The unique toxic and adverse effects of meperidine hydrochloride have prompted a number of expert panels convened by national health care policy organizations to recommend that meperidine not be used in older patients. We hypothesized that the prescription of meperidine was less likely to reflect these recommendations in older surgical patients than in older medical patients. The current study examined the use of meperidine in 2 urban hospitals as 1 quality indicator of the care of older adults, measuring the prevalence of its use and characteristics of the patients to whom it is administered. Design: Retrospective analysis. Setting: Two urban hospitals: a large private tertiary care teaching hospital and a smaller academically affiliated Veterans Affairs medical center.