• Vicente Bertomeu, Ángel Cequier, José L Bernal, Fernando Alfonso, Manuel P Anguita, Javier Muñiz, José A Barrabés, David García-Dorado, Javier Goicolea, and Francisco J Elola.
• Servicio de Cardiología, Hospital San Juan, Universidad Miguel Hernández, Alicante, Spain.
• Rev Esp Cardiol (Engl Ed). 2013 Dec 1;66(12):935-42.

Introduction And ObjectivesTo investigate the relationship between in-hospital mortality due to acute myocardial infarction and type of hospital, discharge service, and treatment provided.MethodsRetrospective analysis of 100 993 hospital discharges with a principal diagnosis of myocardial infarction in hospitals of the Spanish National Health Service. In-hospital mortality was adjusted for risk following the models of the Institute for Clinical Evaluative Sciences (Canada) and the Centers for Medicare & Medicaid Services (United States).ResultsHospital characteristics are relevant to explain the variation in the individual probability of dying from myocardial infarction (median odds ratio: 1.3561). The risk-adjusted in-hospital mortality in cluster 3 and especially in cluster 4 hospitals (500 beds to 1000 beds and medium-high complexity) was significantly lower than in hospitals with less than 200 beds. Cluster 5 (more than 1000 beds), which includes a diverse group of hospitals, had a higher mortality rate than clusters 3 and 4. The adjusted mortality in the groups with the best and worst outcomes was 6.74% (cluster 4) and 8.49% (cluster 1), respectively. Mortality was also lower when the cardiology unit was responsible for the discharge or when angioplasty had been performed.ConclusionsThe typology of the hospital, treatment in a cardiology unit, and percutaneous coronary intervention are significantly associated with the survival of a patient hospitalized for myocardial infarction. We recommend that the Spanish National Health Service establish health care networks that favor percutaneous coronary intervention and the participation of cardiology units in the management of patients with acute myocardial infarction.Copyright © 2013 Sociedad Española de Cardiología. Published by Elsevier Espana. All rights reserved.

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