title: ST-segment depression on the initial electrocardiogram in acute myocardial infarction-prognostic significance and its effect on short-term mortality: A report from the National Registry of Myocardial Infarction (NRMI-2, 3, 4).
abstract: This study analyzed 255,256 patients who had acute myocardial infarction and were enrolled in the National Registry of Myocardial Infarction 2, 3, and 4 (1994 to 2002). The objective was to determine in-hospital mortality rate among patients who had ST-segment depression on the initial electrocardiogram. Patients who had ST-segment depression had an in-hospital mortality rate (15.8%) similar to that of patients who had ST-segment elevation or left bundle branch block (15.5%). After adjusting for observed differences, ST-segment depression was associated with only a slightly lower odds ratio (0.91) of mortality compared with ST-segment elevation or left bundle branch block.
authors.affiliation: Department of Internal Medicine, Wayne State University, Detroit, Michigan, USA.
authors.forename: Sridevi R
authors.initials: SR
authors.lastname: Pitta
authors.forename: Mary
authors.initials: M
authors.lastname: Grzybowski
authors.forename: Robert D
authors.initials: RD
authors.lastname: Welch
authors.forename: Paul D
authors.initials: PD
authors.lastname: Frederick
authors.forename: Robert
authors.initials: R
authors.lastname: Wahl
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Zalenski
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D004562:Electrocardiography; D005260:Female; D017052:Hospital Mortality; D006801:Humans; D008297:Male; D009203:Myocardial Infarction / Q000175:diagnosis* / Q000401:mortality; D011379:Prognosis; D012042:Registries; D014481:United States