Ekg Clep Exam Review Questions With Verified Answers.new Update. Just Released

EKG INTERPRETATION AND CLINICAL
CARDIOLOGY EXAM QUESTIONS WITH
VERIFIED ANSWERS.NEW UPDATE.
JUST RELEASED


1. What is the primary pacemaker of the heart, typically initiating impulses at a rate of 60 to

100 beats per minute?

A. AV Node


B. Purkinje fibers


C. SA Node


D. Bundle of His


Answer: C


Conceptual Explanation: The Sinoatrial (SA) node is the heart’s natural pacemaker,

located in the right atrium.


2. On standard EKG paper, what is the time duration represented by one small 1mm square?

A. 0.12 seconds


B. 0.04 seconds


C. 0.20 seconds


D. 0.40 seconds

,Answer: B


Conceptual Explanation: Standard EKG paper runs at 25mm/sec; therefore, one small

block (1mm) equals 0.04 seconds.


3. A PR interval measuring 0.24 seconds is indicative of which condition?

A. Normal Sinus Rhythm


B. Third-degree AV block


C. Second-degree AV block Type I


D. First-degree AV block


Answer: D


Conceptual Explanation: A PR interval greater than 0.20 seconds (five small boxes)

defines a first-degree AV block.


4. Which lead is placed at the fourth intercostal space at the right sternal border?

A. V4


B. V2


C. V1


D. V6


Answer: C

, Conceptual Explanation: Lead V1 is positioned in the 4th intercostal space just to the

right of the sternum.


5. What does the QRS complex represent on an EKG tracing?

A. Ventricular depolarization


B. Ventricular repolarization


C. Atrial repolarization


D. Atrial depolarization


Answer: A


Conceptual Explanation: The QRS complex indicates the electrical activation

(depolarization) of the ventricles.


6. Which heart rhythm is characterized by a ‘sawtooth’ pattern of F-waves?

A. Atrial fibrillation


B. Atrial flutter


C. Ventricular tachycardia


D. Premature Atrial Contraction


Answer: B


Conceptual Explanation: Atrial flutter typically presents with rapid, regular, sawtooth-

shaped atrial waves.