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Relias Dysrhythmia Basic A Study Guide 2026–2027 | ECG & Cardiac Rhythm Practice Questions & Verified Answers | Complete Nursing Exam Prep

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Institution Relias Dysrhythmia Basic A
Module Relias Dysrhythmia Basic A
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Prepare for Relias Dysrhythmia Basic A assessments with this comprehensive cardiac rhythm and ECG interpretation study guide. This exam prep resource is designed to reinforce essential dysrhythmia concepts, including cardiac anatomy and electrophysiology, the cardiac conduction system, ECG components, rhythm identification, heart rate calculation, atrial and ventricular dysrhythmias, heart blocks, conduction abnormalities, rhythm interpretation, and appropriate nursing responses. Ideal for registered nurses, LPN/LVNs, nursing students, telemetry nurses, critical care professionals, and healthcare staff completing cardiac rhythm training and competency assessments. Designed to strengthen ECG interpretation skills, improve clinical judgment, reinforce cardiac monitoring knowledge, and increase confidence on dysrhythmia examinations.

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Relias Dysrhythmia Basic A Study Guide
Normal sinus rhythm Regular
Rate: 60-100
P Wave: Present, upright
PR Interval: 0.12-0.20 sec
QRS: <0.12 sec




Sinus Bradycardia Regular
Rate: <60
P Wave: Present, upright
PR Interval: 0.12-0.20 sec
QRS: <0.12 sec




Sinus Tachycardia Regular
Rate: 100-150
P Wave: Present, upright
PR Interval: 0.12-0.20 sec
QRS: <0.12 sec




Premature Atrial Contraction IRREGULAR
Rate: depends on underlying rhythm
P wave: Present or hidden in T wave
PR Interval: 0.12-0.20 sec
QRS: <0.12 sec

, Relias Dysrhythmia Basic A Study Guide
Atrial Fibrillation IRREGULAR
Atrial rate: UNMEASURABLE
Ventricular rate: variable
P wave: unable to see
PR Interval: N/A
QRS: <0.12 sec




A fib RVR IRREGULAR
Ventricular rate: 100-175
P wave: unable to see
PR Interval: N/A
QRS <0.12 sec




Atrial Flutter Usually REGULAR can be irregular
Atrial rate: 250-350
Ventricular rate: variable BUT < atrial rate
P Wave: Flutter
PR Interval: N/A
QRS: <0.12 sec




Supraventricular Tachycardia Regular
Rate: 150-350
P wave: Hidden in QRS or T wave
PR: unable to determine
QRS: <0.12 sec




Junctional Rhythm Regular
Rate: 40-60
P Wave: ABSENT or INVERTED
PR Interval: None or <0.12
QRS: <0.12 sec

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  • relias dysrhythmia basic a study guide
  • relias dysrhythmia basic a practice questions
  • dysrhythmia basic a exam questions answers
  • ecg rhythm interpretation nursing exam prep
  • cardiac dysrhythmia practic

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