An electrocardiogram (ECG) records the rhythm and electrical activity of your heart. ECG's can often be done by your GP (family doctor) if he/she suspects that you might have heart disease or you may be refered to your local hospital to have an ECG done.
You will have several small sticky patches (electrodes) placed on your arms legs and chest. These patches are connected to an 'ECG recorder' which picks up the electrical signals produced with each heart beat so that a 'heart trace' can be recorded.
An ECG can show that you have had a heart attack or problems with your heart rhythm but, other tests will be required to make certain.