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Errors in the medication process: frequency, type, and potential clinical consequences.

Marianne Lisby1, Lars Peter Nielsen, Jan Mainz

  • 1Aarhus University Hospital, Department of Quality improvement and Patient Safety, Aarhus, Denmark. lisby@akh.aaa.dk

International Journal for Quality in Health Care : Journal of the International Society for Quality in Health Care
|January 26, 2005
PubMed
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Medication errors are frequent, with 43% of opportunities resulting in mistakes. Improving processes and using technology can significantly reduce these errors and enhance patient safety.

Area of Science:

  • Pharmacy and Therapeutics
  • Patient Safety
  • Healthcare Quality Improvement

Background:

  • Medication errors pose a significant risk to patient safety.
  • Understanding the frequency and types of errors across the entire medication process is crucial for effective intervention.

Purpose of the Study:

  • To determine the incidence, nature, and potential clinical impact of medication errors.
  • To analyze errors across all stages of medication management, including ordering, transcription, dispensing, administration, and discharge summaries.

Main Methods:

  • A cross-sectional study conducted at Aarhus University Hospital, Denmark.
  • Employed direct observation, unannounced control visits, and chart reviews to identify medication errors.
  • Physicians and pharmacists evaluated the potential consequences of errors, excluding those in discharge summaries.

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Main Results:

  • A high overall error rate of 43% (1065 errors in 2467 opportunities) was observed.
  • Discharge summaries had the highest error frequency (76%), followed by transcription (56%) and administration (41%).
  • Potential adverse drug events were estimated to be 20-30% of all evaluated medication errors.

Conclusions:

  • Nearly 50% of medication errors stemmed from omitted actions, highlighting a need for quality improvement.
  • Implementing procedural changes and automated technologies could substantially decrease medication errors.
  • Addressing errors in discharge summaries is critical for comprehensive patient safety improvements.