BASIC ARRHYTHMIA SENTARA TEST EXAM |
PRACTICE EXAM | STUDY GUIDE | TESTBANK | LATEST
UPDATE 2026/2027 | QUESTIONS & 100% CORRECT
ANSWERS
## Table of Contents
1. Cardiac Electrophysiology
2. ECG Interpretation Fundamentals
3. Heart Rate and Rhythm Analysis
4. Sinus Rhythms
5. Atrial Dysrhythmias
6. Junctional Rhythms
7. Ventricular Dysrhythmias
8. Atrioventricular Blocks
9. Pacemaker Rhythms
10. Clinical Priorities and Rhythm Recognition
Introduction
This practice examination is designed to prepare healthcare professionals for the
Basic Arrhythmia Sentara Test using current ECG interpretation standards and
clinical practice expected for the 2026/2027 testing cycle. The examination
emphasizes systematic rhythm analysis, accurate dysrhythmia identification, clinical
decision-making, and recognition of life-threatening cardiac rhythms. Questions
integrate patient scenarios requiring application of electrophysiology, ECG
interpretation principles, and prioritization of appropriate nursing responses.
Candidates should be prepared to evaluate rhythm strips, distinguish similar
dysrhythmias, recognize conduction abnormalities, and determine the urgency of
intervention. This practice exam mirrors the analytical thinking and professional
judgment expected during competency assessments in acute and critical care
settings.
Question 1
,A telemetry strip demonstrates a regular rhythm at 76 beats/minute. Each QRS
complex is preceded by a uniform upright P wave. PR interval measures 0.18
seconds, and QRS duration is 0.08 seconds. Which rhythm is present?
A. Accelerated junctional rhythm
B. Normal sinus rhythm
C. Sinus tachycardia
D. Wandering atrial pacemaker
Correct Answer: B
Explanation: Normal sinus rhythm requires a rate of 60–100 bpm, regular rhythm,
one upright P wave preceding each QRS, PR interval of 0.12–0.20 seconds, and
QRS duration under 0.12 seconds.
Question 2
A patient suddenly becomes unresponsive. The monitor shows a chaotic waveform
without identifiable P waves, QRS complexes, or T waves. What is the priority
intervention?
A. Obtain a 12-lead ECG
B. Begin synchronized cardioversion
C. Initiate CPR and prepare for defibrillation
D. Administer atropine
Correct Answer: C
Explanation: Ventricular fibrillation is a shockable cardiac arrest rhythm requiring
immediate CPR and unsynchronized defibrillation.
,Question 3
Which ECG characteristic most strongly differentiates atrial flutter from atrial
fibrillation?
A. Presence of prolonged PR intervals
B. Sawtooth flutter waves
C. Wide QRS complexes
D. Delta waves
Correct Answer: B
Explanation: Atrial flutter classically produces organized sawtooth flutter waves,
whereas atrial fibrillation lacks organized atrial activity.
Question 4
A rhythm strip demonstrates progressively lengthening PR intervals followed by a
non-conducted P wave. Which conduction disturbance is present?
A. First-degree AV block
B. Second-degree AV block Type I
C. Second-degree AV block Type II
D. Third-degree AV block
Correct Answer: B
Explanation: Mobitz I (Wenckebach) is characterized by progressively prolonged
PR intervals before a dropped QRS complex.
, Question 5
Which rhythm is most likely to reduce cardiac output because atrial contraction is
absent and ventricular response is irregular?
A. Sinus arrhythmia
B. Atrial fibrillation
C. Sinus bradycardia
D. First-degree AV block
Correct Answer: B
Explanation: Atrial fibrillation eliminates effective atrial contraction and often
produces an irregular ventricular response that may impair cardiac output.
Question 6
A patient has a regular ventricular rhythm of 38 bpm with absent P waves and
narrow QRS complexes. Which rhythm is most likely?
A. Idioventricular rhythm
B. Junctional escape rhythm
C. Ventricular tachycardia
D. Sinus arrest
Correct Answer: B
Explanation: Junctional escape rhythms typically have rates of 40–60 bpm (or
slightly slower), absent or inverted P waves, and narrow QRS complexes.
