What Is An Electrocardiogram?
An electrocardiogram (e-lek-tro-KAR-de-o-gram), also called an EKG or ECG, is a simple, painless test that records the heart’s electrical activity. To understand this test, it helps to understand how the heart works.
An EKG/ECG shows:
Doctors use EKG/ECGs to detect and study many heart problems, such as heart attacks, arrhythmias, and heart failure. The tests results also can suggest other disorders that affect heart function.