Similar to the standard electrocardiogram (EKG), the signal-averaged electrocardiogram (SAEKG) is a non-invasive and painless test used to assess the electrical system of the heart. SAEKG is a more detailed type of EKG that is used to:

A SAEKG uses electrodes placed on a patient’s body to obtain signals from the heart. These signals are amplified and analyzed by a computer to help identify people with certain types of heart disease. The test can be completed on an outpatient basis in a short amount of time.  Patients can return to his or her daily activities immediately following the test. If an abnormal heart rhythm (arrhythmia) is suspected, then the physician may order a more invasive test called an electrophysiology study.