BSMH Advanced Arrhythmia Actual
Exam Questions And Answers Practice
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PART 1: Rhythm Identification — Core Competencies
(Questions 1–50)
Question 1
A patient's rhythm strip shows an irregularly irregular rhythm with
no discernible P waves. What is the rhythm?
A. Atrial flutter
B. Atrial fibrillation
C. Sinus tachycardia
D. Ventricular tachycardia
Answer: B. Atrial fibrillation
Rationale: Atrial fibrillation is characterized by an irregularly
irregular rhythm and the absence of identifiable P waves due to
chaotic atrial activity.
Question 2
A patient has a ventricular rate of 180 bpm, wide QRS complexes
(>0.12 sec), and a regular rhythm. What is most likely?
A. SVT with aberrancy
B. Ventricular tachycardia
C. Atrial fibrillation
D. Sinus tachycardia
Answer: B. Ventricular tachycardia
,*Rationale: Ventricular tachycardia presents with a regular, wide-
complex tachycardia typically >100 bpm.*
Question 3
A prolonged PR interval (>0.20 sec) indicates:
A. First-degree AV block
B. Hyperkalemia
C. Junctional rhythm
D. Ventricular hypertrophy
Answer: A. First-degree AV block
*Rationale: First-degree AV block is defined by a consistent PR
interval exceeding 0.20 seconds due to delayed conduction
through the AV node.*
Question 4
What is the normal intrinsic firing rate of the AV node?
A. 20–40 bpm
B. 40–60 bpm
C. 60–80 bpm
D. 80–100 bpm
Answer: B. 40–60 bpm
Rationale: The AV node acts as a secondary pacemaker (junctional
escape rhythm) at 40–60 bpm.
Question 5
Normal sinus rhythm has a heart rate between:
A. 40–60 bpm
B. 60–100 bpm
C. 80–120 bpm
D. 100–150 bpm
Answer: B. 60–100 bpm
,Rationale: Sinus rhythm is defined by a heart rate of 60–100 bpm
with normal P waves preceding each QRS complex.
Question 6
Sinus bradycardia is defined as:
A. HR >100 bpm with irregular rhythm
B. HR <60 bpm with normal P waves preceding each QRS
C. HR <50 bpm with absent P waves
D. HR >150 bpm with narrow QRS
Answer: B. HR <60 bpm with normal P waves preceding each
QRS
Rationale: Sinus bradycardia is a heart rate of less than 60 bpm
with normal sinus rhythm characteristics.
Question 7
The normal PR interval duration is:
A. 0.04–0.08 seconds
B. 0.06–0.10 seconds
C. 0.12–0.20 seconds
D. 0.20–0.40 seconds
Answer: C. 0.12–0.20 seconds
Rationale: The PR interval represents the time from atrial
depolarization to ventricular depolarization.
Question 8
The normal QRS duration is:
A. <0.06 seconds
B. <0.12 seconds
C. <0.20 seconds
D. <0.24 seconds
Answer: B. <0.12 seconds
, Rationale: A normal QRS duration is less than 0.12 seconds (3 small
boxes).
Question 9
The normal QT interval (corrected) duration is:
A. 0.12–0.20 seconds
B. 0.20–0.30 seconds
C. 0.36–0.44 seconds
D. 0.44–0.52 seconds
Answer: C. 0.36–0.44 seconds
Rationale: The corrected QT interval (QTc) typically ranges from
0.36–0.44 seconds.
Question 10
The P wave represents:
A. Ventricular depolarization
B. Atrial depolarization
C. Ventricular repolarization
D. AV nodal delay
Answer: B. Atrial depolarization
Rationale: The P wave represents atrial depolarization (contraction).
Question 11
The QRS complex represents:
A. Atrial depolarization
B. AV nodal conduction
C. Ventricular depolarization
D. Ventricular repolarization
Answer: C. Ventricular depolarization
Rationale: The QRS complex represents ventricular depolarization,
which triggers ventricular contraction.
