Correlation of Preoperative Olfactory Identification Function With Preoperative Frailty and With Postoperative Complications and Mortality Following Elective Surgery

The aim of this research project is to evaluate whether olfactory identification impairment is a reliable predictor of preoperative frailty and of postoperative complications and mortality in a population of older patients scheduled for elective surgery. 1. The investigators will measure preoperative olfactory identification function and evaluate whether olfactory impairment predicts frailty, using the Edmonton Frail Scale and handgrip strength. 2. The investigators will analyze whether preoperative olfactory impairment predicts postoperative complications and mortality.