Relias Dysrhythmia Basic A Actual Exam
2026/2027 | Verified Questions
Relias Learning | Verified Q&A | Professional Nursing and Healthcare Candidates
This comprehensive actual exam set contains exactly 35 original questions designed to reinforce official
Relias Dysrhythmia Basic A course objectives. The questions cover ECG Rhythm Recognition, Clinical
Implications and Interventions, Pharmacological Management of Dysrhythmias, and Safety and
Monitoring Protocols. Content is original and constructed to promote clinical proficiency and accurate
application of cardiac rhythm interpretation and intervention principles for Professional Nursing and
Healthcare Candidates preparing for the actual examination in the 2026/2027 cycle. Rationales draw
upon Relias Dysrhythmia training materials, current AHA ACLS guidelines, and evidence-based cardiac
nursing standards.
Domain: ECG Rhythm Recognition
1. A rhythm strip shows a regular rate of 75 beats per minute, upright P waves preceding
each QRS, and a PR interval of 0.16 seconds. This rhythm is best identified as:
A. Sinus bradycardia
B. Normal sinus rhythm
C. Atrial fibrillation
D. Ventricular tachycardia
Correct Answer: A
Rationale: Normal sinus rhythm is characterized by a rate of 60–100 bpm, regular rhythm, upright P
waves before each QRS, and a normal PR interval (0.12–0.20 s).
2. Which ECG finding is characteristic of atrial fibrillation?
A. Regular rhythm with identical P waves before every QRS
B. Irregularly irregular rhythm with no discernible P waves and fibrillatory baseline
C. Wide complex tachycardia with AV dissociation
D. Sinus rhythm with frequent premature atrial contractions only
Correct Answer: A
Rationale: Atrial fibrillation produces an irregularly irregular ventricular response and an absence of
discrete P waves, replaced by fibrillatory waves.
3. A rhythm with a rate of 48 bpm, regular R-R intervals, and upright P waves before each
QRS is classified as:
A. Normal sinus rhythm
B. Sinus bradycardia
C. Junctional tachycardia
D. Ventricular escape rhythm
Correct Answer: A
Rationale: Sinus bradycardia is a sinus rhythm with a rate less than 60 bpm while retaining normal P-
wave morphology and PR interval.
4. Ventricular tachycardia is most accurately described as:
Relias Dysrhythmia Basic A Actual Exam 2026/2027 | Verified Questions
, A. A narrow-complex tachycardia originating above the ventricles
B. A wide-complex tachycardia originating in the ventricles, usually at a rate greater than 100–120
bpm
C. A slow escape rhythm with narrow QRS complexes
D. Atrial flutter with 4:1 conduction only
Correct Answer: B
Rationale: Ventricular tachycardia is a rapid rhythm originating below the His bundle, producing wide
QRS complexes and a rate typically >100–120 bpm.
5. In a second-degree AV block type I (Wenckebach), the ECG typically shows:
A. Constant PR intervals with dropped QRS complexes
B. Progressive lengthening of the PR interval until a QRS is dropped
C. Complete dissociation between P waves and QRS complexes
D. No P waves at all
Correct Answer: B
Rationale: Mobitz I is characterized by progressive PR prolongation culminating in a non-conducted P
wave, after which the cycle repeats.
6. Asystole is identified on the monitor as:
A. A flat line with no electrical activity (confirmed in more than one lead)
B. Fine ventricular fibrillation only
C. A regular wide-complex rhythm
D. Sinus rhythm with very low amplitude
Correct Answer: C
Rationale: Asystole is the absence of ventricular electrical activity; confirmation in multiple leads is
required before concluding the rhythm is asystole.
7. Premature ventricular complexes (PVCs) are characterized by:
A. Narrow QRS complexes that occur early and are preceded by P waves
B. Wide, bizarre QRS complexes that occur early and are usually not preceded by a related P wave
C. Only prolonged PR intervals
D. Regular sinus rhythm without early beats
Correct Answer: B
Rationale: PVCs arise from ventricular foci, producing early, wide, morphologically abnormal QRS
complexes without a preceding sinus P wave.
8. Atrial flutter commonly appears on the ECG as:
A. Irregular baseline with no organized atrial activity
B. Sawtooth (flutter) waves, often with a regular ventricular response at a fixed ratio (e.g., 2:1 or 4:1)
C. Only wide QRS complexes without atrial activity
D. Normal P waves at a rate of 60 bpm
Correct Answer: B
Rationale: Atrial flutter produces characteristic “sawtooth” flutter waves, most visible in the inferior
leads, with variable but often regular AV conduction.
