Objectives
To determine the prevalence and factors associated with use of potentially inappropriate medications (PIMs) in elderly surgical patients.
Design
Retrospective cohort study.
Setting
379 acute care hospitals participating in the nationally representative Perspective database (2006-2008).
Participants
Individuals age 65 and older undergoing major inpatient gastrointestinal, gynecologic, urologic, and orthopedic surgery (n=272,351).
Measurements
Medications were classified as PIMs using previously published criteria. Information about patient and provider characteristics and administration of PIMs was obtained from hospital discharge file data. We used logistic regression techniques to examine factors associated with use of PIMsin the perioperative period.
Results
272,351 patients aged 65 or older underwent one of our target surgical procedures, and one quarter of patients received at least one PIM during their surgical admission. Meperidine was the most frequently prescribed PIM (37,855, 14% of patients). In adjusted analysis, PIM use was less likely as age advanced (adjusted OR 0.98 per year of age, 95%CI 0.97-0.98) and among men (adjusted OR 0.83, 95%CI 0.81-0.85). PIMs were most likely to be prescribed to patients cared for by an orthopedic surgeon (adjusted OR 1.22, 95%CI 1.08-1.40 v. general surgeons). Compared to patients undergoing surgery in the Northeast, patients in the West and South were more likely to receive a PIM (adjusted OR 1.79, 95%CI 1.02-3.16 and adjusted OR 2.24, 95%CI 1.38-3.64, respectively).
Conclusions
Receipt of PIMs in elderly surgical patients is common and varies widely across providers, geographic regions, and by patient characteristics. Interventions aimed at reducing the use of PIMs in the perioperative period should be considered in quality improvement efforts.