiac rhythms, and dysrhythmia recognition. This exam preparation material focuses on important cardiac topics including heart conduction, rhythm identification, electrocardiogram basics, arrhythmia characteristics, patient assessment, and nursing interventions related to cardiac monitoring.

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Basic Dysrhythmia Course Exam
Questions and Correct Answers
SA node - Correct Answer: the major pacemaker of the heart

60-100 - Correct Answer: inherent rate of the SA node

40-60 - Correct Answer: inherent rate of the AV node

20-40 - Correct Answer: inherent rate of the ventricles (purkinjie fibers)

systole - Correct Answer: phase of contraction

diastole - Correct Answer: phase of relaxation

p wave - Correct Answer: what does atrial depolarization show on the ECG?

QRS complex - Correct Answer: what does ventricle depolarization show on the ECG?

T wave - Correct Answer: what does repolarization show on the ECG?

increase - Correct Answer: what does sympathetic stimulation do to the heart rate?

decrease - Correct Answer: what does parasympathetic stimulation do to the heart rate?

absolute refractory period - Correct Answer: the period immediately following the firing of a nerve fiber
when it cannot be stimulated no matter how great a stimulus is applied

, relative refractory period - Correct Answer: during the ventricular cardiac cycle when all cardiac cells are
not fully repolarized and a strong enough stimulus can excite cardiac tissue and initiate arrhythmias

last half of t wave - Correct Answer: When is the relative refractory period of the ventricles?

.20 secs - Correct Answer: how much time is one large box in an ecg strip?

.04 secs - Correct Answer: how much time is one small box in an ecg strip?

0.12-0.20 - Correct Answer: normal range of PR interval

0.04-0.12 - Correct Answer: normal range of QRS complex

less than 1/2 the preceding R-R interval - Correct Answer: what is the normal time of the QT?

p to p - Correct Answer: how do you measure the atrial rate?

R to R - Correct Answer: how do you measure the ventricular rate?

sinus rhythm - Correct Answer:

sinus bradycardia - Correct Answer:

assess pt

atropine

pacing

IV, O2 - Correct Answer: tx for sinus bradycardia

sinus tachycardia - Correct Answer:

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Uploaded on: August 3, 2026
Number of pages: 10
Written in: 2026/2027
Type: Exam (elaborations)
Contains: Questions & answers

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