THE SIGNAL-AVERAGED ELECTROCARDIOGRAM - UPDATE ON CLINICAL-APPLICATIONS

The signal-averaged electrocardiogram (SAECG) facilitates noninvasive recording of low-amplitude cardiac signals such as ventricular late po tentials, The SAECG has been used to accurately predict life-threateni ng ventricular tachyarrhythmias in patients after acute myocardial inf arction and with nonischemic dilated cardiomyopathy, and to screen for inducible ventricular tachycardia in patients with unexplained syncop e and with nonsustained ventricular tachycardia, This review focuses o n currently accepted methodology and clinical and research application s of the SAECG.