Coronary Artery Disease

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Coronary Artery Disease:
doi: 10.1097/MCA.0000000000000101
Original Research

Can the T-peak to T-end interval be a predictor of mortality in patients with ST-elevation myocardial infarction?

Tatlisu, Mustafa A.; Özcan, Kazim S.; Güngör, Bariş; Ekmekçi, Ahmet; Çekirdekçi, Elif İ.; Aruğarslan, Emre; Çinar, Tufan; Zengin, Ahmet; Karaca, Mehmet; Eren, Mehmet; Erdinler, İzzet

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Background: The interval between the peak and the end of the T wave (Tp–e interval) on 12-lead ECG is a measure of transmural dispersion of repolarization and may be related to malignant ventricular arrhythmias. The objective of this study was to investigate whether the Tp–e interval predicts in-hospital and long-term mortality in patients with ST-segment elevation myocardial infarction (STEMI) undergoing a primary percutaneous coronary intervention (pPCI).

Methods: This study included 488 consecutive patients with STEMI treated with pPCI. Electrocardiograms were obtained after pPCI and the Tp–e interval was measured in leads without ST-segment elevation.

Results: There were 46 (9.4%) deaths in the population, with a mean follow-up time of 21.1±10.2 months. The Tp–e interval was associated with not only in-hospital ventricular tachycardia/fibrillation, target vessel revascularization, and death but also long-term target vessel revascularization and death. Furthermore, the Tp–e interval measured using the tail method was found to be a significant predictor of long-term mortality in multivariable Cox analyses [odds ratio 1.018, 95% confidence interval (1.004–1.033)]. Findings were similar in the Tp–e interval and the heart rate-corrected Tp–e interval (cTp–e).

Conclusion: Tp–e and cTp–e measured using the tail method were found to be predictors of both in-hospital and long-term mortality.

© 2014 Wolters Kluwer Health | Lippincott Williams & Wilkins


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