EKG CLEP PRACTICE EXAM
QUESTIONS WITH VERIFIED
ANSWERS.NEW UPDATE. JUST
RELEASED
1. Which of the following represents the total time for ventricular depolarization and
repolarization?
A. PR interval
B. QRS complex
C. QT interval
D. ST segment
Answer: C
Conceptual Explanation: The QT interval measures the time from the start of ventricular
depolarization to the end of ventricular repolarization.
2. In a standard 12-lead EKG, which leads view the inferior wall of the left ventricle?
A. V1, V2, V3
B. II, III, aVF
C. I, aVL, V5, V6
D. V3, V4
,Answer: B
Conceptual Explanation: Leads II, III, and aVF are oriented toward the inferior surface of
the heart, primarily supplied by the Right Coronary Artery.
3. A prolonged PR interval greater than 0.20 seconds, with a constant duration and no
dropped QRS complexes, defines which condition?
A. Third-degree AV block
B. Second-degree Mobitz I
C. Second-degree Mobitz II
D. First-degree AV block
Answer: D
Conceptual Explanation: First-degree AV block is characterized by a delayed but
consistent conduction through the AV node, resulting in a PR interval >0.20s.
4. What is the characteristic EKG finding associated with Wolff-Parkinson-White (WPW)
syndrome?
A. Delta wave
B. U waves
C. Osborn waves
D. J waves
Answer: A
, Conceptual Explanation: WPW syndrome involves an accessory pathway (Bundle of
Kent) that bypasses the AV node, causing early ventricular activation seen as a delta wave.
5. Which electrolyte abnormality is most likely to cause tall, peaked T waves and a widened
QRS complex?
A. Hypokalemia
B. Hypercalcemia
C. Hyponatremia
D. Hyperkalemia
Answer: D
Conceptual Explanation: Hyperkalemia initially causes narrow, peaked T waves and can
progress to QRS widening and loss of P waves as levels rise.
6. The presence of an ‘R-S-R prime’ (RSR’) pattern in lead V1 with a QRS duration of 0.14
seconds is indicative of:
A. Left Bundle Branch Block
B. Right Bundle Branch Block
C. Left Anterior Fascicular Block
D. Right Ventricular Hypertrophy
Answer: B
QUESTIONS WITH VERIFIED
ANSWERS.NEW UPDATE. JUST
RELEASED
1. Which of the following represents the total time for ventricular depolarization and
repolarization?
A. PR interval
B. QRS complex
C. QT interval
D. ST segment
Answer: C
Conceptual Explanation: The QT interval measures the time from the start of ventricular
depolarization to the end of ventricular repolarization.
2. In a standard 12-lead EKG, which leads view the inferior wall of the left ventricle?
A. V1, V2, V3
B. II, III, aVF
C. I, aVL, V5, V6
D. V3, V4
,Answer: B
Conceptual Explanation: Leads II, III, and aVF are oriented toward the inferior surface of
the heart, primarily supplied by the Right Coronary Artery.
3. A prolonged PR interval greater than 0.20 seconds, with a constant duration and no
dropped QRS complexes, defines which condition?
A. Third-degree AV block
B. Second-degree Mobitz I
C. Second-degree Mobitz II
D. First-degree AV block
Answer: D
Conceptual Explanation: First-degree AV block is characterized by a delayed but
consistent conduction through the AV node, resulting in a PR interval >0.20s.
4. What is the characteristic EKG finding associated with Wolff-Parkinson-White (WPW)
syndrome?
A. Delta wave
B. U waves
C. Osborn waves
D. J waves
Answer: A
, Conceptual Explanation: WPW syndrome involves an accessory pathway (Bundle of
Kent) that bypasses the AV node, causing early ventricular activation seen as a delta wave.
5. Which electrolyte abnormality is most likely to cause tall, peaked T waves and a widened
QRS complex?
A. Hypokalemia
B. Hypercalcemia
C. Hyponatremia
D. Hyperkalemia
Answer: D
Conceptual Explanation: Hyperkalemia initially causes narrow, peaked T waves and can
progress to QRS widening and loss of P waves as levels rise.
6. The presence of an ‘R-S-R prime’ (RSR’) pattern in lead V1 with a QRS duration of 0.14
seconds is indicative of:
A. Left Bundle Branch Block
B. Right Bundle Branch Block
C. Left Anterior Fascicular Block
D. Right Ventricular Hypertrophy
Answer: B
