RELIAS DYSRHYTHMIAS EXAM B /RELIAS DYSRHYTHMIAS
ADVANCED WITH MEASUREMENTS B EXAM ACTUAL 2026/2027
COMPLETE ACCURATE EXAM WITH APPROVED QUESTIONS AND
CORRECT VERIFIED ANSWERS WITH DETAILED RATIONALES (A NEW
UPDATED VERSION 2026 EDITION) |GUARANTEED PASS A+ |INSTANT
DOWNLOAD PDF
1. A patient’s cardiac monitor shows a regular rhythm with a rate of 42 beats per
minute. There is a P wave before each QRS complex, and the PR interval is 0.20
seconds. Which of the following is the correct interpretation?
A. Sinus tachycardia
B. Sinus bradycardia with first-degree AV block
C. Junctional rhythm
D. Atrial fibrillation with slow ventricular response
Correct Answer: B – Sinus bradycardia with first-degree AV block
Rationale: The rate is <60 bpm (sinus bradycardia). Each QRS has a preceding P
wave (sinus origin), and PR interval is prolonged >0.20 sec, indicating first-degree
AV block.
2. A 72-year-old patient reports dizziness. The rhythm strip shows an irregularly
irregular rhythm with no discernible P waves and a ventricular rate of 118 bpm.
What is the most likely diagnosis?
A. Atrial flutter
B. Multifocal atrial tachycardia
C. Atrial fibrillation
D. Sinus arrhythmia
Correct Answer: C – Atrial fibrillation
,Rationale: Atrial fibrillation is characterized by irregularly irregular rhythm,
absence of P waves, and often rapid ventricular response.
3. The ECG shows a regular wide-complex tachycardia at 180 bpm. The patient is
hypotensive and confused. What is the correct next step?
A. Amiodarone 150 mg IV
B. Adenosine 6 mg rapid IV push
C. Synchronized cardioversion
D. Magnesium sulfate 2 g IV
Correct Answer: C – Synchronized cardioversion
Rationale: Unstable patient with wide-complex tachycardia requires immediate
synchronized cardioversion. Adenosine is for stable narrow-complex tachycardia.
4. Which of the following findings is consistent with first-degree AV block?
A. PR interval 0.28 seconds, constant
B. PR interval progressively lengthens then a dropped QRS
C. PR interval 0.12 seconds, variable
D. No relationship between P waves and QRS complexes
Correct Answer: A – PR interval 0.28 seconds, constant
Rationale: First-degree AV block is defined by PR interval >0.20 sec with 1:1
atrial-to-ventricular conduction.
5. A patient’s telemetry shows a pause of 3.2 seconds with no P waves or QRS
complexes. The underlying rhythm before the pause was sinus bradycardia at 52
bpm. This is most consistent with:
, A. Sinus arrest
B. Sinus arrhythmia
C. Mobitz type II
D. Complete heart block
Correct Answer: A – Sinus arrest
Rationale: Sinus arrest is a pause with no atrial or ventricular activity, not related
to blocked P waves. Sinus arrhythmia has gradual phasic changes, not sudden
pauses.
6. Which medication is most appropriate for stable monomorphic ventricular
tachycardia with preserved ejection fraction?
A. Lidocaine
B. Amiodarone
C. Procainamide
D. Adenosine
Correct Answer: B – Amiodarone
Rationale: For stable monomorphic VT, amiodarone is preferred. Procainamide
also acceptable but amiodarone more commonly used first-line per ACLS.
7. A patient has a heart rate of 38 bpm, BP 90/60, and reports fatigue. ECG shows
no P waves, narrow QRS, regular rhythm. What is the diagnosis?
A. Idioventricular rhythm
B. Junctional bradycardia
C. Sinus bradycardia
D. Atrial fibrillation with slow response
ADVANCED WITH MEASUREMENTS B EXAM ACTUAL 2026/2027
COMPLETE ACCURATE EXAM WITH APPROVED QUESTIONS AND
CORRECT VERIFIED ANSWERS WITH DETAILED RATIONALES (A NEW
UPDATED VERSION 2026 EDITION) |GUARANTEED PASS A+ |INSTANT
DOWNLOAD PDF
1. A patient’s cardiac monitor shows a regular rhythm with a rate of 42 beats per
minute. There is a P wave before each QRS complex, and the PR interval is 0.20
seconds. Which of the following is the correct interpretation?
A. Sinus tachycardia
B. Sinus bradycardia with first-degree AV block
C. Junctional rhythm
D. Atrial fibrillation with slow ventricular response
Correct Answer: B – Sinus bradycardia with first-degree AV block
Rationale: The rate is <60 bpm (sinus bradycardia). Each QRS has a preceding P
wave (sinus origin), and PR interval is prolonged >0.20 sec, indicating first-degree
AV block.
2. A 72-year-old patient reports dizziness. The rhythm strip shows an irregularly
irregular rhythm with no discernible P waves and a ventricular rate of 118 bpm.
What is the most likely diagnosis?
A. Atrial flutter
B. Multifocal atrial tachycardia
C. Atrial fibrillation
D. Sinus arrhythmia
Correct Answer: C – Atrial fibrillation
,Rationale: Atrial fibrillation is characterized by irregularly irregular rhythm,
absence of P waves, and often rapid ventricular response.
3. The ECG shows a regular wide-complex tachycardia at 180 bpm. The patient is
hypotensive and confused. What is the correct next step?
A. Amiodarone 150 mg IV
B. Adenosine 6 mg rapid IV push
C. Synchronized cardioversion
D. Magnesium sulfate 2 g IV
Correct Answer: C – Synchronized cardioversion
Rationale: Unstable patient with wide-complex tachycardia requires immediate
synchronized cardioversion. Adenosine is for stable narrow-complex tachycardia.
4. Which of the following findings is consistent with first-degree AV block?
A. PR interval 0.28 seconds, constant
B. PR interval progressively lengthens then a dropped QRS
C. PR interval 0.12 seconds, variable
D. No relationship between P waves and QRS complexes
Correct Answer: A – PR interval 0.28 seconds, constant
Rationale: First-degree AV block is defined by PR interval >0.20 sec with 1:1
atrial-to-ventricular conduction.
5. A patient’s telemetry shows a pause of 3.2 seconds with no P waves or QRS
complexes. The underlying rhythm before the pause was sinus bradycardia at 52
bpm. This is most consistent with:
, A. Sinus arrest
B. Sinus arrhythmia
C. Mobitz type II
D. Complete heart block
Correct Answer: A – Sinus arrest
Rationale: Sinus arrest is a pause with no atrial or ventricular activity, not related
to blocked P waves. Sinus arrhythmia has gradual phasic changes, not sudden
pauses.
6. Which medication is most appropriate for stable monomorphic ventricular
tachycardia with preserved ejection fraction?
A. Lidocaine
B. Amiodarone
C. Procainamide
D. Adenosine
Correct Answer: B – Amiodarone
Rationale: For stable monomorphic VT, amiodarone is preferred. Procainamide
also acceptable but amiodarone more commonly used first-line per ACLS.
7. A patient has a heart rate of 38 bpm, BP 90/60, and reports fatigue. ECG shows
no P waves, narrow QRS, regular rhythm. What is the diagnosis?
A. Idioventricular rhythm
B. Junctional bradycardia
C. Sinus bradycardia
D. Atrial fibrillation with slow response
