RELIAS DYSRHYTHMIAS CLINICAL
ASSESSMENT EXAM 2026 WITH 100
QUESTIONS AND VERIFIED CORRECT
ANSWERS | ALREADY GRADED A
+ | WITH DETAILED RATIONALES |
GUARANTEED SUCCESS | RELIAS
DYSRHYTHMIA CLINICAL EXAM 2026
1. Which ECG component represents ventricular depolarization?
A. P wave
B. PR interval
C. QRS complex
D. T wave
Answer: C
Rationale: The QRS complex represents ventricular depolarization. The P wave
represents atrial depolarization, and the T wave represents ventricular
repolarization.
2. A normal PR interval measures:
A. 0.08–0.10 seconds
B. 0.12–0.20 seconds
C. 0.20–0.28 seconds
D. 0.30–0.36 seconds
Answer: B
Rationale: The normal PR interval ranges from 0.12 to 0.20 seconds, indicating
normal AV nodal conduction.
,3. Which rhythm originates from the SA node?
A. Junctional rhythm
B. Ventricular tachycardia
C. Sinus rhythm
D. Atrial fibrillation
Answer: C
Rationale: Sinus rhythms originate from the sinoatrial (SA) node, the heart’s
primary pacemaker.
4. Sinus bradycardia is defined as a heart rate:
A. Less than 50 bpm
B. Less than 60 bpm
C. Less than 70 bpm
D. Less than 80 bpm
Answer: B
Rationale: Sinus bradycardia occurs when the heart rate is below 60 beats per
minute.
5. Which condition commonly causes sinus tachycardia?
A. Hypothermia
B. Increased vagal tone
C. Pain or fever
D. Hyperkalemia
Answer: C
Rationale: Pain, fever, anxiety, hypovolemia, and exercise stimulate sympathetic
activity, increasing heart rate.
6. Which rhythm is described as “irregularly irregular”?
A. Atrial flutter
B. Sinus arrhythmia
, C. Atrial fibrillation
D. Ventricular tachycardia
Answer: C
Rationale: Atrial fibrillation produces chaotic atrial impulses resulting in an
irregularly irregular rhythm.
7. Atrial flutter is characterized by:
A. Absent P waves
B. Sawtooth flutter waves
C. Wide QRS complexes
D. Irregular ventricular rhythm
Answer: B
Rationale: Atrial flutter displays classic sawtooth flutter waves, especially in
inferior leads.
8. Which finding is typical of junctional rhythm?
A. Upright P waves
B. Absent or inverted P waves
C. Wide QRS complexes
D. Irregular rhythm
Answer: B
Rationale: Junctional rhythms originate near the AV node, often causing inverted
or absent P waves.
9. Which rhythm is immediately life-threatening?
A. Sinus bradycardia
B. First-degree AV block
C. Ventricular fibrillation
D. Atrial flutter
ASSESSMENT EXAM 2026 WITH 100
QUESTIONS AND VERIFIED CORRECT
ANSWERS | ALREADY GRADED A
+ | WITH DETAILED RATIONALES |
GUARANTEED SUCCESS | RELIAS
DYSRHYTHMIA CLINICAL EXAM 2026
1. Which ECG component represents ventricular depolarization?
A. P wave
B. PR interval
C. QRS complex
D. T wave
Answer: C
Rationale: The QRS complex represents ventricular depolarization. The P wave
represents atrial depolarization, and the T wave represents ventricular
repolarization.
2. A normal PR interval measures:
A. 0.08–0.10 seconds
B. 0.12–0.20 seconds
C. 0.20–0.28 seconds
D. 0.30–0.36 seconds
Answer: B
Rationale: The normal PR interval ranges from 0.12 to 0.20 seconds, indicating
normal AV nodal conduction.
,3. Which rhythm originates from the SA node?
A. Junctional rhythm
B. Ventricular tachycardia
C. Sinus rhythm
D. Atrial fibrillation
Answer: C
Rationale: Sinus rhythms originate from the sinoatrial (SA) node, the heart’s
primary pacemaker.
4. Sinus bradycardia is defined as a heart rate:
A. Less than 50 bpm
B. Less than 60 bpm
C. Less than 70 bpm
D. Less than 80 bpm
Answer: B
Rationale: Sinus bradycardia occurs when the heart rate is below 60 beats per
minute.
5. Which condition commonly causes sinus tachycardia?
A. Hypothermia
B. Increased vagal tone
C. Pain or fever
D. Hyperkalemia
Answer: C
Rationale: Pain, fever, anxiety, hypovolemia, and exercise stimulate sympathetic
activity, increasing heart rate.
6. Which rhythm is described as “irregularly irregular”?
A. Atrial flutter
B. Sinus arrhythmia
, C. Atrial fibrillation
D. Ventricular tachycardia
Answer: C
Rationale: Atrial fibrillation produces chaotic atrial impulses resulting in an
irregularly irregular rhythm.
7. Atrial flutter is characterized by:
A. Absent P waves
B. Sawtooth flutter waves
C. Wide QRS complexes
D. Irregular ventricular rhythm
Answer: B
Rationale: Atrial flutter displays classic sawtooth flutter waves, especially in
inferior leads.
8. Which finding is typical of junctional rhythm?
A. Upright P waves
B. Absent or inverted P waves
C. Wide QRS complexes
D. Irregular rhythm
Answer: B
Rationale: Junctional rhythms originate near the AV node, often causing inverted
or absent P waves.
9. Which rhythm is immediately life-threatening?
A. Sinus bradycardia
B. First-degree AV block
C. Ventricular fibrillation
D. Atrial flutter
