Acute myocardial infarction in myocardial revascularization

Abstract

212 consecutive cases of myocardial revascularization were re-trospectively studied from January 1st, 1990 to December 31st, 1994. The prevalence of myocardial infarction in perioperative phase was 16.9 % and 5.9 % in transoperative. Chi-square Test was performed to determine the relative risk for risk factors and complications associated with perioperative myocardial infarction. The risk factors assessed are those underlined in the reviewed literature. Transoperative myocardial infarction was related to recent myocardial infarction and extracorporeal circulation time > 105 min. The risk factors and complications associated with perioperative infarction were the following: diastolic diameter of the lift ventricle > 55 mm; stenosis of circumflex artery; 3-vessel disease; aortic clamping time > 60 min; duration of extracorporeal circulation > 105 min; implantation of three or more coronary grafts; myocardial ischemia; intake of inotropic positive drugs in the transoperative phase as well as obstruction of the coronary bypasses.

Keywords

• revascularización miocar-dica/complicaciones intraoperatorias
• combinaciones posoperatorias/infarto
• factores de riesgo/infarto del miocardio/epidemiología.