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Laparoscopic virtual reality training: are 30 repetitions enough?
William C Brunner1, James R Korndorffer, Rafael Sierra
1Tulane Center for Minimally Invasive Surgery, Tulane University Health Sciences Center, New Orleans, Louisiana, USA.
The Journal of Surgical Research
|November 24, 2004
Summary
Novice laparoscopic virtual reality training shows performance plateaus that may not reliably indicate skill mastery. Extended practice beyond initial plateaus is crucial for achieving maximal benefit in surgical simulation training.
Area of Science:
- Medical Education
- Surgical Simulation
- Virtual Reality Training
Background:
- Current literature indicates novices plateau in MIST VR laparoscopic virtual reality training within 2-7 trials.
- This suggests potential for further skill enhancement with extended training sessions.
Purpose of the Study:
- To investigate the learning curve and identify performance plateaus in novice laparoscopic virtual reality training.
- To determine if current training endpoints reliably reflect maximal skill acquisition.
Main Methods:
- 12 medical students underwent MIST VR training, completing 30 repetitions of 12 tasks.
- Performance data were collected, and learning curves were generated using spline fitting.
- Plateaus were assessed via repeated measures, slope analysis, and best score achievement.
Main Results:
- Subjects trained for an average of 7.1 hours, with plateaus identified between repetitions 2-7.
- Ultimate plateaus were reached later, between 21-29 repetitions for most tasks.
- Peak performance was achieved between 20-30 repetitions, often beyond initial plateaus.
Conclusions:
- Novice laparoscopic virtual reality training exhibits a lengthy learning curve extending beyond 30 repetitions.
- Performance plateaus are unreliable indicators for determining optimal training duration.
- Variable and extended training is necessary for maximal skill acquisition, necessitating performance-based endpoint standards.