Relias Dysrhythmia Basic A – 300
Questions – 2026/2027 Complete
Practice Test
Graded A+ – Pass Guaranteed
Instant PDF Download
300 real exam-style questions · Full rationales · Why wrong explanations · 2026/2027 updated
Written by CardiacRN, DNP – 18 years Critical Care & Telemetry Educator
Relias Dysrhythmia Basic A: 100% | Verified: 2026/2027 Academic Year
Description
This comprehensive Relias Dysrhythmia Basic A exam review contains 300 practice questions that mirror the actual
Relias exam in content, difficulty, and structure. Each question is paired with a verified correct answer, a detailed
rationale, and a "Why Wrong" breakdown for every incorrect option. Updated for the 2026/2027 academic year, this
guide is designed to help nursing professionals achieve a high score and pass the Relias Dysrhythmia Basic A exam
with confidence.
Topics Covered
Normal Sinus Rhythm & Sinus Arrhythmias
Atrial Arrhythmias (PAC, AFib, AFlutter, SVT)
Junctional Rhythms
Ventricular Arrhythmias (PVC, VT, VF, Torsades)
Heart Blocks (1st, 2nd Type I & II, 3rd Degree)
Normal Sinus & Sinus Arrhythmias (50 questions)
,Q1. A patient's ECG shows a regular rhythm with a rate of 68 bpm, a normal P wave
preceding each QRS, a PR interval of 0.16 seconds, and a QRS duration of 0.10 seconds.
What is the most likely rhythm?
A Normal Sinus Rhythm
B Sinus Bradycardia
C Sinus Tachycardia
D First-Degree AV Block
Correct answer: A. Normal Sinus Rhythm
Rationale: Normal Sinus Rhythm is defined by: rate 60-100 bpm, regular rhythm, normal
P waves (upright in lead II), PR interval 0.12-0.20 seconds, and QRS duration <0.12
seconds.
Why wrong:
B: Sinus Bradycardia is rate <60 bpm.
C: Sinus Tachycardia is rate >100 bpm.
D: First-Degree AV Block requires PR >0.20 seconds.
Reference: Relias Dysrhythmia Basic A · ACLS Guidelines · AHA EKG Interpretation.
Q2. A patient's ECG shows a regular rhythm with a rate of 48 bpm, normal P waves
preceding each QRS, and a PR interval of 0.18 seconds. What is the most likely rhythm?
A Sinus Bradycardia
B Normal Sinus Rhythm
C Sinus Tachycardia
D First-Degree AV Block
Correct answer: A. Sinus Bradycardia
Rationale: Sinus Bradycardia is defined as a sinus rhythm with a rate less than 60 bpm.
Why wrong:
B: Normal Sinus Rhythm requires rate 60-100 bpm.
C: Sinus Tachycardia is rate >100 bpm.
D: First-Degree AV Block requires PR >0.20 seconds.
Reference: Relias Dysrhythmia Basic A · ACLS Guidelines · AHA EKG Interpretation.
,Q3. A patient's ECG shows a regular rhythm with a rate of 120 bpm, normal P waves
preceding each QRS, and a PR interval of 0.14 seconds. What is the most likely rhythm?
A Sinus Tachycardia
B Normal Sinus Rhythm
C Supraventricular Tachycardia (SVT)
D Atrial Flutter
Correct answer: A. Sinus Tachycardia
Rationale: Sinus Tachycardia is defined as a sinus rhythm with a rate >100 bpm.
Why wrong:
B: Normal Sinus Rhythm requires rate 60-100 bpm.
C: SVT has no discernible P waves.
D: Atrial Flutter has sawtooth flutter waves.
Reference: Relias Dysrhythmia Basic A · ACLS Guidelines · AHA EKG Interpretation.
Q4. A patient's ECG shows an irregular rhythm with a rate that varies between 60-90
bpm. The P waves are normal and precede each QRS, but the rhythm is irregularly
irregular. What is the most likely rhythm?
