ADVENT HEALTH EKG 2026
COMPREHENSIVE EXAM QUESTIONS
AND ANSWERS
1. A rhythm strip shows a regular PR interval of 0.24 seconds with a 1:1 P to QRS ratio. What
is the correct interpretation?
A. Second-degree heart block Type I
B. Normal Sinus Rhythm
C. First-degree heart block
D. Third-degree heart block
Answer: C
Conceptual Explanation: First-degree heart block is characterized by a prolonged PR
interval greater than 0.20 seconds with a constant length and a 1:1 conduction ratio.
2. Which lead is most appropriate for assessing the presence of a Right Bundle Branch Block
(RBBB)?
A. Lead II
B. Lead V6
,C. Lead V1
D. Lead aVL
Answer: C
Conceptual Explanation: Lead V1 is the primary lead for identifying RBBB, typically
showing an RSR’ pattern (rabbit ears) and a widened QRS complex.
3. A patient’s EKG shows a sawtooth pattern in leads II, III, and aVF with an atrial rate of 300
bpm. What is the likely rhythm?
A. Atrial Flutter
B. Supraventricular Tachycardia
C. Ventricular Tachycardia
D. Atrial Fibrillation
Answer: A
Conceptual Explanation: Atrial Flutter is distinguished by its characteristic ‘sawtooth’ F-
waves, most visible in the inferior leads.
4. Which EKG change is most indicative of hyperkalemia?
A. ST-segment depression
B. Prominent U waves
C. Shortened PR interval
, D. Tall, peaked T waves
Answer: D
Conceptual Explanation: Tall, symmetrical, peaked T waves are the earliest EKG sign of
hyperkalemia, which can progress to QRS widening and sine wave patterns.
5. ST-segment elevation in leads II, III, and aVF indicates an infarction in which area of the
heart?
A. Inferior wall
B. Lateral wall
C. Septal wall
D. Anterior wall
Answer: A
Conceptual Explanation: Leads II, III, and aVF look at the inferior surface of the heart,
usually supplied by the Right Coronary Artery.
6. What is the hallmark of a Second-degree heart block Mobitz Type I (Wenckebach)?
A. A constant PR interval with dropped QRS complexes
B. No relationship between P waves and QRS complexes
C. A progressive lengthening of the PR interval until a QRS is dropped
D. A shortened PR interval with a delta wave
COMPREHENSIVE EXAM QUESTIONS
AND ANSWERS
1. A rhythm strip shows a regular PR interval of 0.24 seconds with a 1:1 P to QRS ratio. What
is the correct interpretation?
A. Second-degree heart block Type I
B. Normal Sinus Rhythm
C. First-degree heart block
D. Third-degree heart block
Answer: C
Conceptual Explanation: First-degree heart block is characterized by a prolonged PR
interval greater than 0.20 seconds with a constant length and a 1:1 conduction ratio.
2. Which lead is most appropriate for assessing the presence of a Right Bundle Branch Block
(RBBB)?
A. Lead II
B. Lead V6
,C. Lead V1
D. Lead aVL
Answer: C
Conceptual Explanation: Lead V1 is the primary lead for identifying RBBB, typically
showing an RSR’ pattern (rabbit ears) and a widened QRS complex.
3. A patient’s EKG shows a sawtooth pattern in leads II, III, and aVF with an atrial rate of 300
bpm. What is the likely rhythm?
A. Atrial Flutter
B. Supraventricular Tachycardia
C. Ventricular Tachycardia
D. Atrial Fibrillation
Answer: A
Conceptual Explanation: Atrial Flutter is distinguished by its characteristic ‘sawtooth’ F-
waves, most visible in the inferior leads.
4. Which EKG change is most indicative of hyperkalemia?
A. ST-segment depression
B. Prominent U waves
C. Shortened PR interval
, D. Tall, peaked T waves
Answer: D
Conceptual Explanation: Tall, symmetrical, peaked T waves are the earliest EKG sign of
hyperkalemia, which can progress to QRS widening and sine wave patterns.
5. ST-segment elevation in leads II, III, and aVF indicates an infarction in which area of the
heart?
A. Inferior wall
B. Lateral wall
C. Septal wall
D. Anterior wall
Answer: A
Conceptual Explanation: Leads II, III, and aVF look at the inferior surface of the heart,
usually supplied by the Right Coronary Artery.
6. What is the hallmark of a Second-degree heart block Mobitz Type I (Wenckebach)?
A. A constant PR interval with dropped QRS complexes
B. No relationship between P waves and QRS complexes
C. A progressive lengthening of the PR interval until a QRS is dropped
D. A shortened PR interval with a delta wave
