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Surgeon-performed ultrasonography.

Tobias Todsen1

  • 1tobiastodsen@gmail.com.

Danish Medical Journal
|November 9, 2017
PubMed
Summary
This summary is machine-generated.

This study validates the Objective Structured Assessment of Ultrasound Skills (OSAUS) scale for assessing surgeon proficiency in abdominal and head & neck ultrasonography (US). Findings support its use in competency-based training and certification for improved patient care.

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Area of Science:

  • Medical Education
  • Surgical Skills Assessment
  • Diagnostic Imaging

Background:

  • Surgeons increasingly use ultrasonography (US), a user-dependent skill requiring validated assessment methods.
  • Current assessment of surgeon-performed US competence lacks robust validity evidence.
  • The Objective Structured Assessment of Ultrasound Skills (OSAUS) scale is proposed for evaluating US proficiency.

Purpose of the Study:

  • To explore validity evidence for the OSAUS scale in assessing competence in abdominal and head & neck ultrasonography.
  • To examine five sources of validity evidence (content, response processes, internal structure, relations to other variables, consequences) using Messick's framework.
  • To support the implementation of competency-based training in surgeon-performed US.

Main Methods:

  • Examined validity evidence for the OSAUS scale in experimental and randomized controlled settings.
  • Assessed abdominal and head & neck point-of-care US competence using the OSAUS scale.
  • Analyzed internal structure, relations to diagnostic accuracy and experience, and transfer of learning from training.

Main Results:

  • Provided validity evidence for the OSAUS scale's internal structure and relations to diagnostic accuracy in abdominal US.
  • Demonstrated significant score differences based on US experience levels and a strong correlation with diagnostic accuracy.
  • Showed that formal US training improves performance and diagnostic accuracy, but additional training is needed for full competence.

Conclusions:

  • The OSAUS scale is a valid tool for evaluating surgeon-performed US skills in abdominal and head & neck imaging.
  • Recommended for formative in-training assessment and high-stakes summative decisions, including certification for independent practice.
  • Formal hands-on courses are essential for initial US training, facilitating skill transfer and supporting competency-based education.