Cirugía de revascularización miocárdica: Análisis de supervivencia a corto y largo plazo

Abstract

Background. This study sets out to describe the survival and clinical evolution of patients who undergo myocardi¬al revascularisation surgery, and identifies the short- and long-term predictive factors for surgical outcomes. Methods. Study of a cohort of 175 patients undergoing pure or mixed coronary myocardial revascularisation sur¬gery at a heart surgery unit, recruited between 2008 and 2010 and monitored for ten years. Descriptive and logis¬tic regression (OR and 95%CI) analysis were carried out, along with an analysis of survival by Kaplan Meier and Cox uni- and multivariate regression (HR and 95%CI) in the short- (one year) and long-term (ten years). Results. Predominantly male cohort (85.1%), mean age of 67 years (45-84), and mean EuroSCORE of 5.3%. Mor¬tality was 6.8 and 26.9% at 1 and 10 years, respectively. Mean survival of deceased individuals was 40 months (32.2-47.8). In the short-term, a better NYHA 4% (OR: 4.94; 95%CI: 1.52¬16.10; p=0.008) showed an increased risk of presenting adverse cardiac events. In the long-term, greater age (HR: 1.06; 95%CI: 1.01-1.10; p=0.026) and lower rates of body mass index after the first postoperative year (HR: 0.90; 95%CI: 0.81-0.99; p=0.040) were independent predictors of mortality. Conclusion. Age was an independent predictor of long¬term mortality, while being female and a EuroSCORE >4% were associated with a higher risk of suffering from short¬term cardiovascular events.