• Amanda H Salanitro, Chandra Y Osborn, Jeffrey L Schnipper, Christianne L Roumie, Stephanie Labonville, Daniel C Johnson, Erin Neal, Courtney Cawthon, Alexandra Businger, Anuj K Dalal, and Sunil Kripalani.
• Department of Veterans Affairs, Tennessee Valley Healthcare System Geriatric Research Education and Clinical Center (GRECC), Nashville, TN, USA. Amanda.Salanitro@Vanderbilt.Edu
• J Gen Intern Med. 2012 Aug 1; 27 (8): 924932924-32.

BackgroundLittle research has examined the incidence, clinical relevance, and predictors of medication reconciliation errors at hospital admission and discharge.ObjectiveTo identify patient- and medication-related factors that contribute to pre-admission medication list (PAML) errors and admission order errors, and to test whether such errors persist in the discharge medication list.Design, ParticipantsWe conducted a cross-sectional analysis of 423 adults with acute coronary syndromes or acute decompensated heart failure admitted to two academic hospitals who received pharmacist-assisted medication reconciliation during the Pharmacist Intervention for Low Literacy in Cardiovascular Disease (PILL-CVD) Study.Main MeasuresPharmacists assessed the number of total and clinically relevant errors in the PAML and admission and discharge medication orders. We used negative binomial regression and report incidence rate ratios (IRR) of predictors of reconciliation errors.Key ResultsOn admission, 174 of 413 patients (42%) had ≥1 PAML error, and 73 (18%) had ≥1 clinically relevant PAML error. At discharge, 158 of 405 patients (39%) had ≥1 discharge medication error, and 126 (31%) had ≥1 clinically relevant discharge medication error. Clinically relevant PAML errors were associated with older age (IRR = 1.46; 95% CI, 1.00- 2.12) and number of pre-admission medications (IRR = 1.17; 95% CI, 1.10-1.25), and were less likely when a recent medication list was present in the electronic medical record (EMR) (IRR = 0.54; 95% CI, 0.30-0.96). Clinically relevant admission order errors were also associated with older age and number of pre-admission medications. Clinically relevant discharge medication errors were more likely for every PAML error (IRR = 1.31; 95% CI, 1.19-1.45) and number of medications changed prior to discharge (IRR = 1.06; 95% CI, 1.01-1.11).ConclusionsMedication reconciliation errors are common at hospital admission and discharge. Errors in preadmission medication histories are associated with older age and number of medications and lead to more discharge reconciliation errors. A recent medication list in the EMR is protective against medication reconciliation errors.

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