A 12-lead ECG, otherwise known as a resting ECG, or an electrocardiogram, is a painless, non-invasive procedure used to monitor the rate, rhythm, and electrical activity of your heart at rest. The test involves connecting small sensors called electrodes to your arms, legs and chest which are then connected by wires to an ECG recording machine to monitor your heart. The results will be reviewed by a cardiologist to check for any abnormalities.

Before the electrodes are attached, you will usually need to remove your upper clothing, and your chest may need to be shaved or cleaned. You may be offered a hospital gown to cover yourself.

An ECG may be requested by a heart specialist (cardiologist) or any physician who thinks you might have a problem with your heart.

You do not need to do anything special to prepare for the test. You can eat and drink as normal beforehand.