FRAILTY ASSESSMENT TO HELP PREDICT PATIENTS AT RISK OF ED-INDUCED DELIRIUM

account alterations of vigilance and behavior (hypoactive, hyperactive, mixed), and confirmed by clinical judgment. Starting from 539 consecutively admitted patients, 424 were enrolled. Of them, 156 (36.8%) developed delirium. The prevalence of motor subtypes was 6.8% for hypoactive, 17.0% for hyperactive, and 13.2% for mixed subtype. Oneyear mortality was 15.5% in patients who did not experience delirium, and 41.4%, 20.3%, and 38.2% in the hypoactive, hyperactive, and mixed delirium subgroups, respectively. After adjusting for potential confounders in a Cox regression analysis, mortality was significantly higher among subjects experiencing the hypoactive subtype (Hazard Ratio 2.78, 95% Confidence Interval: 1.15–6.71). In-hospital hypoactive delirium is significantly associated with higher one-year mortality in patients undergoing hip fracture surgery.