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Construct validity for eye-hand coordination skill on a virtual reality laparoscopic surgical simulator.

Shohei Yamaguchi1, Kozo Konishi, Takefumi Yasunaga

  • 1Department of Disaster and Emergency Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan. shohei@surg2.med.kyushu-u.ac.jp

Surgical Endoscopy
|May 5, 2007
PubMed
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Virtual reality laparoscopic surgical simulators can assess surgeon skill. Eye-hand coordination with the nondominant hand on the LAP Mentor effectively differentiates between experienced and novice surgeons, validating its use in skill assessment.

Area of Science:

  • Surgical simulation
  • Medical education technology
  • Laparoscopic surgery training

Background:

  • Assessing laparoscopic surgical skill is crucial for patient safety and training effectiveness.
  • Virtual reality simulators offer a controlled environment for skill evaluation.
  • The LAP Mentor is a virtual reality platform used for laparoscopic surgical training.

Purpose of the Study:

  • To determine if eye-hand coordination skill on the LAP Mentor can distinguish between surgeons with varying levels of laparoscopic experience.
  • To confirm the construct validity of eye-hand coordination skill assessment using the LAP Mentor.

Main Methods:

  • 31 right-handed surgeons were divided into experienced (>50 procedures) and novice (<10 procedures) groups.
  • Participants performed an eye-hand coordination task on the LAP Mentor virtual reality simulator.

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  • Performance metrics, including task completion time and instrument movements, were analyzed.

    • Main Results:

    • Experienced surgeons were significantly faster than novice surgeons.
    • Experienced surgeons demonstrated better economy of movement (EOM) and faster average speed with the left instrument.
    • No significant differences were found for the number of movements (NOM), EOM, or right instrument speed.

    Conclusions:

    • Eye-hand coordination skill, particularly with the nondominant hand, measured by the LAP Mentor differentiates surgical experience.
    • This finding provides evidence for the construct validity of the LAP Mentor's eye-hand coordination assessment.
    • The LAP Mentor is a valuable tool for evaluating laparoscopic surgical skills and experience levels.