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Related Experiment Videos

Computer-based drug ordering: evaluation of interaction with a decision-support system.

Jan Horsky1, David R Kaufman, Vimla L Patel

  • 1Laboratory of Decision Making and Cognition, Department of Biomedical Informatics, Columbia University, New York, NY 10032-3720, USA.

Studies in Health Technology and Informatics
|September 14, 2004
PubMed
Summary

Provider order entry (POE) systems with decision support for drug dosing can be improved. Enhancing alert presentation in POE systems can reduce user errors and cognitive load during medication ordering.

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Area of Science:

  • Health Informatics
  • Human-Computer Interaction
  • Clinical Decision Support

Background:

  • Provider order entry (POE) systems often include decision support for drug dosing.
  • The effectiveness of automated alerts relies on timing and information presentation.

Purpose of the Study:

  • To evaluate the effectiveness and identify errors in a POE system's active decision support for heparin dosing.
  • To characterize user interaction with POE decision support for medication management.

Main Methods:

  • Cognitive walk-through by two researchers.
  • Experimental task completion by seven clinicians using a clinical scenario.
  • Analysis of user behavior, efficiency, and errors.

Main Results:

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  • Users lacking system knowledge exhibited inefficient behavior, leading to delays and errors.
  • Physicians often used automated dose computation as a reference rather than fully integrating it.
  • Alerts lacked perceptual salience, requiring significant interpretation.

Conclusions:

  • Improving the visual presentation of decision support alerts can enhance POE system usability.
  • Optimized alert design can lead to faster, less cognitively demanding interactions and fewer errors in medication ordering.