Exam Questions And Answers Practice
Questions with Solutions Newest |
Already Graded A+
PART 1: Rhythm Identification — Core Competencies
(Questions 1–50)
Question 1
A patient's rhythm strip shows an irregularly irregular rhythm with
no discernible P waves. What is the rhythm?
A. Atrial flutter
B. Atrial fibrillation
C. Sinus tachycardia
D. Ventricular tachycardia
Answer: B. Atrial fibrillation
Rationale: Atrial fibrillation is characterized by an irregularly
irregular rhythm and the absence of identifiable P waves due to
chaotic atrial activity.
Question 2
A patient has a ventricular rate of 180 bpm, wide QRS complexes
(>0.12 sec), and a regular rhythm. What is most likely?
A. SVT with aberrancy
B. Ventricular tachycardia
C. Atrial fibrillation
D. Sinus tachycardia
Answer: B. Ventricular tachycardia
,*Rationale: Ventricular tachycardia presents with a regular, wide-
complex tachycardia typically >100 bpm.*
Question 3
A prolonged PR interval (>0.20 sec) indicates:
A. First-degree AV block
B. Hyperkalemia
C. Junctional rhythm
D. Ventricular hypertrophy
Answer: A. First-degree AV block
*Rationale: First-degree AV block is defined by a consistent PR
interval exceeding 0.20 seconds due to delayed conduction
through the AV node.*
Question 4
What is the normal intrinsic firing rate of the AV node?
A. 20–40 bpm
B. 40–60 bpm
C. 60–80 bpm
D. 80–100 bpm
Answer: B. 40–60 bpm
Rationale: The AV node acts as a secondary pacemaker (junctional
escape rhythm) at 40–60 bpm.
Question 5
Normal sinus rhythm has a heart rate between:
A. 40–60 bpm
B. 60–100 bpm
C. 80–120 bpm
D. 100–150 bpm
Answer: B. 60–100 bpm
,Rationale: Sinus rhythm is defined by a heart rate of 60–100 bpm
with normal P waves preceding each QRS complex.
Question 6
Sinus bradycardia is defined as:
A. HR >100 bpm with irregular rhythm
B. HR <60 bpm with normal P waves preceding each QRS
C. HR <50 bpm with absent P waves
D. HR >150 bpm with narrow QRS
Answer: B. HR <60 bpm with normal P waves preceding each
QRS
Rationale: Sinus bradycardia is a heart rate of less than 60 bpm
with normal sinus rhythm characteristics.
Question 7
The normal PR interval duration is:
A. 0.04–0.08 seconds
B. 0.06–0.10 seconds
C. 0.12–0.20 seconds
D. 0.20–0.40 seconds
Answer: C. 0.12–0.20 seconds
Rationale: The PR interval represents the time from atrial
depolarization to ventricular depolarization.
Question 8
The normal QRS duration is:
A. <0.06 seconds
B. <0.12 seconds
C. <0.20 seconds
D. <0.24 seconds
Answer: B. <0.12 seconds
, Rationale: A normal QRS duration is less than 0.12 seconds (3 small
boxes).
Question 9
The normal QT interval (corrected) duration is:
A. 0.12–0.20 seconds
B. 0.20–0.30 seconds
C. 0.36–0.44 seconds
D. 0.44–0.52 seconds
Answer: C. 0.36–0.44 seconds
Rationale: The corrected QT interval (QTc) typically ranges from
0.36–0.44 seconds.
Question 10
The P wave represents:
A. Ventricular depolarization
B. Atrial depolarization
C. Ventricular repolarization
D. AV nodal delay
Answer: B. Atrial depolarization
Rationale: The P wave represents atrial depolarization (contraction).
Question 11
The QRS complex represents:
A. Atrial depolarization
B. AV nodal conduction
C. Ventricular depolarization
D. Ventricular repolarization
Answer: C. Ventricular depolarization
Rationale: The QRS complex represents ventricular depolarization,
which triggers ventricular contraction.
