Postoperative Cognitive Dysfunction After Propofol Anesthesia for Noncardiac Surgery

Background: Postoperative cognitive dysfunction (POCD) in elderly patients after noncardiac surgery is a common problem. Therefore,this study was designed to assess POCD after closed-loop coadministration of propofol and remifentanil guided by bispectral index in comparison to intravenous anesthesia in elderly patients undergoing major noncardiac surgery. Methods: After approval of the local ethical committee was obtained, 204 patients (American Society of Anesthesiologists physical status I-III; age, \> 55 yr) undergoing surgery (duration, \> 1 h) were enrolled into this pospective randomized monocenter study. Patients received anesthesia 3 days after using a neuropsychological test battery.