[Effects of general anesthesia in elderly patients memory and cognition.].

Background And Objectives: General anesthesia and mental function have been subject to studies and considerations, especially for the feeling that, especially in the elderly, it could induce changes in cognition and memory. This study aimed at evaluating the effects of general anesthesia in cognition and memory of elderly patients, correlating them to gender, age and anesthesia duration.

Methods: This is a cohort, controlled study with patients divided in two observation groups: a - anesthetic; b - clinical (control).