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Related Experiment Videos

Endoscopic estimation of size: improved accuracy by directed teaching

E Schwartz1, M F Catalano, B Krevsky

  • 1Temple University School of Medicine, Department of Medicine, Philadelphia, PA 19140, USA.

Gastrointestinal Endoscopy
|October 1, 1995
PubMed
Summary

Endoscopic size estimation can be improved with a new teaching protocol. This method significantly reduces estimation errors, especially for endoscopists early in their training.

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Area of Science:

  • Gastroenterology
  • Medical Education

Background:

  • Endoscopic size estimation is often inaccurate.
  • Existing tools for size estimation lack clinical convenience.

Purpose of the Study:

  • To design and evaluate a clinical teaching protocol to improve endoscopists' size estimation accuracy.
  • To assess the retention of improved estimation skills over time.

Main Methods:

  • Thirteen endoscopists estimated steel ball bearing sizes in a model colon using a videoendoscope.
  • Participants were taught to compensate for optic distortion and retested immediately and 1 month later.

Main Results:

  • Mean estimation error decreased from 28% before teaching to 8% immediately after teaching (p < .05).

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  • Error increased to 12% at 1 month (p < .05), with improvement retained only by those with <1 year experience.

    • Conclusions:

    • Endoscopists can be trained to compensate for endoscopic optic distortion.
    • Early integration of this teaching into training programs is most effective.