9. Junctional rhythm is typically identified by:
A. Upright P waves before every QRS with a normal PR interval
B. Absent, inverted, or retrograde P waves and a rate usually 40–60 bpm with narrow QRS complexes
C. Wide QRS complexes at a rate greater than 150 bpm
D. Complete heart block with a ventricular rate of 30 bpm only
Relias Dysrhythmia Basic A Actual Exam 2026/2027 | Verified Questions
2026/2027 | Verified Questions
Relias Learning | Verified Q&A | Professional Nursing and Healthcare Candidates
This comprehensive actual exam set contains exactly 35 original questions designed to reinforce official
Relias Dysrhythmia Basic A course objectives. The questions cover ECG Rhythm Recognition, Clinical
Implications and Interventions, Pharmacological Management of Dysrhythmias, and Safety and
Monitoring Protocols. Content is original and constructed to promote clinical proficiency and accurate
application of cardiac rhythm interpretation and intervention principles for Professional Nursing and
Healthcare Candidates preparing for the actual examination in the 2026/2027 cycle. Rationales draw
upon Relias Dysrhythmia training materials, current AHA ACLS guidelines, and evidence-based cardiac
nursing standards.
Domain: ECG Rhythm Recognition
1. A rhythm strip shows a regular rate of 75 beats per minute, upright P waves preceding
each QRS, and a PR interval of 0.16 seconds. This rhythm is best identified as:
A. Sinus bradycardia
B. Normal sinus rhythm
C. Atrial fibrillation
D. Ventricular tachycardia
Correct Answer: A
Rationale: Normal sinus rhythm is characterized by a rate of 60–100 bpm, regular rhythm, upright P
waves before each QRS, and a normal PR interval (0.12–0.20 s).
2. Which ECG finding is characteristic of atrial fibrillation?
A. Regular rhythm with identical P waves before every QRS
B. Irregularly irregular rhythm with no discernible P waves and fibrillatory baseline
C. Wide complex tachycardia with AV dissociation
D. Sinus rhythm with frequent premature atrial contractions only
Correct Answer: A
Rationale: Atrial fibrillation produces an irregularly irregular ventricular response and an absence of
discrete P waves, replaced by fibrillatory waves.
3. A rhythm with a rate of 48 bpm, regular R-R intervals, and upright P waves before each
QRS is classified as:
A. Normal sinus rhythm
B. Sinus bradycardia
C. Junctional tachycardia
D. Ventricular escape rhythm
Correct Answer: A
Rationale: Sinus bradycardia is a sinus rhythm with a rate less than 60 bpm while retaining normal P-
wave morphology and PR interval.
4. Ventricular tachycardia is most accurately described as:
Relias Dysrhythmia Basic A Actual Exam 2026/2027 | Verified Questions
, A. A narrow-complex tachycardia originating above the ventricles
B. A wide-complex tachycardia originating in the ventricles, usually at a rate greater than 100–120
bpm
C. A slow escape rhythm with narrow QRS complexes
D. Atrial flutter with 4:1 conduction only
Correct Answer: B
Rationale: Ventricular tachycardia is a rapid rhythm originating below the His bundle, producing wide
QRS complexes and a rate typically >100–120 bpm.
5. In a second-degree AV block type I (Wenckebach), the ECG typically shows:
A. Constant PR intervals with dropped QRS complexes
B. Progressive lengthening of the PR interval until a QRS is dropped
C. Complete dissociation between P waves and QRS complexes
D. No P waves at all
Correct Answer: B
Rationale: Mobitz I is characterized by progressive PR prolongation culminating in a non-conducted P
wave, after which the cycle repeats.
6. Asystole is identified on the monitor as:
A. A flat line with no electrical activity (confirmed in more than one lead)
B. Fine ventricular fibrillation only
C. A regular wide-complex rhythm
D. Sinus rhythm with very low amplitude
Correct Answer: C
Rationale: Asystole is the absence of ventricular electrical activity; confirmation in multiple leads is
required before concluding the rhythm is asystole.
7. Premature ventricular complexes (PVCs) are characterized by:
A. Narrow QRS complexes that occur early and are preceded by P waves
B. Wide, bizarre QRS complexes that occur early and are usually not preceded by a related P wave
C. Only prolonged PR intervals
D. Regular sinus rhythm without early beats
Correct Answer: B
Rationale: PVCs arise from ventricular foci, producing early, wide, morphologically abnormal QRS
complexes without a preceding sinus P wave.
8. Atrial flutter commonly appears on the ECG as:
A. Irregular baseline with no organized atrial activity
B. Sawtooth (flutter) waves, often with a regular ventricular response at a fixed ratio (e.g., 2:1 or 4:1)
C. Only wide QRS complexes without atrial activity
D. Normal P waves at a rate of 60 bpm
Correct Answer: B
Rationale: Atrial flutter produces characteristic “sawtooth” flutter waves, most visible in the inferior
leads, with variable but often regular AV conduction.
9. Junctional rhythm is typically identified by:
A. Upright P waves before every QRS with a normal PR interval
B. Absent, inverted, or retrograde P waves and a rate usually 40–60 bpm with narrow QRS complexes
C. Wide QRS complexes at a rate greater than 150 bpm
D. Complete heart block with a ventricular rate of 30 bpm only
Relias Dysrhythmia Basic A Actual Exam 2026/2027 | Verified Questions
