OBJECTIVES: To determine the predictors of bad evolution in patients submitted to myocardial revascularization (MR) in the acute myocardial infarction (AMI). MATERIAL E METHODS: Between March 1998 and November 1999, 49 patients were submitted to MR in AMI. Patients with mechanical complications of the AMI and those submitted to associated procedures to MR were excluded. The patients were divided into two groups: Group I - 29 cases without AMI related complications and Group II - 20 cases with one or more complications. The later ones included persistent ischemia (18 patients), congestive heart failure (11), cardiogenic shock (9), hypotension (7), recurrent AMI (4), sustained ventricular tachycardia (4) and ventricular fibrillation (3). Both groups were considered comparable in terms of preoperative demografics, except for older patients in Group II. In order to determine the prognostic factors for early mortality, the patients profiles and AMI complications were analysed by multivariate and variance tests. RESULTS: The overall mortality was 6.12% (3 patients), all of them in Group II. The multivariate analysis identified as predictors of hospital mortality arterial hypotension (p=0.045), cardiogenic shock (p=0.001) and ventricular fibrillation (p=0.012). CONCLUSIONS: MR in AMI is a safe procedure in patients without preoperative complications, with no deaths. The presence of preoperative complications such as cardiogenic shock, ventricular fibrillation and hypotension were considered predictors of bad evolution in this condition.
Myocardial revascularization; Myocardial infarction; Myocardial, revascularization; Myocardial revascularization
