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American heart journal · Jun 2010
Comparative StudyEarly ST-segment recovery after primary percutaneous coronary intervention accurately predicts long-term prognosis after acute myocardial infarction.
- Niels J Verouden, Joost D E Haeck, Wichert J Kuijt, Karel T Koch, José P S Henriques, Jan Baan, Marije M Vis, Jan J Piek, Jan G P Tijssen, and Robbert J de Winter.
- Department of Cardiology of Academic Medical Center-University of Amsterdam, Amsterdam, The Netherlands.
- Am. Heart J. 2010 Jun 1; 159 (6): 1005-11.
BackgroundSeveral ancillary studies reported on the prognostic value of ST-segment recovery (STR) with measurement at 30 to 240 minutes after primary percutaneous coronary intervention (PCI). We determined the long-term prognostic value of early STR, assessed at the end of primary PCI, in unselected patients after ST-segment elevation myocardial infarction (STEMI).MethodsWe analyzed 12-lead electrocardiograms, recorded in the catheterization laboratory before arterial puncture and at the time of the end of PCI, from 2,124 STEMI patients who underwent primary PCI at our institution between 2000 and 2007. ST-segment recovery was categorized as complete (> or =70%), partial (30%-70%), or absent (<30%). Median follow-up was 4.1 years.ResultsThe estimated 5-year mortality was 8.3% in patients with complete STR, 14.4% in patients with partial STR, and 22.8% in patients with absent STR (P < .001). Multivariable-adjusted hazard ratios for 1-year death of patients with partial and absent STR, as compared with patients with complete STR, were 2.1 (95% CI 1.2-3.8, P = .014) and 3.2 (95% CI 1.8-5.8, P < .001), respectively. In a landmark analysis restricted to 1-year survivors, early STR was significantly predictive of 5-year mortality, even after multivariable adjustment.ConclusionsEarly STR assessment has strong, long-term prognostic properties in all-comer STEMI patients. Moreover, the prognostic power of early STR is not restricted to the early recovery phase after STEMI, but identifies high-risk subgroups among 1-year survivors.Copyright 2010 Mosby, Inc. All rights reserved.
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