PRACTICE EXAM | STUDY GUIDE | TESTBANK | LATEST
UPDATE 2026/2027 | QUESTIONS & 100% CORRECT
ANSWERS
## Table of Contents
1. Cardiac Electrophysiology
2. ECG Interpretation Fundamentals
3. Heart Rate and Rhythm Analysis
4. Sinus Rhythms
5. Atrial Dysrhythmias
6. Junctional Rhythms
7. Ventricular Dysrhythmias
8. Atrioventricular Blocks
9. Pacemaker Rhythms
10. Clinical Priorities and Rhythm Recognition
Introduction
This practice examination is designed to prepare healthcare professionals for the
Basic Arrhythmia Sentara Test using current ECG interpretation standards and
clinical practice expected for the 2026/2027 testing cycle. The examination
emphasizes systematic rhythm analysis, accurate dysrhythmia identification, clinical
decision-making, and recognition of life-threatening cardiac rhythms. Questions
integrate patient scenarios requiring application of electrophysiology, ECG
interpretation principles, and prioritization of appropriate nursing responses.
Candidates should be prepared to evaluate rhythm strips, distinguish similar
dysrhythmias, recognize conduction abnormalities, and determine the urgency of
intervention. This practice exam mirrors the analytical thinking and professional
judgment expected during competency assessments in acute and critical care
settings.
Question 1
,A telemetry strip demonstrates a regular rhythm at 76 beats/minute. Each QRS
complex is preceded by a uniform upright P wave. PR interval measures 0.18
seconds, and QRS duration is 0.08 seconds. Which rhythm is present?
A. Accelerated junctional rhythm
B. Normal sinus rhythm
C. Sinus tachycardia
D. Wandering atrial pacemaker
Correct Answer: B
Explanation: Normal sinus rhythm requires a rate of 60–100 bpm, regular rhythm,
one upright P wave preceding each QRS, PR interval of 0.12–0.20 seconds, and
QRS duration under 0.12 seconds.
Question 2
A patient suddenly becomes unresponsive. The monitor shows a chaotic waveform
without identifiable P waves, QRS complexes, or T waves. What is the priority
intervention?
A. Obtain a 12-lead ECG
B. Begin synchronized cardioversion
C. Initiate CPR and prepare for defibrillation
D. Administer atropine
Correct Answer: C
Explanation: Ventricular fibrillation is a shockable cardiac arrest rhythm requiring
immediate CPR and unsynchronized defibrillation.
,Question 3
Which ECG characteristic most strongly differentiates atrial flutter from atrial
fibrillation?
A. Presence of prolonged PR intervals
B. Sawtooth flutter waves
C. Wide QRS complexes
D. Delta waves
Correct Answer: B
Explanation: Atrial flutter classically produces organized sawtooth flutter waves,
whereas atrial fibrillation lacks organized atrial activity.
Question 4
A rhythm strip demonstrates progressively lengthening PR intervals followed by a
non-conducted P wave. Which conduction disturbance is present?
A. First-degree AV block
B. Second-degree AV block Type I
C. Second-degree AV block Type II
D. Third-degree AV block
Correct Answer: B
Explanation: Mobitz I (Wenckebach) is characterized by progressively prolonged
PR intervals before a dropped QRS complex.
, Question 5
Which rhythm is most likely to reduce cardiac output because atrial contraction is
absent and ventricular response is irregular?
A. Sinus arrhythmia
B. Atrial fibrillation
C. Sinus bradycardia
D. First-degree AV block
Correct Answer: B
Explanation: Atrial fibrillation eliminates effective atrial contraction and often
produces an irregular ventricular response that may impair cardiac output.
Question 6
A patient has a regular ventricular rhythm of 38 bpm with absent P waves and
narrow QRS complexes. Which rhythm is most likely?
A. Idioventricular rhythm
B. Junctional escape rhythm
C. Ventricular tachycardia
D. Sinus arrest
Correct Answer: B
Explanation: Junctional escape rhythms typically have rates of 40–60 bpm (or
slightly slower), absent or inverted P waves, and narrow QRS complexes.
