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False: A medical assistant does not need to wear gloves when taking an ECG.
To create an electrocardiogram (ECG or EKG), a recording of the electrical activity of the heart, a procedure known as electrocardiography is used. It is a heart electrogram, which is a voltage versus time graph of the electrical activity of the heart created using electrodes applied to the skin. When the cardiac muscle depolarizes and then repolarizes throughout each cardiac cycle, these electrodes are able to detect the minute electrical changes that result from these events (heartbeat). Numerous cardiac abnormalities, such as poor coronary artery blood flow (such as myocardial ischemia and myocardial infarction), electrolyte disturbances, and cardiac rhythm disturbances (such as atrial fibrillation and ventricular tachycardia), cause changes in the normal ECG pattern (such as hypokalemia and hyperkalemia).
A 12-lead ECG performed while lying down is what is typically meant by "ECG" in medical terminology, as will be covered below.
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