EKG CLEP EXAM 2026 -
COMPREHENSIVE ADVANCED
PRACTICE QUESTIONS WITH
VERIFIED ANSWERS.NEW UPDATE.
JUST RELEASED
1. Which of the following EKG findings is most characteristic of hyperkalemia?
A. Tall, peaked T waves
B. Shortened QT interval
C. Prominent U waves
D. ST segment elevation
Answer: A
Conceptual Explanation: Hyperkalemia typically presents with tall, peaked, narrow-based
T waves, often appearing before QRS widening occurs.
2. A PR interval that is constant but longer than 0.20 seconds indicates which type of heart
block?
A. Second-degree Mobitz Type II
B. Second-degree Mobitz Type I
C. First-degree AV block
,D. Third-degree AV block
Answer: C
Conceptual Explanation: First-degree AV block is characterized by a delayed conduction
through the AV node, resulting in a PR interval greater than 0.20 seconds that remains
constant.
3. In a patient with Wolf-Parkinson-White (WPW) syndrome, what is the primary
pathophysiological feature seen on the EKG?
A. Inverted P waves
B. Osborne waves
C. Delta wave
D. Biphasic P waves
Answer: C
Conceptual Explanation: WPW syndrome is caused by an accessory pathway (Bundle of
Kent) bypassing the AV node, leading to a slurred upstroke of the QRS complex known as a
delta wave.
4. Which lead is most appropriate for observing the septal wall of the heart?
A. Leads V5 and V6
B. Leads II, III, and aVF
C. Leads I and aVL
, D. Leads V1 and V2
Answer: D
Conceptual Explanation: Leads V1 and V2 are positioned to view the interventricular
septum.
5. What EKG change is commonly associated with digitalis toxicity?
A. Widened QRS with notched R wave
B. Diffuse ST elevation
C. Prolonged PR interval and ‘scooped’ ST segment
D. Pathological Q waves in all leads
Answer: C
Conceptual Explanation: Digitalis effect includes ST segment depression with a
characteristic ‘scooped’ or ‘hockey stick’ appearance and PR interval prolongation.
6. The presence of a ‘sawtooth’ pattern on the EKG baseline is diagnostic for:
A. Atrial Flutter
B. Ventricular Tachycardia
C. Atrial Fibrillation
D. Junctional Rhythm
Answer: A
COMPREHENSIVE ADVANCED
PRACTICE QUESTIONS WITH
VERIFIED ANSWERS.NEW UPDATE.
JUST RELEASED
1. Which of the following EKG findings is most characteristic of hyperkalemia?
A. Tall, peaked T waves
B. Shortened QT interval
C. Prominent U waves
D. ST segment elevation
Answer: A
Conceptual Explanation: Hyperkalemia typically presents with tall, peaked, narrow-based
T waves, often appearing before QRS widening occurs.
2. A PR interval that is constant but longer than 0.20 seconds indicates which type of heart
block?
A. Second-degree Mobitz Type II
B. Second-degree Mobitz Type I
C. First-degree AV block
,D. Third-degree AV block
Answer: C
Conceptual Explanation: First-degree AV block is characterized by a delayed conduction
through the AV node, resulting in a PR interval greater than 0.20 seconds that remains
constant.
3. In a patient with Wolf-Parkinson-White (WPW) syndrome, what is the primary
pathophysiological feature seen on the EKG?
A. Inverted P waves
B. Osborne waves
C. Delta wave
D. Biphasic P waves
Answer: C
Conceptual Explanation: WPW syndrome is caused by an accessory pathway (Bundle of
Kent) bypassing the AV node, leading to a slurred upstroke of the QRS complex known as a
delta wave.
4. Which lead is most appropriate for observing the septal wall of the heart?
A. Leads V5 and V6
B. Leads II, III, and aVF
C. Leads I and aVL
, D. Leads V1 and V2
Answer: D
Conceptual Explanation: Leads V1 and V2 are positioned to view the interventricular
septum.
5. What EKG change is commonly associated with digitalis toxicity?
A. Widened QRS with notched R wave
B. Diffuse ST elevation
C. Prolonged PR interval and ‘scooped’ ST segment
D. Pathological Q waves in all leads
Answer: C
Conceptual Explanation: Digitalis effect includes ST segment depression with a
characteristic ‘scooped’ or ‘hockey stick’ appearance and PR interval prolongation.
6. The presence of a ‘sawtooth’ pattern on the EKG baseline is diagnostic for:
A. Atrial Flutter
B. Ventricular Tachycardia
C. Atrial Fibrillation
D. Junctional Rhythm
Answer: A
