ECG EXAM NYU LANGONE UPDATED ACTUAL QUESTIONS
AND CORRECT ANSWERS
Core Domains
Cardiac Anatomy and Electrophysiology
EKG Interpretation Fundamentals
Cardiac Rhythms and Arrhythmias
Ischemia, Injury, and Infarction Patterns
Clinical Correlation and Emergency Response
Pharmacologic and Electrical Interventions
Monitoring Techniques and Lead Placement
Ethical and Professional Practice in Cardiac Care
Introduction
This examination assesses competency in electrocardiogram
interpretation within a clinical setting. The exam evaluates
foundational knowledge of cardiac electrophysiology,
recognition of normal and abnormal rhythms, and application
of diagnostic reasoning in real-world scenarios. Items are
presented in multiple-choice and scenario-based formats
designed to simulate clinical decision-making. Emphasis is
placed on accurate rhythm identification, appropriate
interventions, and patient safety. The examination challenges
,candidates to integrate waveform analysis, clinical
assessment, and evidence-based practice in cardiac care.
Section One: Questions 1–100
1. A delayed conduction of the AV node is manifested by a:
A. Prolonged PR interval
B. Widened QRS complex
C. Inverted P wave
D. Absence of a P wave
🟢 A. Prolonged PR interval
🔴 RATIONALE: Delayed conduction through the
atrioventricular (AV) node results in a prolonged PR interval,
as the delay occurs between atrial depolarization (P wave)
and ventricular depolarization (QRS complex) .
2. Which node independently conducts at a rate of 40-60
beats per minute in an adult patient?
A. Sinoatrial (SA) node
B. Atrioventricular (AV) node
C. Bundle of His
,D. Purkinje fibers
🟢 B. Atrioventricular (AV) node
🔴 RATIONALE: The AV node has an intrinsic firing rate of
40-60 beats per minute and serves as the heart's secondary
pacemaker when the SA node fails .
3. Which node independently conducts at a rate of 60-100
beats per minute in an adult patient?
A. Sinoatrial (SA) node
B. Atrioventricular (AV) node
C. Bundle of His
D. Purkinje fibers
🟢 A. Sinoatrial (SA) node
🔴 RATIONALE: The SA node is the primary pacemaker with
an intrinsic rate of 60-100 bpm .
4. Which of the following waveforms represents the
electrical event that should initiate ventricular contraction?
A. P wave
B. QRS complex
, C. T wave
D. PR interval
🟢 B. QRS complex
🔴 RATIONALE: The QRS complex represents ventricular
depolarization, which initiates ventricular contraction .
5. What is the normal range of the PR interval?
A. 0.08-0.10 seconds
B. 0.12-0.20 seconds
C. 0.20-0.30 seconds
D. 0.50-0.80 seconds
🟢 B. 0.12-0.20 seconds
🔴 RATIONALE: The normal PR interval is 0.12-0.20 seconds
(3-5 small boxes on EKG paper) .
6. What is the normal length of the QRS interval?
A. Less than 0.12 seconds
B. 0.12-0.20 seconds
C. Greater than 0.20 seconds
AND CORRECT ANSWERS
Core Domains
Cardiac Anatomy and Electrophysiology
EKG Interpretation Fundamentals
Cardiac Rhythms and Arrhythmias
Ischemia, Injury, and Infarction Patterns
Clinical Correlation and Emergency Response
Pharmacologic and Electrical Interventions
Monitoring Techniques and Lead Placement
Ethical and Professional Practice in Cardiac Care
Introduction
This examination assesses competency in electrocardiogram
interpretation within a clinical setting. The exam evaluates
foundational knowledge of cardiac electrophysiology,
recognition of normal and abnormal rhythms, and application
of diagnostic reasoning in real-world scenarios. Items are
presented in multiple-choice and scenario-based formats
designed to simulate clinical decision-making. Emphasis is
placed on accurate rhythm identification, appropriate
interventions, and patient safety. The examination challenges
,candidates to integrate waveform analysis, clinical
assessment, and evidence-based practice in cardiac care.
Section One: Questions 1–100
1. A delayed conduction of the AV node is manifested by a:
A. Prolonged PR interval
B. Widened QRS complex
C. Inverted P wave
D. Absence of a P wave
🟢 A. Prolonged PR interval
🔴 RATIONALE: Delayed conduction through the
atrioventricular (AV) node results in a prolonged PR interval,
as the delay occurs between atrial depolarization (P wave)
and ventricular depolarization (QRS complex) .
2. Which node independently conducts at a rate of 40-60
beats per minute in an adult patient?
A. Sinoatrial (SA) node
B. Atrioventricular (AV) node
C. Bundle of His
,D. Purkinje fibers
🟢 B. Atrioventricular (AV) node
🔴 RATIONALE: The AV node has an intrinsic firing rate of
40-60 beats per minute and serves as the heart's secondary
pacemaker when the SA node fails .
3. Which node independently conducts at a rate of 60-100
beats per minute in an adult patient?
A. Sinoatrial (SA) node
B. Atrioventricular (AV) node
C. Bundle of His
D. Purkinje fibers
🟢 A. Sinoatrial (SA) node
🔴 RATIONALE: The SA node is the primary pacemaker with
an intrinsic rate of 60-100 bpm .
4. Which of the following waveforms represents the
electrical event that should initiate ventricular contraction?
A. P wave
B. QRS complex
, C. T wave
D. PR interval
🟢 B. QRS complex
🔴 RATIONALE: The QRS complex represents ventricular
depolarization, which initiates ventricular contraction .
5. What is the normal range of the PR interval?
A. 0.08-0.10 seconds
B. 0.12-0.20 seconds
C. 0.20-0.30 seconds
D. 0.50-0.80 seconds
🟢 B. 0.12-0.20 seconds
🔴 RATIONALE: The normal PR interval is 0.12-0.20 seconds
(3-5 small boxes on EKG paper) .
6. What is the normal length of the QRS interval?
A. Less than 0.12 seconds
B. 0.12-0.20 seconds
C. Greater than 0.20 seconds