A Sinus Arrhythmia
B Atrial Fibrillation
C Atrial Flutter
D Premature Atrial Contractions (PACs)
Correct answer: A. Sinus Arrhythmia
Rationale: Sinus Arrhythmia is characterized by an irregular rhythm that varies with
respiration.
Why wrong:
B: Atrial Fibrillation has no discernible P waves.
C: Atrial Flutter has sawtooth flutter waves.
D: PACs have early P waves.
Reference: Relias Dysrhythmia Basic A · ACLS Guidelines · AHA EKG Interpretation.
, Q5. A patient's ECG shows a regular rhythm with a rate of 70 bpm. There is a sudden
pause in the rhythm for 2.5 seconds, followed by a return to the previous rhythm. What
is the most likely rhythm?
A Sinus Arrest (Sinus Pause)
B Normal Sinus Rhythm
C Sinus Bradycardia
D Second-Degree AV Block Type II
Correct answer: A. Sinus Arrest (Sinus Pause)
Rationale: Sinus Arrest is characterized by a sudden pause in the sinus rhythm, with no P
waves for >2 seconds.
Why wrong:
B: Normal Sinus Rhythm has no pauses.
C: Sinus Bradycardia is rate <60.
D: Type II has dropped QRS complexes.
Reference: Relias Dysrhythmia Basic A · ACLS Guidelines · AHA EKG Interpretation.
Q6. A patient's ECG shows a regular rhythm with a rate of 55 bpm, normal P waves
preceding each QRS, and a PR interval of 0.20 seconds. What is the most likely rhythm?
A Sinus Bradycardia
B Normal Sinus Rhythm
C First-Degree AV Block
D Junctional Rhythm
Correct answer: A. Sinus Bradycardia
Rationale: Sinus Bradycardia is defined as a sinus rhythm with a rate less than 60 bpm.
Why wrong:
B: Normal Sinus Rhythm requires rate 60-100 bpm.
C: First-Degree AV Block requires PR >0.20 seconds.
D: Junctional Rhythm has no P wave or inverted P wave.
Reference: Relias Dysrhythmia Basic A · ACLS Guidelines · AHA EKG Interpretation.
Questions – 2026/2027 Complete
Practice Test
Graded A+ – Pass Guaranteed
Instant PDF Download
300 real exam-style questions · Full rationales · Why wrong explanations · 2026/2027 updated
Written by CardiacRN, DNP – 18 years Critical Care & Telemetry Educator
Relias Dysrhythmia Basic A: 100% | Verified: 2026/2027 Academic Year
Description
This comprehensive Relias Dysrhythmia Basic A exam review contains 300 practice questions that mirror the actual
Relias exam in content, difficulty, and structure. Each question is paired with a verified correct answer, a detailed
rationale, and a "Why Wrong" breakdown for every incorrect option. Updated for the 2026/2027 academic year, this
guide is designed to help nursing professionals achieve a high score and pass the Relias Dysrhythmia Basic A exam
with confidence.
Topics Covered
Normal Sinus Rhythm & Sinus Arrhythmias
Atrial Arrhythmias (PAC, AFib, AFlutter, SVT)
Junctional Rhythms
Ventricular Arrhythmias (PVC, VT, VF, Torsades)
Heart Blocks (1st, 2nd Type I & II, 3rd Degree)
Normal Sinus & Sinus Arrhythmias (50 questions)
,Q1. A patient's ECG shows a regular rhythm with a rate of 68 bpm, a normal P wave
preceding each QRS, a PR interval of 0.16 seconds, and a QRS duration of 0.10 seconds.
What is the most likely rhythm?
A Normal Sinus Rhythm
B Sinus Bradycardia
C Sinus Tachycardia
D First-Degree AV Block
Correct answer: A. Normal Sinus Rhythm
Rationale: Normal Sinus Rhythm is defined by: rate 60-100 bpm, regular rhythm, normal
P waves (upright in lead II), PR interval 0.12-0.20 seconds, and QRS duration <0.12
seconds.
Why wrong:
B: Sinus Bradycardia is rate <60 bpm.
C: Sinus Tachycardia is rate >100 bpm.
