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This technique has been examined mostly in patients with coronary artery disease, but its use has been declined over the years. However, several lines of evidence, derived from hitherto clinical data in patients with healed myocardial infarction, indicate that signal\u2010averaged electrocardiography remains a valuable tool in risk stratification, especially when incorporated into algorithms encompassing invasive and noninvasive indices. Such an approach can aid the more precise identification of candidates for device therapy, in the context of primary prevention of sudden cardiac death. This article reappraises the value of signal\u2010averaged electrocardiography as a predictor of arrhythmic outcome in patients with ischemic heart disease and discusses potential future indications.<\/jats:p>","DOI":"10.1002\/joa3.12062","type":"journal-article","created":{"date-parts":[[2018,5,29]],"date-time":"2018-05-29T04:29:05Z","timestamp":1527568145000},"page":"222-229","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":59,"title":["Signal\u2010averaged electrocardiography: Past, present, and future"],"prefix":"10.1002","volume":"34","author":[{"given":"Konstantinos A.","family":"Gatzoulis","sequence":"first","affiliation":[{"name":"Electrophysiology Laboratory and First University Department of Cardiology Hippokration General Hospital National and Kapodestrian University of Athens Athens 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