Relias Dysrhythmia Basic A Exam 2025–2026 | Practice Questions & Correct Answers with Illustrations | Nursing ECG Rhythm Interpretation

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 m9




P Wave: Present, upright
m9 m9 m9




m9 PR Interval: 0.12-0.20
m9 m9




sec QRS: <0.12 sec
m9 m9 m9 m9




Sinus Bradycardia
m9




Regular

m9 Rate:

<60
m9




P Wave: Present, upright
m9 m9 m9




m9 PR Interval: 0.12-0.20
m9 m9




sec QRS: <0.12 sec
m9 m9 m9 m9




A fib RVR
m9 m9




IRREGULAR

Ventricular rate: 100-175 m9 m9