OBJECTIVE: In this study, the hospital morbidity and mortality, in patients older than 70 years of age, submitted to coronary artery bypass grafting (CABG), and in their quality of life. MATERIAL AND METHODS: Between July 1992 and February 2000, 507 CABG were performed at the Cardiovascular Surgery Department of the "Instituto de Moléstias Cardiovasculares de Cascavel", being 70 patients older than 70 years of age. Fifty seven percent of the patients were male, and the mean age was 72.9 years (70-85 years). Twenty six patients had, pre-operatively, systemic arterial hypertension, 25 severe chronic obstructive pulmonary disease, 17 diabetes mellitus and eight chronic renal insufficiency; thirty seven patients presented with pre-operative myocardial acute infarction, seven had been submitted to a percutaneous transluminal coronary angioplasty, seven had left main coronary disease and one had previous CABG. The mean number of grafts/ patient was 2.8, being in 53% arterial conduits. In seven patients an endarterectomy was performed, in another seven a left ventricular aneurismectomy and in one a partial left ventriculectomy. Nine cases were performed in an emergency way. Intraaortic balloon pump was used in four cases. RESULTS: The mean intensive care and hospital stay was 4 (1-24) and 12.2 (3-34) days, respectively. The global hospital mortality was 7.1%. When analysed by subgroups, the 70 to 74 years of age patients' mortality was 5.3%, and that of the last 35 patients was 2.8%. During the postoperative period the most important complications were respiratory failure (10), atrial arrhythmia (7), mental confusion (6), pulmonary infection (6), pulmonary emboli (5), low output syndrome (4), hospital acute myocardial infarction (3), stroke (3), acute renal insufficiency (4) and mediastinitis (1). In the late follow-up four (6.1%) patients died, being two cases by non-cardiac causes. CONCLUSION: In view of these results, the authors believe that CABG can be performed in patients older than 70 years of age, with a mortality almost as the same as the all group, but due to the high morbidity, we should have strict criteria and preparation, in order to lower the postoperative complications.
Coronary disease; Myocardial revascularization; Myocardial revascularization
