ECG EXAM NYU LANGONE UPDATED ACTUAL QUESTIONS
AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF
CORE DOMAINS
Cardiac Anatomy and Electrophysiology
ECG Waveforms and Intervals
Sinus Rhythms and Arrhythmias
Atrial Arrhythmias
Junctional Rhythms
Ventricular Arrhythmias
Atrioventricular Blocks
Bundle Branch Blocks and Axis Deviation
Myocardial Ischemia and Infarction
Electrolyte Imbalances and Drug Effects
Pacemaker Rhythms
12-Lead ECG Interpretation and Lead Placement
INTRODUCTION
The ECG Examination for NYU Langone assesses the
knowledge and skills required to accurately interpret
electrocardiograms in clinical practice. It covers cardiac
electrophysiology, rhythm analysis, 12-lead interpretation,
and identification of life-threatening arrhythmias. The exam
uses multiple-choice and scenario-based questions to
,evaluate real-world decision-making. Emphasis is placed on
rapid recognition of arrhythmias, measurement of intervals,
and application of evidence-based protocols. Candidates must
demonstrate competency in differentiating benign from
malignant rhythms, identifying ischemia and infarction
patterns, and recognizing the effects of medications and
electrolytes. This assessment ensures technicians and nurses
are prepared to provide safe, effective cardiac monitoring and
respond appropriately to emergent ECG findings.
SECTION ONE: QUESTIONS 1-100
1. A delayed conduction of the AV node is manifested by
which of the following?
A. Prolonged PR interval
B. Widened QRS complex
C. Inverted P wave
D. Absence of a P wave
🟢 Correct answer: A
🔴 RATIONALE: A prolonged PR interval indicates delayed
conduction through the AV node. A widened QRS indicates
ventricular conduction delay. An inverted P wave suggests a
junctional or ectopic atrial focus. Absence of a P wave
indicates atrial fibrillation or another supraventricular
arrhythmia.
,2. Which of the following waveforms represents the
electrical event that should initiate ventricular
contraction?
A. P wave
B. T wave
C. QRS complex
D. U wave
🟢 Correct answer: C
🔴 RATIONALE: The QRS complex represents ventricular
depolarization, which initiates ventricular contraction. The P
wave represents atrial depolarization. The T wave represents
ventricular repolarization. The U wave is a small deflection
that may follow the T wave.
3. What is the normal range of the PR interval?
A. 0.04–0.10 seconds
B. 0.12–0.20 seconds
C. 0.20–0.30 seconds
D. 0.30–0.40 seconds
🟢 Correct answer: B
🔴 RATIONALE: The normal PR interval is 0.12–0.20 seconds
(3–5 small squares). This represents the time from the onset
of atrial depolarization to the onset of ventricular
, depolarization. Shorter intervals suggest pre-excitation;
longer intervals suggest AV block.
4. What is the normal duration of the QRS interval?
A. Below 0.12 seconds
B. 0.12–0.20 seconds
C. 0.20–0.30 seconds
D. Greater than 0.30 seconds
🟢 Correct answer: A
🔴 RATIONALE: A normal QRS duration is less than 0.12
seconds (less than 3 small squares). A QRS of 0.12 seconds
or greater indicates a conduction delay, such as a bundle
branch block or ventricular rhythm.
5. Which of the following describes a cell's ability to
spontaneously generate an impulse?
A. Excitability
B. Conductivity
C. Automaticity
D. Contractility
🟢 Correct answer: C
🔴 RATIONALE: Automaticity is the ability of cardiac cells to
spontaneously generate an electrical impulse. Excitability is
the ability to respond to a stimulus. Conductivity is the
AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF
CORE DOMAINS
Cardiac Anatomy and Electrophysiology
ECG Waveforms and Intervals
Sinus Rhythms and Arrhythmias
Atrial Arrhythmias
Junctional Rhythms
Ventricular Arrhythmias
Atrioventricular Blocks
Bundle Branch Blocks and Axis Deviation
Myocardial Ischemia and Infarction
Electrolyte Imbalances and Drug Effects
Pacemaker Rhythms
12-Lead ECG Interpretation and Lead Placement
INTRODUCTION
The ECG Examination for NYU Langone assesses the
knowledge and skills required to accurately interpret
electrocardiograms in clinical practice. It covers cardiac
electrophysiology, rhythm analysis, 12-lead interpretation,
and identification of life-threatening arrhythmias. The exam
uses multiple-choice and scenario-based questions to
,evaluate real-world decision-making. Emphasis is placed on
rapid recognition of arrhythmias, measurement of intervals,
and application of evidence-based protocols. Candidates must
demonstrate competency in differentiating benign from
malignant rhythms, identifying ischemia and infarction
patterns, and recognizing the effects of medications and
electrolytes. This assessment ensures technicians and nurses
are prepared to provide safe, effective cardiac monitoring and
respond appropriately to emergent ECG findings.
SECTION ONE: QUESTIONS 1-100
1. A delayed conduction of the AV node is manifested by
which of the following?
A. Prolonged PR interval
B. Widened QRS complex
C. Inverted P wave
D. Absence of a P wave
🟢 Correct answer: A
🔴 RATIONALE: A prolonged PR interval indicates delayed
conduction through the AV node. A widened QRS indicates
ventricular conduction delay. An inverted P wave suggests a
junctional or ectopic atrial focus. Absence of a P wave
indicates atrial fibrillation or another supraventricular
arrhythmia.
,2. Which of the following waveforms represents the
electrical event that should initiate ventricular
contraction?
A. P wave
B. T wave
C. QRS complex
D. U wave
🟢 Correct answer: C
🔴 RATIONALE: The QRS complex represents ventricular
depolarization, which initiates ventricular contraction. The P
wave represents atrial depolarization. The T wave represents
ventricular repolarization. The U wave is a small deflection
that may follow the T wave.
3. What is the normal range of the PR interval?
A. 0.04–0.10 seconds
B. 0.12–0.20 seconds
C. 0.20–0.30 seconds
D. 0.30–0.40 seconds
🟢 Correct answer: B
🔴 RATIONALE: The normal PR interval is 0.12–0.20 seconds
(3–5 small squares). This represents the time from the onset
of atrial depolarization to the onset of ventricular
, depolarization. Shorter intervals suggest pre-excitation;
longer intervals suggest AV block.
4. What is the normal duration of the QRS interval?
A. Below 0.12 seconds
B. 0.12–0.20 seconds
C. 0.20–0.30 seconds
D. Greater than 0.30 seconds
🟢 Correct answer: A
🔴 RATIONALE: A normal QRS duration is less than 0.12
seconds (less than 3 small squares). A QRS of 0.12 seconds
or greater indicates a conduction delay, such as a bundle
branch block or ventricular rhythm.
5. Which of the following describes a cell's ability to
spontaneously generate an impulse?
A. Excitability
B. Conductivity
C. Automaticity
D. Contractility
🟢 Correct answer: C
🔴 RATIONALE: Automaticity is the ability of cardiac cells to
spontaneously generate an electrical impulse. Excitability is
the ability to respond to a stimulus. Conductivity is the
