• William M Tierney, J Marc Overhage, Michael D Murray, Lisa E Harris, Xiao-Hua Zhou, George J Eckert, Faye E Smith, Nancy Nienaber, Clement J McDonald, and Fredric D Wolinsky.
• Regenstrief Institute for Health Care, Indiana University School of Medicine, Indianapolis, Indiana, USA. wtierney@iupui.edu
• J Gen Intern Med. 2003 Dec 1; 18 (12): 967976967-76.

BackgroundElectronic information systems have been proposed as one means to reduce medical errors of commission (doing the wrong thing) and omission (not providing indicated care).ObjectiveTo assess the effects of computer-based cardiac care suggestions.DesignA randomized, controlled trial targeting primary care physicians and pharmacists.SubjectsA total of 706 outpatients with heart failure and/or ischemic heart disease.InterventionsEvidence-based cardiac care suggestions, approved by a panel of local cardiologists and general internists, were displayed to physicians and pharmacists as they cared for enrolled patients.MeasurementsAdherence with the care suggestions, generic and condition-specific quality of life, acute exacerbations of their cardiac disease, medication compliance, health care costs, satisfaction with care, and physicians' attitudes toward guidelines.ResultsSubjects were followed for 1 year during which they made 3,419 primary care visits and were eligible for 2,609 separate cardiac care suggestions. The intervention had no effect on physicians' adherence to the care suggestions (23% for intervention patients vs 22% for controls). There were no intervention-control differences in quality of life, medication compliance, health care utilization, costs, or satisfaction with care. Physicians viewed guidelines as providing helpful information but constraining their practice and not helpful in making decisions for individual patients.ConclusionsCare suggestions generated by a sophisticated electronic medical record system failed to improve adherence to accepted practice guidelines or outcomes for patients with heart disease. Future studies must weigh the benefits and costs of different (and perhaps more Draconian) methods of affecting clinician behavior.

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