Your doctor may suggest you get an electrocardiogram -- also called an EKG or ECG -- to check for signs of heart disease. An electrocardiogram (ECG) is a simple test that can be used to check your heart's rhythm and electrical activity. Electrocardiograph machines · Defibrillation protection: any ECG used in healthcare may be attached to a. Electrocardiography is the process of producing an electrocardiogram. Electrocardiograms — also called ECGs or EKGs — are often done in a doctor's office, a clinic or a hospital room. The American Heart Association explains an electrocardiogram (EKG or.