Page 1 of 83
RELIAS – Dysrhythmia Basic A Exam ACTUAL EXAM
COMPLETE 200 QUESTIONS AND VERIFIED
SOLUTIONS LATEST UPDATE THIS YEAR
RELIAS Dysrhythmia Basic A Exam – Practice Questions
Total Questions: 200 (4 Batches × 50 Questions)
Format: Multiple Choice Questions (MCQs) with Correct Answers & Rationales
Exam Overview – Content Areas Covered in the Full Exam
This exam evaluates knowledge and clinical understanding of dysrhythmias. It covers:
1. Normal Cardiac Conduction & Anatomy
o SA node, AV node, bundle branches, Purkinje fibers
o Normal ECG intervals: PR, QRS, QT
2. Bradyarrhythmias
o Sinus bradycardia, junctional rhythms, AV blocks (first, second, third degree)
o Pacemaker recognition and troubleshooting
3. Tachyarrhythmias
o SVT, atrial flutter/fibrillation, junctional tachycardia
o Ventricular tachycardia, Torsades de Pointes
4. Premature Complexes & Ectopy
o PACs, PVCs, couplets, bigeminy, trigeminy
o R-on-T phenomenon and risk assessment
5. Cardiac Arrest Rhythms & ACLS Basics
o VF, pulseless VT, asystole, PEA
o Basic ACLS interventions
,Page 2 of 83
6. Electrolyte & Pharmacologic Effects on ECG
o Hyper/hypokalemia, magnesium, calcium
o Antiarrhythmic drugs, adenosine, atropine
7. Ischemia & Infarction Patterns
o STEMI vs NSTEMI
o Lead localization (inferior, anterior, lateral, posterior)
8. Pacemaker & Device Rhythm Recognition
o Atrial, ventricular, dual-chamber pacing
o Capture vs failure to capture
Batch 1 – Questions 1–50
1. The SA node is located in which chamber of the heart?
A. Left atrium
B. Right atrium
C. Left ventricle
D. Right ventricle
Answer: B
Rationale: The sinoatrial (SA) node is the natural pacemaker located in the right atrium near
the superior vena cava.
2. The normal PR interval is:
,Page 3 of 83
A. 0.08–0.10 sec
B. 0.12–0.20 sec
C. 0.20–0.24 sec
D. 0.24–0.30 sec
Answer: B
Rationale: PR interval represents atrial depolarization and AV node conduction. Normal is 0.12–
0.20 sec.
3. The normal QRS duration is:
A. 0.04–0.08 sec
B. 0.06–0.10 sec
C. 0.10–0.12 sec
D. 0.12–0.16 sec
Answer: B
Rationale: QRS represents ventricular depolarization; >0.12 sec indicates conduction delay.
4. Sinus bradycardia is defined as:
A. HR <60 bpm
B. HR 60–100 bpm
, Page 4 of 83
C. HR >100 bpm
D. HR <40 bpm
Answer: A
Rationale: Sinus bradycardia is a slow heart rate originating from the SA node, <60 bpm.
5. Junctional escape rhythm originates from:
A. SA node
B. AV junction
C. Purkinje fibers
D. Ventricular myocardium
Answer: B
Rationale: Junctional rhythms originate in the AV node area when SA node fails.
6. First-degree AV block ECG finding:
A. PR interval >0.20 sec, every P followed by QRS
B. Dropped QRS complexes
C. Irregular P waves
D. Wide QRS
RELIAS – Dysrhythmia Basic A Exam ACTUAL EXAM
COMPLETE 200 QUESTIONS AND VERIFIED
SOLUTIONS LATEST UPDATE THIS YEAR
RELIAS Dysrhythmia Basic A Exam – Practice Questions
Total Questions: 200 (4 Batches × 50 Questions)
Format: Multiple Choice Questions (MCQs) with Correct Answers & Rationales
Exam Overview – Content Areas Covered in the Full Exam
This exam evaluates knowledge and clinical understanding of dysrhythmias. It covers:
1. Normal Cardiac Conduction & Anatomy
o SA node, AV node, bundle branches, Purkinje fibers
o Normal ECG intervals: PR, QRS, QT
2. Bradyarrhythmias
o Sinus bradycardia, junctional rhythms, AV blocks (first, second, third degree)
o Pacemaker recognition and troubleshooting
3. Tachyarrhythmias
o SVT, atrial flutter/fibrillation, junctional tachycardia
o Ventricular tachycardia, Torsades de Pointes
4. Premature Complexes & Ectopy
o PACs, PVCs, couplets, bigeminy, trigeminy
o R-on-T phenomenon and risk assessment
5. Cardiac Arrest Rhythms & ACLS Basics
o VF, pulseless VT, asystole, PEA
o Basic ACLS interventions
,Page 2 of 83
6. Electrolyte & Pharmacologic Effects on ECG
o Hyper/hypokalemia, magnesium, calcium
o Antiarrhythmic drugs, adenosine, atropine
7. Ischemia & Infarction Patterns
o STEMI vs NSTEMI
o Lead localization (inferior, anterior, lateral, posterior)
8. Pacemaker & Device Rhythm Recognition
o Atrial, ventricular, dual-chamber pacing
o Capture vs failure to capture
Batch 1 – Questions 1–50
1. The SA node is located in which chamber of the heart?
A. Left atrium
B. Right atrium
C. Left ventricle
D. Right ventricle
Answer: B
Rationale: The sinoatrial (SA) node is the natural pacemaker located in the right atrium near
the superior vena cava.
2. The normal PR interval is:
,Page 3 of 83
A. 0.08–0.10 sec
B. 0.12–0.20 sec
C. 0.20–0.24 sec
D. 0.24–0.30 sec
Answer: B
Rationale: PR interval represents atrial depolarization and AV node conduction. Normal is 0.12–
0.20 sec.
3. The normal QRS duration is:
A. 0.04–0.08 sec
B. 0.06–0.10 sec
C. 0.10–0.12 sec
D. 0.12–0.16 sec
Answer: B
Rationale: QRS represents ventricular depolarization; >0.12 sec indicates conduction delay.
4. Sinus bradycardia is defined as:
A. HR <60 bpm
B. HR 60–100 bpm
, Page 4 of 83
C. HR >100 bpm
D. HR <40 bpm
Answer: A
Rationale: Sinus bradycardia is a slow heart rate originating from the SA node, <60 bpm.
5. Junctional escape rhythm originates from:
A. SA node
B. AV junction
C. Purkinje fibers
D. Ventricular myocardium
Answer: B
Rationale: Junctional rhythms originate in the AV node area when SA node fails.
6. First-degree AV block ECG finding:
A. PR interval >0.20 sec, every P followed by QRS
B. Dropped QRS complexes
C. Irregular P waves
D. Wide QRS
