ADVENT HEALTH EKG FINAL EXAM
(LATEST 2026/ 2027 UPDATE)
QUESTIONS AND ANSWERS
1. Which electrolyte imbalance is most likely associated with the presence of prominent U-
waves and a flattened T-wave on an EKG?
A. Hyperkalemia
B. Hypokalemia
C. Hypercalcemia
D. Hyponatremia
Answer: B
Conceptual Explanation: Hypokalemia typically presents with ST depression, flattened T-
waves, and prominent U-waves. Hyperkalemia would show peaked T-waves.
2. A PR interval that is constant but exceeds 0.20 seconds indicates which type of heart block?
A. First-degree AV Block
B. Second-degree AV Block Type I
C. Second-degree AV Block Type II
,D. Third-degree AV Block
Answer: A
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 Second-degree AV Block, Type I (Wenckebach), what is the characteristic behavior of
the PR interval?
A. It progressively lengthens until a QRS is dropped.
B. It progressively shortens until a QRS is dropped.
C. It remains constant until a QRS is dropped.
D. It is completely inconsistent with no relation to the QRS.
Answer: A
Conceptual Explanation: Wenckebach (Mobitz I) is defined by a progressive prolongation
of the PR interval until a P-wave is not followed by a QRS complex.
4. Which lead is considered the best for viewing atrial activity and identifying RSR’ patterns in
Right Bundle Branch Block?
A. Lead II
B. Lead V1
C. Lead V6
, D. Lead aVL
Answer: B
Conceptual Explanation: Lead V1 is positioned directly over the right side of the heart,
making it ideal for seeing the RSR’ pattern of a Right Bundle Branch Block (RBBB).
5. What is the intrinsic firing rate of the Atrioventricular (AV) junction?
A. 60-100 bpm
B. 20-40 bpm
C. 40-60 bpm
D. 100-150 bpm
Answer: C
Conceptual Explanation: The AV junction acts as a secondary pacemaker with an intrinsic
rate of 40-60 beats per minute.
6. An EKG rhythm shows a ‘sawtooth’ pattern between QRS complexes. What is the most
likely diagnosis?
A. Atrial Fibrillation
B. Supraventricular Tachycardia
C. Ventricular Tachycardia
D. Atrial Flutter
(LATEST 2026/ 2027 UPDATE)
QUESTIONS AND ANSWERS
1. Which electrolyte imbalance is most likely associated with the presence of prominent U-
waves and a flattened T-wave on an EKG?
A. Hyperkalemia
B. Hypokalemia
C. Hypercalcemia
D. Hyponatremia
Answer: B
Conceptual Explanation: Hypokalemia typically presents with ST depression, flattened T-
waves, and prominent U-waves. Hyperkalemia would show peaked T-waves.
2. A PR interval that is constant but exceeds 0.20 seconds indicates which type of heart block?
A. First-degree AV Block
B. Second-degree AV Block Type I
C. Second-degree AV Block Type II
,D. Third-degree AV Block
Answer: A
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 Second-degree AV Block, Type I (Wenckebach), what is the characteristic behavior of
the PR interval?
A. It progressively lengthens until a QRS is dropped.
B. It progressively shortens until a QRS is dropped.
C. It remains constant until a QRS is dropped.
D. It is completely inconsistent with no relation to the QRS.
Answer: A
Conceptual Explanation: Wenckebach (Mobitz I) is defined by a progressive prolongation
of the PR interval until a P-wave is not followed by a QRS complex.
4. Which lead is considered the best for viewing atrial activity and identifying RSR’ patterns in
Right Bundle Branch Block?
A. Lead II
B. Lead V1
C. Lead V6
, D. Lead aVL
Answer: B
Conceptual Explanation: Lead V1 is positioned directly over the right side of the heart,
making it ideal for seeing the RSR’ pattern of a Right Bundle Branch Block (RBBB).
5. What is the intrinsic firing rate of the Atrioventricular (AV) junction?
A. 60-100 bpm
B. 20-40 bpm
C. 40-60 bpm
D. 100-150 bpm
Answer: C
Conceptual Explanation: The AV junction acts as a secondary pacemaker with an intrinsic
rate of 40-60 beats per minute.
6. An EKG rhythm shows a ‘sawtooth’ pattern between QRS complexes. What is the most
likely diagnosis?
A. Atrial Fibrillation
B. Supraventricular Tachycardia
C. Ventricular Tachycardia
D. Atrial Flutter
