Chapter Three

Question 0

Augmented

Answer 0

Normally small ECG lead tracings that are increased in size by the ECG machine in order to be interpreted

Question 1

Artifact

Answer 1

Unwanted marks on the ECG tracing caused by activity other than the heart’s electrical activity

Question 2

Bipolar

Answer 2

A type of ECG lead that measures the flow of electrical current in two directions at the same time

Question 3

Bradycardia

Answer 3

A slow heart rate, usually less than 60 beats per minute

Question 4

Einthoven triangle

Answer 4

Triangle formed by three of the limb electrodes– the left arm, the right arm, and the left leg; it’s used to determine the first six leads of the 12-lead ECG

Question 5

Electrodes

Answer 5

Small sensors, metal plates, or disposable units placed on the skin during an ECG to receive the electrical activity from the heart

Question 6

Gain

Answer 6

A control on the ECG machine that increases or decreases the size of the ECG tracing

Question 7

Input

Answer 7

Date entered into an ECG machine, usually through electrodes on the skin surface

Question 8

Lead

Answer 8

A conductor attached to the ECG machine in the form of a covered wire

Question 9

Limb

Answer 9

An arm or a leg

Question 10

Mm (millimeter)

Answer 10

A unit of measurement to indicate time on the ECG tracing. The time is measured on the horizontal axis