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The Effects of Computer-assisted Electrocardiographic Interpretation on Physicians' Diagnostic Decisions

Author

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  • Steven D. Hillson
  • Donald P. Connelly
  • Yuanli Liu

Abstract

Objective. To evaluate the effect of computer-assisted interpretation of electrocardiograms (ECGs) on diagnostic decision making by primary care physicians. Design. Randomized controlled trial. Setting. Primary care physicians' outpatient clinics in or near the Minneap olis/St. Paul metropolitan area. Participants. Forty family physicians and general internists who were members of either of two large consortia of clinics. Intervention. Subjects evaluated ten clinical vignettes accompanied by ECGs and reported their diagnostic impressions. The vignettes were based on actual patient visits. Half of the subjects received ECGs with computer-generated reports, the other half received the same ECGs without reports. Main outcome measures. ECG reading time; agreement with the clinical diagnosis; agreement with the computer report; diagnostic confidence. Results. The subjects receiving the reports were more likely to agree with the clinical diagnoses of the original cases, particularly for two vignettes in which the diagnoses were uncommon and were mentioned in the reports. The subjects receiving the reports were also more likely to make diagnoses that were consistent with the reports, even when the reports were erroneous. Those receiving the reports spent, on average, 15 seconds less time looking at each ECG, a 25% decrease. Conclusions. In simulated cases, primary care physicians appear to use computer interpre tations of ECGs when available, as shown by enhanced diagnostic accuracy and modestly reduced time spent reading the tracings. However, erroneous reports may mislead physi cians. Since the effects of computerized ECG interpretation do not appear to have been uniformly favorable in this mock-clinical setting, it will be important to evaluate the effects of this technology in actual practice. Key words: computer-assisted diagnosis; computer-as sisted decision making; physician decision making; electrocardiogram. (Med Decis Making 1995;15:107-112)

Suggested Citation

  • Steven D. Hillson & Donald P. Connelly & Yuanli Liu, 1995. "The Effects of Computer-assisted Electrocardiographic Interpretation on Physicians' Diagnostic Decisions," Medical Decision Making, , vol. 15(2), pages 107-112, June.
    • Handle: RePEc:sae:medema:v:15:y:1995:i:2:p:107-112
    DOI: 10.1177/0272989X9501500202
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    Citations

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    Cited by:

    1. David J. Brailer & Eugene Kroch & Mark V. Pauly, 1997. "The impact of Computer-assisted Test Interpretation on Physician Decision Making," Medical Decision Making, , vol. 17(1), pages 80-86, February.
    2. Edward H. Shortliffe, 1995. "When Decision Support Doesn't Support," Medical Decision Making, , vol. 15(2), pages 187-188, June.
    3. William N. Southern & Julia Hope Arnsten, 2009. "The Effect of Erroneous Computer Interpretation of ECGs on Resident Decision Making," Medical Decision Making, , vol. 29(3), pages 372-376, May.

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