EKG (ECG) or electrocardiogram is a special test that checks for problems with electric activity of the heart. It is usually done by a health professional as part of a cardiovascular assessment, and also as part of a regular physical examination.

During the test patients lie on a bed or table. Electrodes (small metal disks) are attached to areas on the legs, arms, and chest. An EKG machine will measure and graph the electrical impulses while the patient lies still. The test takes no more than 15 minutes to complete. After the test your doctor reviews the results and discusses them with you. The test is safe and painless.