Talk to the Veterans Crisis Line now
U.S. flag
An official website of the United States government

VA Health Systems Research

Go to the VA ORD website
Go to the QUERI website
Publication Briefs

Study Shows Medication Reconciliation Reduces Adverse Drug Events Related to Some Hospital Admission Prescribing Changes

Patient transfer between sites of care is a regular practice during an episode of illness, but it can be associated with lapses in care, of which medication discrepancies and adverse drug events (ADEs) are among the most common. Medication reconciliation, a process by which a provider obtains and documents a thorough medication history with specific attention to comparing current and previous medication use, has been a focus of major patient safety initiatives. This study estimated the effectiveness of inpatient medication reconciliation at the time of hospital admission on ADEs caused by admission prescribing changes. Investigators developed a CPRS (computerized patient record system) medication reconciliation tool and admission process that was implemented for 612 Veterans admitted to one academic, urban VAMC between 10/05 and 5/06. Using retrospective chart review, the main outcome measured was ADEs that were "probably" or "certainly" caused by an admission medication change.


  • Medication reconciliation at the time of hospital admission reduced ADEs caused by admission prescribing changes that were classified as errors by 43%, but it did not reduce ADEs caused by all admission prescribing changes.
  • Non-error-related ADEs would not be averted by one-time medication reconciliation on admission, but they might be averted by improved provider awareness and monitoring of admission prescribing changes during the hospital stay. The potential impact of such an intervention is large, as 50% of the ADEs in this study were caused by admission medication changes that were not errors.
  • Overall, there were 131 ADEs during 795 patient admissions: 98 (75%) were symptomatic; 6 (4.5%) caused prolonged hospital stays; and 1 (0.8%) required intensive care.

The intervention is included in medication reconciliation solutions posted on the VA National Medication Reconciliation Initiative Sharepoint website.


  • The medication reconciliation process during the first three months of implementation did not fit ideally into provider workflow, thus adherence was low.

This study was funded by HSR&D (IAB 05-204). Dr. Boockvar is part of HSR&D’s Center for Research on Health Care across Systems and Sites of Care, Bronx, NY.

PubMed Logo Boockvar K, Blum S, Kugler A, et al. Effect of Admission Medication Reconciliation on Adverse Drug Events from Admission Medication Changes. Archives of Internal Medicine May 9, 2011;171(9):860-61.

Related Briefs

» next 172 Medication Briefs...

» next 28 Patient Safety Briefs...

What are HSR Publication Briefs?

HSR requires notification by HSR-funded investigators about all articles accepted for publication. These journal articles are reviewed by HSR and publication briefs or summaries are written for a select number of articles that are then forwarded to VHA Central Office leadership to keep them informed about important findings or information. Articles to be summarized are selected by HSR based on timeliness of the findings, interest of leadership, or potential impact on the organization. Publication briefs are written for only a small number of HSR published articles. Visit the HSR citations database for a complete listing of HSR articles and presentations.

Questions about the HSR website? Email the Web Team

Any health information on this website is strictly for informational purposes and is not intended as medical advice. It should not be used to diagnose or treat any condition.