A graph of the electrical signals of the heart.
The EKG/ECG is a measurement of electrical currents in the human body.

An electrocardiogram (ECG) records the electrical signals going on in your heart. An EKG is commonly used in the medical science field as an easy and painless test to quickly determine if your heart is healthy or not.

Electrocardiograms — also called ECGs or EKGs — are often done in a doctor’s office, a clinic or a hospital room. ECG machines are part of the standard ambulances and operating room equipment. Some personal devices, such as watches, have this ability to monitor the heart’s rhythm. You should ask your doctor if this is an option for you.