Exercise cardiac treadmill: A machine used to obtain a continuous electrocardiogram (EKG, ECG) recording of the heart as a patient performs increasing levels of exercise. An exercise cardiac treadmill permits the detection of abnormal heart rhythms (arrhythmias) and provides a screening test for the presence of narrowed arteries of the heart (coronary arteries). Narrowing of these arteries can limit the supply of oxygenated blood to the heart muscle during exercise.
Quick GuideHeart Disease: Causes of a Heart Attack
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Last Editorial Review: 7/1/2016