Atropine Weight and Risk of Postoperative Confusion in the Elderly

The identification of a high atropine load of treatment received during hospitalization as a predictor of postoperative confusion could have various benefits: * Pharmacoepidemiological: identify factors associated with postoperative confusion * Clinics: by favoring treatments with a low atropine load during anesthesia, the management of patients hospitalized in orthopedics. Similarly, stopping or re-evaluating treatments with a high atropine weight for scheduled surgery is an easy step to take. * Socio-economic: by reducing the costs related to the occurrence of a confusional syndrome (over-treatment, prolonged hospital stay, loss of autonomy, institutionalization of patients...). In total, the present study would improve the daily management of hospitalized patients and the practices of clinicians, by offering a decision-making aid.