RELIAS DYSRHYTHMIA BASIC A
2026 WITH ACTUAL CORRECT QUESTIONS
AND VERIFIED DETAILED ANSWERS
|CURRENTLY TESTING QUESTIONS AND
SOLUTIONS|ALREADY GRADED
A+|NEWEST|BRAND NEW VERSION
!!|GUARANTEED PASS
1. What is the normal intrinsic rate of the SA node?
A. 20–40 bpm
B. 40–60 bpm
C. 60–100 bpm
D. 100–150 bpm
Correct Answer: C
Rationale: SA node (primary pacemaker) fires at 60–100 bpm. AV node = 40–60; ventricles =
20–40.
2. The PR interval represents:
A. Ventricular depolarization
B. Atrial depolarization through AV node delay
C. Ventricular repolarization
D. Atrial repolarization
Correct Answer: B
Rationale: PR interval = electrical impulse traveling from SA node → AV node → bundle of His.
3. A normal QRS duration is:
A. < 0.08 sec
B. 0.08–0.12 sec
C. 0.12–0.20 sec
D. > 0.20 sec
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,Correct Answer: B
Rationale: Normal QRS = 0.08–0.12 sec. >0.12 suggests bundle branch block or ventricular
rhythm.
4. A rhythm shows: rate 52, regular, P waves upright, QRS normal.
This is:**
A. Sinus bradycardia
B. Junctional rhythm
C. Sinus rhythm with PACs
D. First-degree block
Correct Answer: A
Rationale: Sinus bradycardia = normal sinus but rate < 60.
5. Which finding must be present for sinus tachycardia?
A. Irregular rhythm
B. P waves inverted
C. Rate >100 with normal P before each QRS
D. QRS wide
Correct Answer: C
6. ECG shows: sawtooth F-waves, atrial rate 300, ventricular rhythm regular.
This rhythm is:**
A. Atrial fibrillation
B. Atrial flutter
C. SVT
D. Junctional tachycardia
Correct Answer: B
Rationale: Sawtooth flutter waves = atrial flutter.
7. A rhythm strip has an irregularly irregular rhythm with no identifiable P waves.
This is:**
A. Atrial fibrillation
B. Sinus arrhythmia
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, C. MAT
D. Atrial flutter
Correct Answer: A
Rationale: Afib = chaotic baseline, no P waves, irregularly irregular.
8. You see inverted P waves and a rate of 45 bpm.
This is:**
A. Junctional escape rhythm
B. SVT
C. Ventricular escape rhythm
D. Sinus bradycardia
Correct Answer: A
Rationale: Junctional escape = 40–60 bpm + inverted/hidden P waves.
9. A junctional tachycardia rate is:
A. 20–40
B. 40–60
C. 60–100
D. >100
Correct Answer: D
10. A wide QRS rhythm at 34 bpm is:
A. Ventricular tachycardia
B. Junctional rhythm
C. Ventricular escape rhythm
D. Idioventricular rhythm
Correct Answer: D
Rationale: “Idioventricular = Ventricular escape” is 20–40 bpm with wide QRS.
11. Which rhythm is a life-threatening emergency?
Strip described: chaotic waveform, no P or QRS.
A. V-fib
B. A-fib
3|Page
2026 WITH ACTUAL CORRECT QUESTIONS
AND VERIFIED DETAILED ANSWERS
|CURRENTLY TESTING QUESTIONS AND
SOLUTIONS|ALREADY GRADED
A+|NEWEST|BRAND NEW VERSION
!!|GUARANTEED PASS
1. What is the normal intrinsic rate of the SA node?
A. 20–40 bpm
B. 40–60 bpm
C. 60–100 bpm
D. 100–150 bpm
Correct Answer: C
Rationale: SA node (primary pacemaker) fires at 60–100 bpm. AV node = 40–60; ventricles =
20–40.
2. The PR interval represents:
A. Ventricular depolarization
B. Atrial depolarization through AV node delay
C. Ventricular repolarization
D. Atrial repolarization
Correct Answer: B
Rationale: PR interval = electrical impulse traveling from SA node → AV node → bundle of His.
3. A normal QRS duration is:
A. < 0.08 sec
B. 0.08–0.12 sec
C. 0.12–0.20 sec
D. > 0.20 sec
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,Correct Answer: B
Rationale: Normal QRS = 0.08–0.12 sec. >0.12 suggests bundle branch block or ventricular
rhythm.
4. A rhythm shows: rate 52, regular, P waves upright, QRS normal.
This is:**
A. Sinus bradycardia
B. Junctional rhythm
C. Sinus rhythm with PACs
D. First-degree block
Correct Answer: A
Rationale: Sinus bradycardia = normal sinus but rate < 60.
5. Which finding must be present for sinus tachycardia?
A. Irregular rhythm
B. P waves inverted
C. Rate >100 with normal P before each QRS
D. QRS wide
Correct Answer: C
6. ECG shows: sawtooth F-waves, atrial rate 300, ventricular rhythm regular.
This rhythm is:**
A. Atrial fibrillation
B. Atrial flutter
C. SVT
D. Junctional tachycardia
Correct Answer: B
Rationale: Sawtooth flutter waves = atrial flutter.
7. A rhythm strip has an irregularly irregular rhythm with no identifiable P waves.
This is:**
A. Atrial fibrillation
B. Sinus arrhythmia
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, C. MAT
D. Atrial flutter
Correct Answer: A
Rationale: Afib = chaotic baseline, no P waves, irregularly irregular.
8. You see inverted P waves and a rate of 45 bpm.
This is:**
A. Junctional escape rhythm
B. SVT
C. Ventricular escape rhythm
D. Sinus bradycardia
Correct Answer: A
Rationale: Junctional escape = 40–60 bpm + inverted/hidden P waves.
9. A junctional tachycardia rate is:
A. 20–40
B. 40–60
C. 60–100
D. >100
Correct Answer: D
10. A wide QRS rhythm at 34 bpm is:
A. Ventricular tachycardia
B. Junctional rhythm
C. Ventricular escape rhythm
D. Idioventricular rhythm
Correct Answer: D
Rationale: “Idioventricular = Ventricular escape” is 20–40 bpm with wide QRS.
11. Which rhythm is a life-threatening emergency?
Strip described: chaotic waveform, no P or QRS.
A. V-fib
B. A-fib
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