van Dongen K W, Tournoij E, van der Zee D C, Schijven M P, Broeders I A M J
Department of Surgery, University Medical Centre Utrecht, Heidelberglaan 100, P.O. Box 85500, 3508, GA, Utrecht, The Netherlands.
Surg Endosc. 2007 Aug;21(8):1413-7. doi: 10.1007/s00464-006-9188-2. Epub 2007 Feb 9.
Virtual reality simulators may be invaluable in training and assessing future endoscopic surgeons. The purpose of this study was to investigate if the results of a training session reflect the actual skill of the trainee who is being assessed and thereby establish construct validity for the LapSim virtual reality simulator (Surgical Science Ltd., Gothenburg, Sweden).
Forty-eight subjects were assigned to one of three groups: 16 novices (0 endoscopic procedures), 16 surgical residents in training (>10 but <100 endoscopic procedures), and 16 experienced endoscopic surgeons (>100 endoscopic procedures). Performance was measured by a relative scoring system that combines single parameters measured by the computer.
The higher the level of endoscopic experience of a participant, the higher the score. Experienced surgeons and surgical residents in training showed statistically significant higher scores than novices for both overall score and efficiency, speed, and precision parameters.
Our results show that performance of the various tasks on the simulator corresponds to the respective level of endoscopic experience in our research population. This study demonstrates construct validity for the LapSim virtual reality simulator. It thus measures relevant skills and can be integrated in an endoscopic training and assessment program.
虚拟现实模拟器在培训和评估未来的内镜外科医生方面可能具有极高的价值。本研究的目的是调查培训课程的结果是否反映了被评估学员的实际技能，从而确定LapSim虚拟现实模拟器（瑞典哥德堡外科科学有限公司）的结构效度。
48名受试者被分为三组之一：16名新手（0次内镜手术）、16名正在接受培训的外科住院医师（内镜手术超过10次但少于100次）和16名经验丰富的内镜外科医生（内镜手术超过100次）。通过一个相对评分系统来衡量表现，该系统结合了计算机测量的单个参数。
参与者的内镜经验水平越高，得分越高。经验丰富的外科医生和正在接受培训的外科住院医师在总体得分以及效率、速度和精准度参数方面的得分在统计学上显著高于新手。
我们的结果表明，模拟器上各项任务的表现与我们研究人群中各自的内镜经验水平相对应。本研究证明了LapSim虚拟现实模拟器的结构效度。因此，它能够测量相关技能，并可纳入内镜培训和评估计划中。
