ECG ECG Lead Placement and Technique 4

Question 1

What is the most likely cause of a wandering baseline on the ECG tracing?

Accepted Answer

Patient movement or breathing

Answer

AC electrical interference

Answer

Correct electrode placement

Answer

High paper speed

Question 2

A fine, rapid, uniform tremor artifact at 60 Hz most likely indicates:

Accepted Answer

AC (electrical) interference

Answer

Muscle tremor

Answer

Loose lead wire

Answer

Patient shivering

Question 3

Before applying electrodes to a hairy chest, the technician should:

Accepted Answer

Clip or shave the hair at the site

Answer

Apply extra gel only

Answer

Press harder on the electrode

Answer

Skip that lead

Question 4

Irregular, jittery, coarse artifact that varies with patient tension suggests:

Accepted Answer

Somatic (muscle) tremor

Answer

AC interference

Answer

Standardization error

Answer

Correct tracing

Question 5

To prepare skin for electrode placement, the technician should first:

Accepted Answer

Clean and lightly abrade the site

Answer

Apply electrode directly to oily skin

Answer

Warm the skin with a heat lamp

Answer

Rub lotion on the site

Question 6

A flat line on a single lead while others record normally most likely means:

Accepted Answer

A disconnected or broken lead wire

Answer

Cardiac arrest

Answer

Too much gel

Answer

Normal finding

Question 7

The standard ECG paper speed used in the United States is:

Accepted Answer

25 mm/sec

Answer

10 mm/sec

Answer

50 mm/sec

Answer

100 mm/sec