An ECG is a machine which measures the electrical activity of your heart. The Doctor may recommend an ECG test for you, such as for chest pain, palpitations, as part of a Diabetes check etc. The test can be carried out for a range of reasons, to assess your heart health. In some cases, an ECG is performed due to symptoms such as chest pain or discomfort or irregular heartbeat. Sometimes the GP will recommend an ECG if you have a family history of heart conditions, or if you have risk factors for heart disease including high blood pressure (hypertension), raised cholesterol, diabetes, history of smoking or alcohol abuse etc. The test is carried out by the Practice Nurse or Doctor and the result is evaluated by the Doctor, and any follow-up actions will be discussed with you.