[Study of medications use of elderly admitted to acute care hospital.]

The prevalence of diseases increases with age and so does use of medications. Thus illness related to medications use does also become more prevalent. This study aims at evaluating medications of elderly people admitted to an acute care hospital, and demonstrate adverse reactions and quality indicators.

This is a study of patients 75 years of age and older admitted acutely to internalmedicine at the Reykjavik Hospital over a three month period in the spring of 1995. All medications and diagnoses were registered and the medical records reviewed. The contribution of adverse medication effects to the admission was assessed. Quality of treatment was evaluated according to evidence based medicine for the diagnoses chosen. The study included 208 individuals, 133 women and 75 men with the mean age of 82.4 years.

Mean length of stay for women was 19.9 days and men 15.2 days. Number of drugs on admission and discharge ranged from 0 to 18. The mean number of drugs were for women 5.8 and 6.9 and men 6.6 and 7.7 on admission and discharge, respectively. In 16 cases or 7.7% it was judged that there was a high likelihood of the admission being due to an adverse effect. Potential drug interactions according to a computer software package were not judged to be of clinical importance in any case.

Treatment for coronary heart disease, heart failure, osteoporosis, insomnia and long term prednisolon treatment is not completely optimal according to evidence based medicine. The results of this study indicate that treatment could be improved for example with use of clinical guidelines.