EKG certification Certification FREE EKG Technician Certification Question and Answers 3

Question 1

When performing a resting 12-lead EKG, what should the paper speed be set to by default?

Accepted Answer

25 mm/sec

Answer

The standard paper speed for a resting 12-lead EKG is 25 mm/sec, which allows proper measurement of intervals and waveform durations.

Question 2

An EKG technician obtains a tracing showing a regular narrow-complex tachycardia at 150 bpm with sawtooth-shaped waves. What is the most likely rhythm?

Accepted Answer

Atrial flutter with 2:1 block

Answer

A regular narrow-complex tachycardia at exactly 150 bpm with sawtooth baseline waves is the classic presentation of atrial flutter with 2:1 conduction.

Question 3

Which artifact appears as a regular, rapid, small-amplitude interference pattern on an EKG tracing?

Accepted Answer

60-cycle (AC) interference

Answer

60-cycle or AC interference creates a uniform, fine, rapid oscillation pattern caused by electrical current from nearby power sources.

Question 4

ST segment elevation in leads V1 through V4 most likely indicates ischemia in which coronary artery territory?

Accepted Answer

Left anterior descending artery

Answer

Leads V1-V4 correspond to the anterior wall of the heart, which is supplied by the left anterior descending artery.

Question 5

What is the correct limb lead placement for the right arm electrode?

Accepted Answer

Anywhere on the right arm between shoulder and wrist, avoiding bony prominences

Answer

The right arm electrode can be placed anywhere on the right arm between the shoulder and wrist, as long as bony prominences and areas of excessive movement are avoided.

EKG certification Practice Test

EKG certification Practice Test

EKG certification Certification FREE EKG Technician Certification Question and Answers 3