HOAG ECG EXAM /APPROVED
HOAG ECG EXAM ACTUAL
2026/2027 & HIGH YIELD
PRACTICE QUESTIONS
HOAG ECG EXAM /APPROVED HOAG ECG EXAM |
Comprehensive Examination
HOAG ECG EXAM /APPROVED HOAG ECG EXAM
ACTUAL 2026/2027 & HIGH YIELD PRACTICE
QUESTIONS ACCURATE EXAM COMPLETE ACTUAL
INTRODUCTION
This document is an important and very helpful preparation
resource for HOAG ECG EXAM /APPROVED HOAG ECG
EXAM ACTUAL 2026/2027 & HIGH YIELD PRACTICE
QUESTIONS ACCURATE EXAM COMPLETE ACTUAL
QUESTIONS AND CORRECT VERIFIED ANSWERS WITH
DETAILED RATIONALES (RELIABLE ANSWERS)
CURRENTLY UPDATED VERSION 2026 EDITION
GUARANTEED PASS. Every item uses a focused exam stem,
four response options, a keyed response, and a clear rationale,
making it easier to understand the subject, spot distractors, and
build real exam confidence.
Page 1
, Question 1
A 12-lead ECG shows a regular narrow-complex tachycardia at 150 bpm. The
rhythm strip reveals a P wave immediately following each QRS, with a PR
interval that is too short to measure, and the P waves are inverted in leads II,
III, and aVF. Which maneuver would most likely terminate this arrhythmia?
A. Carotid sinus massage
B. Valsalva maneuver
C. Adenosine administration
D. Electrical cardioversion
Correct Answer: C - Adenosine administration
RATIONALE
The description is classic for AV nodal reentrant tachycardia (AVNRT)
with retrograde P waves; adenosine is first-line for termination.
Carotid massage and Valsalva may also terminate but are less reliable;
cardioversion is reserved for hemodynamic instability.
Question 2
Which ECG finding is most specific for left anterior fascicular block (LAFB)
in the presence of right bundle branch block (RBBB)?
A. Left axis deviation (-45° to -90°)
B. Dominant R wave in V1
C. qR pattern in aVL
D. Prolonged QRS >120 ms
Correct Answer: A - Left axis deviation (-45° to -90°)
RATIONALE
LAFB is diagnosed by left axis deviation (-45° to -90°) with qR in
aVL and rS in inferior leads. RBBB alone does not cause left axis
deviation; thus, left axis deviation is the specific marker for
bifascicular block (RBBB + LAFB).
Page 2
, Question 3
Which electrolyte abnormality is most likely to produce the ECG pattern of a
prolonged QT interval with a prominent U wave and flattened T waves?
A. Hyperkalemia
B. Hypokalemia
C. Hypercalcemia
D. Hypomagnesemia
Correct Answer: B - Hypokalemia
RATIONALE
Hypokalemia classically causes QT prolongation, U waves, and
flattened T waves. Hyperkalemia causes peaked T waves and QRS
widening; hypercalcemia shortens QT; hypomagnesemia can also
prolong QT but U waves are less prominent.
Question 4
A 12-lead ECG reveals a paced rhythm with a spike before each QRS. The
spikes are present but the QRS complexes are absent. What is the most likely
cause?
A. Failure to capture
B. Failure to sense
C. Oversensing
D. Pacemaker-mediated tachycardia
Correct Answer: A - Failure to capture
RATIONALE
Failure to capture occurs when the pacemaker fires (spike) but does
not depolarize the myocardium, resulting in no QRS. Failure to sense
would show spikes at inappropriate times; oversensing inhibits pacing;
PMT causes tachycardia.
Page 3
HOAG ECG EXAM ACTUAL
2026/2027 & HIGH YIELD
PRACTICE QUESTIONS
HOAG ECG EXAM /APPROVED HOAG ECG EXAM |
Comprehensive Examination
HOAG ECG EXAM /APPROVED HOAG ECG EXAM
ACTUAL 2026/2027 & HIGH YIELD PRACTICE
QUESTIONS ACCURATE EXAM COMPLETE ACTUAL
INTRODUCTION
This document is an important and very helpful preparation
resource for HOAG ECG EXAM /APPROVED HOAG ECG
EXAM ACTUAL 2026/2027 & HIGH YIELD PRACTICE
QUESTIONS ACCURATE EXAM COMPLETE ACTUAL
QUESTIONS AND CORRECT VERIFIED ANSWERS WITH
DETAILED RATIONALES (RELIABLE ANSWERS)
CURRENTLY UPDATED VERSION 2026 EDITION
GUARANTEED PASS. Every item uses a focused exam stem,
four response options, a keyed response, and a clear rationale,
making it easier to understand the subject, spot distractors, and
build real exam confidence.
Page 1
, Question 1
A 12-lead ECG shows a regular narrow-complex tachycardia at 150 bpm. The
rhythm strip reveals a P wave immediately following each QRS, with a PR
interval that is too short to measure, and the P waves are inverted in leads II,
III, and aVF. Which maneuver would most likely terminate this arrhythmia?
A. Carotid sinus massage
B. Valsalva maneuver
C. Adenosine administration
D. Electrical cardioversion
Correct Answer: C - Adenosine administration
RATIONALE
The description is classic for AV nodal reentrant tachycardia (AVNRT)
with retrograde P waves; adenosine is first-line for termination.
Carotid massage and Valsalva may also terminate but are less reliable;
cardioversion is reserved for hemodynamic instability.
Question 2
Which ECG finding is most specific for left anterior fascicular block (LAFB)
in the presence of right bundle branch block (RBBB)?
A. Left axis deviation (-45° to -90°)
B. Dominant R wave in V1
C. qR pattern in aVL
D. Prolonged QRS >120 ms
Correct Answer: A - Left axis deviation (-45° to -90°)
RATIONALE
LAFB is diagnosed by left axis deviation (-45° to -90°) with qR in
aVL and rS in inferior leads. RBBB alone does not cause left axis
deviation; thus, left axis deviation is the specific marker for
bifascicular block (RBBB + LAFB).
Page 2
, Question 3
Which electrolyte abnormality is most likely to produce the ECG pattern of a
prolonged QT interval with a prominent U wave and flattened T waves?
A. Hyperkalemia
B. Hypokalemia
C. Hypercalcemia
D. Hypomagnesemia
Correct Answer: B - Hypokalemia
RATIONALE
Hypokalemia classically causes QT prolongation, U waves, and
flattened T waves. Hyperkalemia causes peaked T waves and QRS
widening; hypercalcemia shortens QT; hypomagnesemia can also
prolong QT but U waves are less prominent.
Question 4
A 12-lead ECG reveals a paced rhythm with a spike before each QRS. The
spikes are present but the QRS complexes are absent. What is the most likely
cause?
A. Failure to capture
B. Failure to sense
C. Oversensing
D. Pacemaker-mediated tachycardia
Correct Answer: A - Failure to capture
RATIONALE
Failure to capture occurs when the pacemaker fires (spike) but does
not depolarize the myocardium, resulting in no QRS. Failure to sense
would show spikes at inappropriate times; oversensing inhibits pacing;
PMT causes tachycardia.
Page 3
