Impact of a dementia-friendly program on detection and management of patients with cognitive impairment and delirium in acute-care hospital units: a non-equivalent control group design

Abstract

Background Frail older persons with cognitive impairment (CI) are at special risk of experiencing delirium during acute hospitalisation. The purpose of this study was to investigate whether a dementia-friendly hospital program contributes to improved detection and management of patients with CI and risk of delirium at an acute-care hospital in Norway. Furthermore, we aimed to explore whether the program affected the prevalence of delirium, pharmacological treatment, 30-day re-hospitalisation, 30-day mortality and institutionalisation afterwards. Methods This study had a non-equivalent control group design and a historical control group. It was conducted at two different medical wards at a large acute-care hospital in Norway from September 2018 to December 2019. A total of 423 acute hospitalised patients 75 years of age or older were included in the study. Delirium screening and cognitive tests were recorded by research staff with the Four Assessment Test (4AT) and the Confusion Assessment Measure (CAM), while demographic and medical information was recorded from patient journals. Results Implementation of the dementia-friendly hospital program did not show any significant effect on the identification of patients with CI. However, the proportion of the patients with CI who received preventive measures increased by 32.2% (P < .001), compared to the control group. The share of patients screened with 4AT within 24 hours increased from 0–35.5% (P < .001). Furthermore, the number of patients with CI who were prescribed antipsychotic/hypnotic medications was reduced by 24.5% (P < .001). There were no differences in delirium, 30-day readmission or 30-day mortality. Conclusions Implementation of a model for early screening and multifactorial nonpharmacological interventions for patients with CI and delirium using quality improvement methodology may improve management of this patient group, increase staff awareness of family involvement, and reduce prescriptions of antipsychotics, hypnotics and sedatives. Trial registration: The protocol of this study was retrospectively registered in the ClinicalTrials.gov Protocol Registration and Results System with the registration number: NCT04737733 and date of registration: 03/02/2021.