Morbimortality in Octogenarian Patients Submitted to Myocardial Revascularization Surgery

Background: Given the progressive increase in longevity and the need of an increasingly elderly population to undergo myocardial revascularization surgery (MRS), it becomes necessary to know its risks and benefits. Objective: To evaluate the in-hospital morbimortality of patients aged 80 and older submitted to MRS and identify its predictor variables. Methods: A total of 140 consecutive cases were studied between January 2002 and December 2007. The patients’ mean age was 82.5 ± 2.2 years (range: 80-89) and 55.7 % were males. In the sample,72.9 % had arterial hypertension, 26.4 % had diabetes, 65.7 % presented severe lesion in three or more vessels and 28.6 % presented a severe lesion in the left coronary trunk. An associated surgery was present in 35.7 % of the cases, with aortic valve in 26.4 % and mitral valve in 5.6%. Results: The mortality rate was 14.3 % (isolated MRS 10.0 % vs 22.0 % with associated procedure; p = 0.091) and the morbidity was 37.9 % (isolated MRS 34.4 % vs 44.0 % with associated procedure; p = 0.35). The most frequent complications were low cardiac output (27.9%), renal dysfunction (10.0%) and prolonged ventilatory support (9.6%). At the bivariate analysis, the most important mortality predictors were sepsis (RR 10.2; 95%CI: 6.10-17.7), previous MRS (RR 8.06; 95%CI: 5.16-12.6), postoperative low cardiac output (RR 7.77; 95%CI: 3.03-19.9) and postoperative rena