Geron-techno-prophylaxis?: Study on the potential contribution of actigraphy in improving the quality of care and sleep care for patients in the geriatric department at CHU Liège

Purpose To determine if the actimetric measure in hospital ward could assist caregivers in the objectivation of sleep disorders and the utility of psychotropic therapeutics. Method to quantify activity and sleep through the Wellness watch Vivago® actimeter of subjects during their hospitalization. Demographic and clinical characteristics were collected at baseline. The psychotropic drugs consumption and the data assessing their sleep were followed . Data were extracting by logiciels SAS® version 9.4 and Statistica ® version 10, Mean comparisons tested by the Student t confirmed by the non parametric MannWhitney test when comparing two groups by analysis of variance (ANOVA) confirmed by the nonparametric Kruskai-Wallis if comparing more than two groups. Correlations between variables are confirmed by the Spearman's Rho. Results & Discussion 43 Subjects (14 M, 29 F) aged between 76-95 years (mean 87) were followed . We have extracted various indicators from the data and confronted these with demographic and clinical information. The female patients, undernourished, cognitively impaired, dependent and patients with high comorbidity index are significantly associated with increased risk of sleep disorders. A link has also been established between the self-reported sleep complaints and decreased night sleeping time (sleep duration (NST)=286min (complaints) vs 404min (no complaints), Mann-Whitney test, p