D: First-Degree AV Block requires PR >0.20 seconds.
Reference: Relias Dysrhythmia Basic A · ACLS Guidelines · AHA EKG Interpretation.
Q2. A patient's ECG shows a regular rhythm with a rate of 48 bpm, normal P waves
preceding each QRS, and a PR interval of 0.18 seconds. What is the most likely rhythm?
A Sinus Bradycardia
B Normal Sinus Rhythm
C Sinus Tachycardia
D First-Degree AV Block
Correct answer: A. Sinus Bradycardia
Rationale: Sinus Bradycardia is defined as a sinus rhythm with a rate less than 60 bpm.
Why wrong:
B: Normal Sinus Rhythm requires rate 60-100 bpm.
C: Sinus Tachycardia is rate >100 bpm.
D: First-Degree AV Block requires PR >0.20 seconds.
Reference: Relias Dysrhythmia Basic A · ACLS Guidelines · AHA EKG Interpretation.
,Q3. A patient's ECG shows a regular rhythm with a rate of 120 bpm, normal P waves
preceding each QRS, and a PR interval of 0.14 seconds. What is the most likely rhythm?
A Sinus Tachycardia
B Normal Sinus Rhythm
C Supraventricular Tachycardia (SVT)
D Atrial Flutter
Correct answer: A. Sinus Tachycardia
Rationale: Sinus Tachycardia is defined as a sinus rhythm with a rate >100 bpm.
Why wrong:
B: Normal Sinus Rhythm requires rate 60-100 bpm.
C: SVT has no discernible P waves.
D: Atrial Flutter has sawtooth flutter waves.
Reference: Relias Dysrhythmia Basic A · ACLS Guidelines · AHA EKG Interpretation.
Q4. A patient's ECG shows an irregular rhythm with a rate that varies between 60-90
bpm. The P waves are normal and precede each QRS, but the rhythm is irregularly
irregular. What is the most likely rhythm?
A Sinus Arrhythmia
B Atrial Fibrillation
C Atrial Flutter
D Premature Atrial Contractions (PACs)
Correct answer: A. Sinus Arrhythmia
Rationale: Sinus Arrhythmia is characterized by an irregular rhythm that varies with
respiration.
Why wrong:
B: Atrial Fibrillation has no discernible P waves.
C: Atrial Flutter has sawtooth flutter waves.
D: PACs have early P waves.
Reference: Relias Dysrhythmia Basic A · ACLS Guidelines · AHA EKG Interpretation.
, Q5. A patient's ECG shows a regular rhythm with a rate of 70 bpm. There is a sudden
pause in the rhythm for 2.5 seconds, followed by a return to the previous rhythm. What
is the most likely rhythm?
A Sinus Arrest (Sinus Pause)
B Normal Sinus Rhythm
C Sinus Bradycardia
D Second-Degree AV Block Type II
Correct answer: A. Sinus Arrest (Sinus Pause)
Rationale: Sinus Arrest is characterized by a sudden pause in the sinus rhythm, with no P
waves for >2 seconds.
Why wrong:
B: Normal Sinus Rhythm has no pauses.
C: Sinus Bradycardia is rate <60.
D: Type II has dropped QRS complexes.
Reference: Relias Dysrhythmia Basic A · ACLS Guidelines · AHA EKG Interpretation.
Q6. A patient's ECG shows a regular rhythm with a rate of 55 bpm, normal P waves
preceding each QRS, and a PR interval of 0.20 seconds. What is the most likely rhythm?
A Sinus Bradycardia
B Normal Sinus Rhythm
C First-Degree AV Block
D Junctional Rhythm
Correct answer: A. Sinus Bradycardia
Rationale: Sinus Bradycardia is defined as a sinus rhythm with a rate less than 60 bpm.
Why wrong:
B: Normal Sinus Rhythm requires rate 60-100 bpm.
C: First-Degree AV Block requires PR >0.20 seconds.
D: Junctional Rhythm has no P wave or inverted P wave.
Reference: Relias Dysrhythmia Basic A · ACLS Guidelines · AHA EKG Interpretation.
