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EKG

TermDefinition
artifact Alteration or interference on the EKG that is not related to cardiac electrical activity; appears as distorted lines or waves.
atrial flutter A single area within the atrial tissue firing at a faster rate than the rate the ventricles are responding to.
electrocardiogram (EKG) A cardiac test that records electrical activity of the heart, provides information about heart rate and rhythm, and can show evidence of a previous heart attack.
Holter monitor A portable device for cardiac monitoring that is worn for at least 24 hours.
premature atrial contractions A premature contraction that results when the atria are triggered to contract earlier than they should.
premature ventricular contractions Premature contractions in the ventricles.
sinus rhythm Rhythm that originates from the sinus (SA) node and describes the characteristic rhythm of the human heart.
stress testing Monitoring the heart during exercise on a treadmill or stationary bike to evaluate how the heart responds to stress.
ventricular fibrillation A type of abnormal heart rhythm in which ventricles twitch or quiver, not pumping blood to the rest of the body.
ventricular tachycardia A regular, fast rhythm characterized by large, irregular, wide QRS complexes on the EKG.
 



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