Inappropriate prescribing for older people admitted to an intermediate-care nursing home unit and hospital wards

Objective. To identify inappropriate prescribing among older patients on admission to and discharge from an intermediate-care nursing home unit and hospital wards, and to compare changes during stay within and between these groups. Design. Observational study. Setting and subjects. Altogether 400 community-dwelling people aged >= 70 years, on consecutive emergency admittance to hospital wards of internal medicine and orthopaedic surgery, were randomized to an intermediate-care nursing home unit or hospital wards; 290 (157 at the intermediate-care nursing home unit and 133 in hospital wards) were eligible for this sub-study. Main outcome measures. Prevalence on admission and discharge of potentially inappropriate medications (Norwegian general practice [NORGEP] criteria) and drug-drug interactions; changes during stay. Results. The mean (SD) age was 84.7 (6.2) years; 71% were women. From admission to discharge, the mean numbers of drugs prescribed per person increased from 6.0 (3.3) to 9.3 (3.8), p < 0.01. The prevalence of potentially inappropriate medications increased from 24% to 35%, p < 0.01; concomitant use of >= 3 psychotropic/opioid drugs and drug combinations including non-steroid anti-inflammatory drugs (NSAIDs) increased significantly. Serious drug-drug interactions were scarce both on admission and discharge (0.7%). Conclusions. Inappropriate prescribing was prevalent among older people acutely admitted to hospital, and the prevalence was not reduced during stay at an intermediate-care nursing home unit specially designed for these patients.