Acute care of severely frail elderly patients in a CGA-unit is associated with less functional decline than conventional acute care

Abstract

Background: A high percentage of individuals treated in specialized acute care wards are frail and elderly. Our aim was to study whether the acute care of such patients in a comprehensive geriatric assessment (CGA) unit is superior to care in a conventional acute medical care unit when it comes to activities of daily living (ADLs), frailty, and use of municipal help services. Patients and methods: A clinical, prospective, controlled trial with two parallel groups was conducted in a large county hospital in West Sweden and included 408 frail elderly patients, age 75 or older (mean age 85.7 years; 56% female). Patients were assigned to the intervention group (n=206) or control group (n=202). Primary outcome was decline in functional activity ADLs assessed by the ADL Staircase 3 months after discharge from hospital. Secondary outcomes were degree of frailty and use of municipal help services. Results: After adjustment by regression analyses, treatment in a CGA unit was independently associated with lower risk of decline in ADLs [odds ratio (OR) 0.093; 95% confidence interval (CI) 0.052–0.164; P<0.0001], and with a less prevalent increase in the degree of frailty (OR 0.229; 95% CI 0.131–0.400; P<0.0001). When ADLs were classified into three strata (independence, instrumental ADL-dependence, and personal ADL-dependence), changes to a more dependence-associated stratum were less prevalent in the intervention group (OR 0.194; 95% CI 0.085–0.444; P=0.0001). There was no significant difference between the groups in increased use of municipal help services (OR 0.682; 95% CI 0.395–1.178; P=0.170). Conclusion: Acute care of frail elderly patients in a CGA unit was independently associated with lesser loss of functional ability and lesser increase in frailty after 3 months.