A signal average ECG, or "Late Potential Detector" is a microprocessor based electrocardiogram (ECG). This type of ECG provides the cardiologist with knowledge about the potential to have a life threatening heart rhythm. It gives the CCT doctor different information than a 12 lead ECG.
This is a good screening test for detecting patients prone to sustained ventricular tachycardia (a potential life threatening heartbeat). If the test does show the potential to have this rhythm, then a more aggressive cardiac evaluation is warranted. The test itself only takes about 5 minutes.
Before The Test
During The Test
After The Test