ADVENT HEALTH EKG COMPETENCY ACTUAL EXAM
QUESTIONS & VERIFIED ANSWERS COMPLETE
RHYTHMS & HEART BLOCKS MASTER STUDY GUIDE
Master the 2026 Advent Health EKG Competency Exam with this
comprehensive question practice test bank featuring verified
answers and highly detailed rationales. This study guide covers
critical cardiac rhythms, heart blocks, pacemaker malfunctions,
and electrophysiology concepts directly aligned with official
exam criteria. It is the ultimate high-yield resource designed to
help healthcare professionals and nursing students guarantee a
100% score on their first attempt.
1. Which of the following represents the normal
duration of a PR interval?
A) 0.04 to 0.10 seconds
B) 0.06 to 0.12 seconds
C) 0.12 to 0.20 seconds
D) 0.20 to 0.40 seconds
Answer: C
Rationale: A normal PR interval is between 0.12
and 0.20 seconds (three to five small boxes),
representing the time it takes for an impulse to
travel from the SA node through the AV node.
2. A regular rhythm with a heart rate of 45 beats
per minute, normal PR intervals, and normal
QRS complexes is classified as:
, A) Sinus Rhythm
B) Sinus Bradycardia
C) Junctional Rhythm
D) First-Degree AV Block
Answer: B
Rationale: Sinus bradycardia meets all the
criteria of a normal sinus rhythm, except the
intrinsic firing rate of the SA node drops below
60 beats per minute.
3. Which EKG finding is the hallmark
characteristic of a Third-Degree (Complete) AV
Block?
A) Progressively lengthening PR intervals
B) Completely independent P waves and QRS
complexes
C) Fixed PR intervals with dropped QRS
complexes
D) A PR interval longer than 0.20 seconds with
a 1:1 conduction ratio
Answer: B
Rationale: In a third-degree AV block, there is a
total lack of conduction between the atria and
ventricles, causing the P waves and QRS
, complexes to march out completely
independently of each other.
4. A widening QRS complex measuring 0.14
seconds with a notched "M-shaped" R wave in
lead V6 is highly suggestive of:
A) Right Bundle Branch Block
B) Left Bundle Branch Block
C) Left Anterior Fascicular Block
D) Left Posterior Fascicular Block
Answer: B
Rationale: A Left Bundle Branch Block (LBBB)
features a prolonged QRS duration of 0.12
seconds or greater, accompanied by
characteristic broad or notched R waves in the
lateral leads (I, aVL, V5, V6).
5. What does the T wave on an EKG trace
represent?
A) Atrial depolarization
B) Atrial repolarization
C) Ventricular depolarization
D) Ventricular repolarization
Answer: D
Rationale: The T wave represents the electrical
, recovery and repolarization phase of the
ventricular myocardium.
6. Which dysrhythmia is characterized by a totally
irregular rhythm, no discernible P waves, and a
chaotic baseline?
A) Atrial Flutter
B) Atrial Fibrillation
C) Ventricular Tachycardia
D) Wandering Atrial Pacemaker
Answer: B
Rationale: Atrial fibrillation occurs due to
disorganized, multiple electrical circuits in the
atria, causing a chaotic baseline without distinct
P waves and an irregularly irregular ventricular
response.
7. A patient’s rhythm strip shows a sudden,
unexpected pause in an otherwise normal sinus
rhythm, where the length of the pause is not a
multiple of the normal P-P interval. This is best
described as:
A) Sinus Arrest
B) Sinus Block
C) Sinus Bradycardia
D) Sinoatrial Exit Block
QUESTIONS & VERIFIED ANSWERS COMPLETE
RHYTHMS & HEART BLOCKS MASTER STUDY GUIDE
Master the 2026 Advent Health EKG Competency Exam with this
comprehensive question practice test bank featuring verified
answers and highly detailed rationales. This study guide covers
critical cardiac rhythms, heart blocks, pacemaker malfunctions,
and electrophysiology concepts directly aligned with official
exam criteria. It is the ultimate high-yield resource designed to
help healthcare professionals and nursing students guarantee a
100% score on their first attempt.
1. Which of the following represents the normal
duration of a PR interval?
A) 0.04 to 0.10 seconds
B) 0.06 to 0.12 seconds
C) 0.12 to 0.20 seconds
D) 0.20 to 0.40 seconds
Answer: C
Rationale: A normal PR interval is between 0.12
and 0.20 seconds (three to five small boxes),
representing the time it takes for an impulse to
travel from the SA node through the AV node.
2. A regular rhythm with a heart rate of 45 beats
per minute, normal PR intervals, and normal
QRS complexes is classified as:
, A) Sinus Rhythm
B) Sinus Bradycardia
C) Junctional Rhythm
D) First-Degree AV Block
Answer: B
Rationale: Sinus bradycardia meets all the
criteria of a normal sinus rhythm, except the
intrinsic firing rate of the SA node drops below
60 beats per minute.
3. Which EKG finding is the hallmark
characteristic of a Third-Degree (Complete) AV
Block?
A) Progressively lengthening PR intervals
B) Completely independent P waves and QRS
complexes
C) Fixed PR intervals with dropped QRS
complexes
D) A PR interval longer than 0.20 seconds with
a 1:1 conduction ratio
Answer: B
Rationale: In a third-degree AV block, there is a
total lack of conduction between the atria and
ventricles, causing the P waves and QRS
, complexes to march out completely
independently of each other.
4. A widening QRS complex measuring 0.14
seconds with a notched "M-shaped" R wave in
lead V6 is highly suggestive of:
A) Right Bundle Branch Block
B) Left Bundle Branch Block
C) Left Anterior Fascicular Block
D) Left Posterior Fascicular Block
Answer: B
Rationale: A Left Bundle Branch Block (LBBB)
features a prolonged QRS duration of 0.12
seconds or greater, accompanied by
characteristic broad or notched R waves in the
lateral leads (I, aVL, V5, V6).
5. What does the T wave on an EKG trace
represent?
A) Atrial depolarization
B) Atrial repolarization
C) Ventricular depolarization
D) Ventricular repolarization
Answer: D
Rationale: The T wave represents the electrical
, recovery and repolarization phase of the
ventricular myocardium.
6. Which dysrhythmia is characterized by a totally
irregular rhythm, no discernible P waves, and a
chaotic baseline?
A) Atrial Flutter
B) Atrial Fibrillation
C) Ventricular Tachycardia
D) Wandering Atrial Pacemaker
Answer: B
Rationale: Atrial fibrillation occurs due to
disorganized, multiple electrical circuits in the
atria, causing a chaotic baseline without distinct
P waves and an irregularly irregular ventricular
response.
7. A patient’s rhythm strip shows a sudden,
unexpected pause in an otherwise normal sinus
rhythm, where the length of the pause is not a
multiple of the normal P-P interval. This is best
described as:
A) Sinus Arrest
B) Sinus Block
C) Sinus Bradycardia
D) Sinoatrial Exit Block
