IJCS | Volume 31, Nº3, May/ June 2018

DOI: 10.5935/2359-4802.20180020 258 ORIGINAL ARTICLE International Journal of Cardiovascular Sciences. 2018;31(3)258-263 Mailing Address: Rodrigo Mazzarone Gomes de Sá Praca Antonio Callado, 215/ 305. Postal Code: 22793-084, Barra da Tijuca, Rio de Janeiro, RJ - Brazil. E-mail: rmazzarone@gmail.com ; rodgomesdesa@gmail.com Epidemiological Characteristics and Mortality Predictors in Patients Over 70 Years Submitted to Coronary Artery Bypass Grafting Renato Kaufman 1 , Vitor Manuel Pereira Azevedo 2 , Rodrigo Mazzarone Gomes de Sá 1 , Mauro Geller 3 , Regina Maria de Aquino Xavier 2 , Rogério Brant Martins Chaves 2 , Marcia Bueno Castier 4 Instituto Estadual de Cardiologia Aloysio de Castro, 1 Rio de Janeiro, RJ - Brazil; Instituto Nacional de Cardiologia, 2 Rio de Janeiro, RJ - Brazil; Universidade Federal do Rio de Janeiro, 3 Rio de Janeiro, RJ - Brazil; Universidade do Estado do Rio de Janeiro, 4 Rio de Janeiro, RJ - Brazil Manuscript received May 28, 2017; revised manuscript August 25, 2017; accepted October 15, 2017. Abstract Background: Coronary artery disease is the leading cause of death worldwide, with age being an independent risk factor for mortality in patients submitted to surgical revascularization. Objective: To evaluate the mortality risk predictors in patients older than 70 years submitted to myocardial revascularization. Methods: This is a retrospective cohort study of a cardiac surgery database. Logistic regression was used to assess independent death predictors. Results: A total of 372 patients submitted to surgical revascularization from 2004 to 2012 were assessed. The main cardiovascular risk factor was hypertension, followed by diabetes mellitus. Mortality at 30 days was 19.35%. The presence of peripheral vascular disease (OR: 2,47), emergency surgery (OR: 4,86) and combined valve procedure (OR: 3,86) were independent predictors of death. Conclusion: The surgical procedure in elderly patients showed a higher mortality than in the general population. Peripheral vascular disease, emergency surgery and combined valve procedures increased the risk of death in these patients. (International Journal of Cardiovascular Sciences. 2018;31(3)258-263) Keywords: CoronaryArteryDisease / surgery; Myocardial Revascularization; Hypertension; DiabetesMellitus; Aged. Introduction Cardiovascular disease is currently one of the main causes of hospitalization in Brazil in the general population, being the main cause of hospitalization in elderly patients. 1 With the advent of new technologies for the treatment of cardiovascular disease, the survival of the patient with heart disease increases and, with aging, other comorbidities, such as hypertension, diabetes, kidney failure and cognitive dysfunction appear. 2,3 With the aging process, the cardiovascular system itself shows physiological changes, such as progressive increase in systolic blood pressure, reduction of aerobic capacity and of reflex responses of the autonomic nervous system. 4 The aging process alone increases the patient’s cardiovascular risk, either by the Framingham and SCORE risk score evaluation, which are used in asymptomatic patients, or by assessing the prevalence of coronary heart disease using the Diamond score. 5,6 In patients with coronary disease, age is an important predisposing risk factor for future events, both in acute coronary disease scores, such as GRACE, as well as in preoperative risk assessment, such as the EuroSCORE. 7,8 There are still doubts related to the predictive factors of surgical death, defined as death occurring within 30 days