EKG certification Certification FREE EKG Certification General Question and Answers 2

Question 1

Which lead is best for continuous cardiac monitoring in most clinical settings?

Accepted Answer

Lead II

Answer

Lead II provides the best view of the heart's electrical activity along its normal axis, making it the standard for continuous monitoring.

Question 2

What does an isoelectric ST segment indicate on an EKG?

Accepted Answer

Normal repolarization

Answer

An isoelectric ST segment, level with the baseline, indicates normal ventricular repolarization without ischemia or injury.

Question 3

A patient's EKG shows a PR interval of 0.28 seconds. What does this suggest?

Accepted Answer

First-degree AV block

Answer

A PR interval greater than 0.20 seconds with consistent P-to-QRS conduction indicates first-degree AV block.

Question 4

Which artifact on an EKG is most commonly caused by patient movement?

Accepted Answer

Somatic tremor

Answer

Somatic tremor artifact results from voluntary or involuntary muscle movement by the patient during recording.

Question 5

What is the standard paper speed used when recording a 12-lead EKG?

Accepted Answer

25 mm/sec

Answer

The standard paper speed for EKG recording is 25 mm/sec, where each small box represents 0.04 seconds.

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