Signal Average EKG

A signal-averaged electrocardiogram is a more detailed type of EKG used to help your cardiologist assess the risk of an arrhythmia (abnormal heart rhythm) in patients with various types of heart disease. During this procedure, multiple ECG tracings are obtained over a period of approximately 20 minutes in order to “average” them thus eliminating signal “noise”.  The resulting high-resolution EKG can reveal “late potentials” that are a risk factor for potentially dangerous arrhythmias.