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First published December 20, 2007 as JAMIA PrePrint; doi:10.1197/jamia.M2577
Journal of the American Medical Informatics Association 2008;15(2):212-216
© 2008 American Medical Informatics Association

A more recent version of this article appeared on March 1, 2008
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Submitted on August 3, 2007
Accepted on October 23, 2007

Use of a Regional Health Information Exchange to Detect Crossover of Patients with MRSA Between Urban Hospitals

Abel N. Kho MD, MS1*, Larry Lemmon2, Marie Commiskey RN3, Stephen J. Wilson MD, MPH4, and Clement J. McDonald MD5

Affiliation of the authors: 1 Northwestern University, Chicago, IL; Regenstrief Institute, Inc., Indianapolis, IN ; 2 Regenstrief Institute, Inc., Indianapolis, IN; 3 Infection Control Department, Wishard Memorial Hospital, Indianapolis, IN ; 4 Infection Control Department, Wishard Memorial Hospital, Indianapolis, IN; Indiana University School of Medicine, Indianapolis, IN ; 5 (formerly) Regenstrief Institute, Inc., Indianapolis, IN

* To whom correspondence should be addressed.

Background A significant portion of patients already known to be colonized or infected with Methicillin-Resistant Staphylococcus aureus (MRSA) may not be identified at admission by neighboring hospitals.

Methods We utilized data from a Regional Health Information Exchange to assess the frequency that patients known to have MRSA at one healthcare system are admitted to a neighboring healthcare system unaware of their MRSA status. We conducted a retrospective, registry trial from January 1999 through January 2006 involving three healthcare systems in central Indianapolis, representing six hospitals.

Results Over one year, 286 unique patients generated 587 admissions accounting for 4,335 inpatient days where the receiving hospital was not aware of the prior history of MRSA. The patients accounted for an additional 10% of MRSA admissions received by study hospitals over one year and over 3,600 inpatient days without contact isolation.

Conclusions Information exchange could improve timely identification of known MRSA patients within an urban setting.






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