Prepare confidently for the Relias Dysrhythmia Basic A Exam 2025–2026 with a comprehensive study resource focused on ECG interpretation, cardiac rhythm identification, dysrhythmia recognition, and basic rhythm-management concepts. Current online listings for the 2025–2026 cycle describe resources ranging from 35 to 55+ practice questions and cover core rhythm-recognition skills.
The resource is designed to help nurses, nursing students, telemetry staff, paramedics, and other healthcare professionals strengthen their ability to systematically interpret rhythm strips, recognize normal and abnormal rhythms, and apply appropriate clinical reasoning.
KEY TOPICS COVERED
Normal Sinus Rhythm: Review rate, regularity, P waves, PR interval, QRS duration, and systematic ECG interpretation.
Sinus Bradycardia & Tachycardia: Practice distinguishing sinus rhythms based on rate and waveform characteristics.
Atrial Dysrhythmias: Review premature atrial contractions, atrial fibrillation, atrial flutter, and related ECG characteristics.
Junctional Rhythms: Identify junctional rhythm patterns and recognize characteristic P-wave and PR-interval changes.
Ventricular Dysrhythmias: Study premature ventricular contractions, ventricular tachycardia, ventricular fibrillation, and other important ventricular rhythms.
Heart Blocks: Review first-degree AV block, second-degree blocks, and third-degree/complete heart block.
ECG Measurements: Reinforce PR interval, QRS duration, QT considerations, rhythm regularity, and heart-rate calculation methods.
Pacemaker Rhythms: Review basic paced-rhythm recognition and characteristic pacing spikes.
Clinical Rhythm Interpretation: Practice using rate, rhythm, P waves, PR intervals, and QRS complexes systematically to identify cardiac rhythms.
WHY THIS STUDY RESOURCE IS USEFUL
2025–2026 exam-cycle preparation
Relias Dysrhythmia Basic A
ECG and rhythm-strip interpretation
Sinus, atrial, junctional, and ventricular rhythms
Heart-block recognition
Pacemaker-rhythm concepts
ECG measurement and rate calculations
Detailed answer explanations
Visual/illustration-based rhythm review
Useful for telemetry and nursing competency preparation
Online study resources for this exam specifically emphasize normal sinus rhythm, sinus bradycardia/tachycardia, PACs, atrial fibrillation, junctional rhythms, PVCs, heart blocks, and ECG measurements.
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Relias Dysrhythmia Basic A Exam 2025-2026
Detailed questions And Answers with
Illustrations
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
Atrial Fibrillation
IRREGULAR
Atrial rate: UNMEASURABLE
Ventricular rate: variable
P wave: unable to see
PR Interval: N/A
QRS: <0.12 sec
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
A fib RVR
IRREGULAR
Ventricular rate: 100-175
