The LapSim: A learning environment for both experts and novices

Charles Y. Ro, Ioannis K. Toumpoulis, Robert C. Ashton, Tony Jebara, Caroline Schulman, George J. Todd, Joseph J. Derose, James J. McGintya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

27 Scopus citations

Abstract

Background: Simulated environments present challenges to both clinical experts and novices in laparoscopic surgery. Experts and novices may have different expectations when confronted with a novel simulated environment. The LapSim is a computer-based virtual reality laparoscopic trainer. Our aim was to analyze the performance of experienced basic laparoscopists and novices during their first exposure to the LapSim Basic Skill set and Dissection module. Methods: Experienced basic laparoscopists (n = 16) were defined as attending surgeons and chief residents who performed >30 laparoscopic cholecystectomies. Novices (n = 13) were surgical residents with minimal laparoscopic experience. None of the subjects had used a computer-based laparoscopic simulator in the past. Subjects were given one practice session on the LapSim tutorial and dissection module and were supervised throughout the testing. Instrument motion, completion time, and errors were recorded by the LapSim. A Performance Score (PS) was calculated using the sum of total errors and time to task completion. A Relative Efficiency Score (RES) was calculated using the sum of the path lengths and angular path lengths for each hand expressed as a ratio of the subject's score to the worst score achieved among the subjects. All groups were compared using the Kruskal-Wallis and Mann-Whitney U-test. Results: Novices achieved better PS and/or RES in Instrument Navigation, Suturing, and Dissection (p<0.05). There was no difference in the PS and RES between experts and novices in the remaining skills. Conclusion: Novices tended to have better performance compared to the experienced basic laparoscopists during their first exposure to the LapSim Basic Skill set and Dissection module.

Original languageEnglish (US)
Title of host publicationMedicine Meets Virtual Reality 13
Subtitle of host publicationThe Magical Next Becomes the Medical Now, MMVR 2005
PublisherIOS Press
Pages414-417
Number of pages4
ISBN (Print)1586034987, 9781586034986
StatePublished - Jan 1 2005
Externally publishedYes
Event13th Annual Conference on Medicine Meets Virtual Reality: The Magical Next Becomes the Medical Now, MMVR 2005 - Long Beach, CA, United States
Duration: Jan 26 2005Jan 29 2005

Publication series

NameStudies in Health Technology and Informatics
Volume111
ISSN (Print)0926-9630
ISSN (Electronic)1879-8365

Other

Other13th Annual Conference on Medicine Meets Virtual Reality: The Magical Next Becomes the Medical Now, MMVR 2005
CountryUnited States
CityLong Beach, CA
Period1/26/051/29/05

ASJC Scopus subject areas

  • Biomedical Engineering
  • Health Informatics
  • Health Information Management

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