RESUMO
BACKGROUND: Medication errors are considered to be a significant cause of morbidity and mortality. For each patient, emergency departments (EDs) are expected to compile a list of medications, reconcile them, and pass them along to the next provider. The electronic medical record provides a method to automatically capture and propagate what may be incorrect information. OBJECTIVES: The aim of this study was to compare the medication information that patients ultimately discharged from the ED provide to the ED staff vs. the medication information the patients provide at follow-up, and to classify and quantify the types of discrepancies between the two. METHODS: We conducted a retrospective descriptive study of a convenience sample of 36 patients who were discharged from the ED and who reported taking five or more medications. Discrepancies were identified by comparing information collected at the time of the index ED visit with that gleaned from follow-up contact within 7 days of discharge. RESULTS: Of the 36 charts analyzed, 286 medications were provided by patients at the time of their ED visit. Subsequent determination of actual medication use on follow-up found 120 discrepancies, for a discrepancy rate of 42.0% (95% confidence interval [CI] 36.4-47.8%). One or more discrepancies were found on 86.1% of charts (95% CI 74.8-97.4%). CONCLUSIONS: Frequent discrepancies are found in the medication information that patients provide in the ED. Requiring the ED to reconcile medication information and to pass it on to the next provider can be a source of treatment errors in the outpatient setting.
