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Chapter 12

Amplitude Refers to amount, extent, size, abundance, or fullness.
Artifact Additional electrical activity picked up by the electrocardiograph that interferes with the normal appearance of the ECG cycles.
Artherosclerosis Buildup of fibrous plaques of fatty deposits and cholesterol on the inner walls of the coronary arteries.
Baseline The flat horizontal line that seperates the various waves of the ECG cycle.
Cardiac cycle One complete heartbeat.
Dysrhythmia An irregular heart rhythm; also termed arrhythmia.
ECG cycle The graphic representation of a heartbeat.
Electrocardiogram (ECG) The graphic representation of the electrical activity of the heart.
Electrocardiograph The instrument used to record the electrical activity of the heart.
Electrode A conductor of electricity, which is used to promote contact between the body and the electrocardigraph.
Electrolyte A chemical substance that promotes conduction of an electical current.
Interval The length of a wave or the length of a wave with a segment.
Ischemia Deficiency of blood in a body part.
Normal sinus rhythm Refers to an ECG that is within normal limits.
Segment The portion of the ECG between two waves.
Spirometer An instrument for measuring air taken into and expelled from the lungs.
Spirometry Measurement of an individual's breathing capacity by means of a spirometer.
Created by: RachelPenwell