Appropriateness of antibiotic therapy in long-term care facilities.

The objective of this study was to examine the appropriateness of antibiotic therapy in nursing homes. Information was abstracted from infection control reports and patients' charts for a three-month period at two nursing homes in Portland, Oregon. A panel of two board-certified infectious disease specialists and one hospital pharmacist reviewed the information and rated the appropriateness of each prescription using a previously developed scale. Among the 120 infections, treatment was rated as appropriate in 49 percent, as inappropriate in 42 percent, and as unjustified in 9 percent. Cephalosporins received the lowest percent of appropriate ratings (27 percent). The primary reason for an inappropriate rating was that a more effective drug was recommended for empiric therapy of gram-negative bacillary infections. These bacteria are often resistant to oral antibiotics. There were no significant differences in appropriateness by type of organism, infection site, or clinical outcome. Physician education and the development of systems and guidelines for optimal management in this population are appropriate actions for the future.