CET EKG Technician Skills and Knowledge Base 4

Question 1

Which EKG finding is associated with hyperkalemia?

Accepted Answer

Tall, peaked T waves

Answer

Prolonged QT interval

Answer

Shortened PR interval

Answer

Deep Q waves

Question 2

During a stress EKG test, the technician's primary responsibility is to:

Accepted Answer

Monitor the patient's EKG and vital signs continuously

Answer

Interpret ST changes and diagnose ischemia

Answer

Increase the treadmill speed at fixed intervals without physician input

Answer

Administer pharmacologic stress agents independently

Question 3

A patient on digoxin therapy may show which classic EKG change?

Accepted Answer

Scooped ST depression (Salvador Dali sign)

Answer

Peaked T waves

Answer

Peaked P waves

Answer

Wide QRS with LBBB morphology

Question 4

Which lead system uses leads I, II, and III together to form an equilateral triangle around the heart?

Accepted Answer

Einthoven's triangle

Answer

Wilson's central terminal

Answer

Goldberger's augmented leads

Answer

The precordial hexaxial system

Question 5

What is the correct action if a patient reports chest pain during a resting EKG procedure?

Accepted Answer

Stop the procedure and immediately alert the nurse or physician

Answer

Complete the EKG and then notify the nurse

Answer

Reassure the patient and continue to finish all 12 leads

Answer

Administer nitroglycerin from the crash cart

Question 6

In a normal EKG, the QRS axis typically falls between:

Accepted Answer

-30° and +110°

Answer

-90° and -30°

Answer

0° and +90°

Answer

+120° and +180°

Question 7

Which rhythm is identified by an irregularly irregular rhythm with no discernible P waves?

Accepted Answer

Atrial fibrillation

Answer

Atrial flutter

Answer

Wandering atrial pacemaker

Answer

Multifocal atrial tachycardia