Relias Dysrhythmia Basic A Test | 2026/2027 Questions and
Answers Complete Certification Exam | Actual Questions &
Verified Answers | Rhythm Identification & Priority
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Section 1: Rhythm Identification & Analysis (Questions 1–25)
ECG Description: The rhythm strip shows a regular rhythm at 86 bpm. Each narrow QRS (0.08
s) is preceded by a uniform, upright P wave; PR interval is 0.18 s and constant. No ectopic or
dropped beats are seen.
What is the correct rhythm interpretation?
A. Normal sinus rhythm
B. Sinus bradycardia
C. Sinus tachycardia
D. First-degree AV block
Correct Answer: A
Rationale: Rate 60–100 bpm with all normal intervals and every P followed by a QRS = normal
sinus rhythm. PR is <0.20 s, so not 1° block.
ECG Description: Regular rhythm, rate 48 bpm. P waves upright and identical, PR 0.16 s, QRS
0.08 s. No ectopy.
What is the rhythm?
A. Sinus bradycardia
B. Idioventricular rhythm
C. First-degree AV block
D. Sinus arrhythmia
Correct Answer: A
Rationale: Rate <60 bpm with otherwise normal conduction = sinus bradycardia.
ECG Description: Regular rhythm, rate 110 bpm. Normal P-QRS morphology; PR 0.14 s.
What is the rhythm?
A. SVT
B. Sinus tachycardia
C. Atrial flutter
D. Ventricular tachycardia
Correct Answer: B
Rationale: Rate 100–150 bpm with normal P-QRS and gradual onset = sinus tachycardia.
ECG Description: Irregularly irregular rhythm, rate 90–130 bpm. No distinct P waves; baseline
shows fine fibrillatory waves. QRS narrow.
What is the rhythm?
A. Atrial flutter
B. Atrial fibrillation
C. Multifocal atrial tachycardia
D. Sinus arrhythmia
Correct Answer: B
, Rationale: Irregularly irregular with absent P and fibrillatory waves = AFib.
ECG Description: Saw-tooth flutter waves at 300/min; ventricular rhythm regular at 150 bpm.
QRS narrow.
What is the rhythm?
A. Atrial fibrillation
B. Atrial flutter 2:1
C. SVT
D. VT
Correct Answer: B
Rationale: Classic flutter waves with 2:1 conduction (300/2 = 150).
ECG Description: Regular sinus rhythm at 75 bpm. Two early wide QRS complexes (>0.12 s)
without preceding P waves; T wave opposite in direction to QRS.
The early beats are:
A. PACs
B. PJCs
C. PVCs
D. Aberrantly conducted PACs
Correct Answer: C
Rationale: Early, wide, bizarre QRS without P = PVC.
ECG Description: Strip shows five consecutive wide-QRS beats at 180 bpm, no P waves, rate
slightly irregular.
What is the rhythm?
A. VT
B. SVT with aberrancy
C. Atrial flutter
D. Torsades de pointes
Correct Answer: A
Rationale: ≥3 wide bizarre beats >100 bpm = VT.
ECG Description: Chaotic, coarse, irregular undulations; no identifiable P, QRS, or T waves.
What is the rhythm?
A. Asystole
B. Pulseless electrical activity
C. Ventricular fibrillation
D. Atrial fibrillation
Correct Answer: C
Rationale: Classic VFib pattern.
ECG Description: Nearly flat line; occasional low-amplitude P waves without QRS.
What is the rhythm?
A. Fine VF
B. Asystole
C. Third-degree block
D. Sinus bradycardia
Correct Answer: B
Rationale: Absence of ventricular activity = asystole.
Answers Complete Certification Exam | Actual Questions &
Verified Answers | Rhythm Identification & Priority
Interventions | Pass Guarantee
Section 1: Rhythm Identification & Analysis (Questions 1–25)
ECG Description: The rhythm strip shows a regular rhythm at 86 bpm. Each narrow QRS (0.08
s) is preceded by a uniform, upright P wave; PR interval is 0.18 s and constant. No ectopic or
dropped beats are seen.
What is the correct rhythm interpretation?
A. Normal sinus rhythm
B. Sinus bradycardia
C. Sinus tachycardia
D. First-degree AV block
Correct Answer: A
Rationale: Rate 60–100 bpm with all normal intervals and every P followed by a QRS = normal
sinus rhythm. PR is <0.20 s, so not 1° block.
ECG Description: Regular rhythm, rate 48 bpm. P waves upright and identical, PR 0.16 s, QRS
0.08 s. No ectopy.
What is the rhythm?
A. Sinus bradycardia
B. Idioventricular rhythm
C. First-degree AV block
D. Sinus arrhythmia
Correct Answer: A
Rationale: Rate <60 bpm with otherwise normal conduction = sinus bradycardia.
ECG Description: Regular rhythm, rate 110 bpm. Normal P-QRS morphology; PR 0.14 s.
What is the rhythm?
A. SVT
B. Sinus tachycardia
C. Atrial flutter
D. Ventricular tachycardia
Correct Answer: B
Rationale: Rate 100–150 bpm with normal P-QRS and gradual onset = sinus tachycardia.
ECG Description: Irregularly irregular rhythm, rate 90–130 bpm. No distinct P waves; baseline
shows fine fibrillatory waves. QRS narrow.
What is the rhythm?
A. Atrial flutter
B. Atrial fibrillation
C. Multifocal atrial tachycardia
D. Sinus arrhythmia
Correct Answer: B
, Rationale: Irregularly irregular with absent P and fibrillatory waves = AFib.
ECG Description: Saw-tooth flutter waves at 300/min; ventricular rhythm regular at 150 bpm.
QRS narrow.
What is the rhythm?
A. Atrial fibrillation
B. Atrial flutter 2:1
C. SVT
D. VT
Correct Answer: B
Rationale: Classic flutter waves with 2:1 conduction (300/2 = 150).
ECG Description: Regular sinus rhythm at 75 bpm. Two early wide QRS complexes (>0.12 s)
without preceding P waves; T wave opposite in direction to QRS.
The early beats are:
A. PACs
B. PJCs
C. PVCs
D. Aberrantly conducted PACs
Correct Answer: C
Rationale: Early, wide, bizarre QRS without P = PVC.
ECG Description: Strip shows five consecutive wide-QRS beats at 180 bpm, no P waves, rate
slightly irregular.
What is the rhythm?
A. VT
B. SVT with aberrancy
C. Atrial flutter
D. Torsades de pointes
Correct Answer: A
Rationale: ≥3 wide bizarre beats >100 bpm = VT.
ECG Description: Chaotic, coarse, irregular undulations; no identifiable P, QRS, or T waves.
What is the rhythm?
A. Asystole
B. Pulseless electrical activity
C. Ventricular fibrillation
D. Atrial fibrillation
Correct Answer: C
Rationale: Classic VFib pattern.
ECG Description: Nearly flat line; occasional low-amplitude P waves without QRS.
What is the rhythm?
A. Fine VF
B. Asystole
C. Third-degree block
D. Sinus bradycardia
Correct Answer: B
Rationale: Absence of ventricular activity = asystole.
