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Revista médica de Chile

versão impressa ISSN 0034-9887

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OJEDA, Dagoberto et al. Postoperative survival among nonagenarians: A retrospective study. Rev. méd. Chile [online]. 2013, vol.141, n.1, pp.34-40. ISSN 0034-9887.  http://dx.doi.org/10.4067/S0034-98872013000100005.

Background: As the Chilean population ages, anesthesiologists are regularly faced with elderly and even nonagenarian people undergoing surgical procedures. Aim: To determine the postoperative survival time in nonagenarians and its risk factors at a private clinic. Material and Methods: Review of medical records of the clinic, searching for patients aged 90 years or older, which were subjected to a surgical procedure between 2001 and 2012. Certification ofsurvival or death was obtainedfrom the clinical records or death certification at the National Identification Service. Survival analysis was made using Kaplan-Meier and Gompertz regression. Results: The medical records of167 patients, aged 90 to 101 years (64% women), were reviewed. Sixty four percent had an underlying cardiovascular disease; in 37%, cognitive impairment. Hip fracture surgery was the most common procedure. One intraoperative death occurred. Five percent ofpatients died one month after surgery. The median survival time was two years and the longest, seven years. According to Gompertz probability regression, the predictors of death were the presence of cardiac disease (Hazard ratio (HR): 1.91, 95% confidence intervals (95% CI): 1.16; 3.16), cognitive impairment (HR: 2.10,95% CI: 1.32; 3,22), cancer (HR:2.10,95% CI: 1.32; 3.22), requirement of transfusion (HR: 1.79, 95% CI: 1.13; 2.83) and an American Society of Anesthesiologists (ASA) Class III classification (HR: 1.95, IC95%: 1.21; 3.15). Conclusions: In nonagenarian patients undergoing surgery; 50% mortality was observed 2 years after surgery. The presence of cardiac disease, cognitive impairment, cancer, transfusion and a Class IIIASA classification were predictors of death.

Palavras-chave : Aged, 80 an over; Prognosis; Surger.

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