Resumen

MORLANS HERNANDEZ, Karel; PEREZ LOPEZ, Horacio  y  CACERES LORIGA, Fidel Manuel. Risk factors of major adverse events in myocardial revascularization surgery. Rev Cubana Cir [online]. 2008, vol.47, n.4, pp. 0-0. ISSN 1561-2945.

INTRODUCTION. Myocardial revascularization surgery is the most common of heart surgeries.To know the prevalence of major adverse events in this surgery and their risk factors, 1264 patients that were consecutively revascularized were prospectively studied between January 1990 and January 1996 in the Cardiology Institute of Havana City. METHODS. A multivariate analysis of the risk variables was made. Bayes' probabilities were obtained. The statistical significance level was p < 0.05. RESULTS. Major events were reported in 398 cases (32.1 %). The most frequent events were surgical reintervention (234; 18.9 %) and low cardiac output (190; 15.0 %). Most of Bayes' positive probabilities for the appearance of adverse events behaved as follows: left ventricular ejection fraction < 40 % (probability: 66.2 %) and peripheral arterial vascular insufficiency (probability: 58.8 %) (preoperative); low cardiac output (probability: 82.3 %) and surgical accidents (probability: 73.1 %) (transoperative); non-sinusal rhythms (probability: 88.9 %) and use of four or more units of hemoderivatives (probability: 59.6 %) (postoperative). CONCLUSIONS. The adverse events behaved according to the ranges reported at the international level.

Palabras clave : Myocardial revascularization surgery; heart surgery; myocardial revascularization; major adverse events; risk factors.

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