JEC 2046, Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, 110, 8th Street, Troy, NY 12180, USA.
Surg Endosc. 2011 Apr;25(4):1012-8. doi: 10.1007/s00464-010-1306-5. Epub 2010 Aug 24.
Morbid obesity accounts for more than 90,000 deaths per year in the United States. Laparoscopic adjustable gastric banding (LAGB) is the second most common weight loss procedure performed in the US and the most common in Europe and Australia. Simulation in surgical training is a rapidly advancing field that has been adopted by many to prepare surgeons for surgical techniques and procedures. The aim of our study was to determine face, construct, and content validity for a novel virtual reality laparoscopic adjustable gastric band simulator.
Twenty-eight subjects were categorized into two groups (expert and novice), determined by their skill level in laparoscopic surgery. Experts consisted of subjects who had at least 4 years of laparoscopic training and operative experience. Novices consisted of subjects with medical training but with less than 4 years of laparoscopic training. The subjects used the virtual reality laparoscopic adjustable band surgery simulator. They were automatically scored according to various tasks. The subjects then completed a questionnaire to evaluate face and content validity.
On a 5-point Likert scale (1 = lowest score, 5 = highest score), the mean score for visual realism was 4.00 ± 0.67 and the mean score for realism of the interface and tool movements was 4.07 ± 0.77 (face validity). There were significant differences in the performances of the two subject groups (expert and novice) based on total scores (p < 0.001) (construct validity). Mean score for utility of the simulator, as addressed by the expert group, was 4.50 ± 0.71 (content validity).
We created a virtual reality laparoscopic adjustable gastric band simulator. Our initial results demonstrate excellent face, construct, and content validity findings. To our knowledge, this is the first virtual reality simulator with haptic feedback for training residents and surgeons in the laparoscopic adjustable gastric banding procedure.
在美国，病态肥胖每年导致超过 90000 人死亡。腹腔镜可调节胃束带术（LAGB）是美国第二常见的减肥手术，也是欧洲和澳大利亚最常见的手术。手术模拟是一个快速发展的领域，许多人已经采用该领域来为外科医生准备手术技术和程序。我们的研究旨在确定一种新型虚拟现实腹腔镜可调节胃束带模拟器的表面、结构和内容效度。
28 名受试者分为两组（专家和新手），根据他们的腹腔镜手术技能水平确定。专家组由至少有 4 年腹腔镜培训和手术经验的受试者组成。新手组由具有医学培训但少于 4 年腹腔镜培训经验的受试者组成。受试者使用虚拟现实腹腔镜可调节带手术模拟器。他们根据各种任务被自动评分。然后，受试者完成一份问卷，以评估表面和内容效度。
在 5 分李克特量表（1 =最低得分，5 =最高得分）上，视觉逼真度的平均得分为 4.00 ± 0.67，界面和工具运动逼真度的平均得分为 4.07 ± 0.77（表面效度）。根据总分，两组受试者（专家和新手）的表现存在显著差异（p < 0.001）（结构效度）。专家组对模拟器的实用性的平均得分为 4.50 ± 0.71（内容效度）。
我们创建了一个虚拟现实腹腔镜可调节胃束带模拟器。我们的初步结果表明，该模拟器具有极好的表面、结构和内容效度。据我们所知，这是第一个具有触觉反馈的虚拟现实模拟器，用于培训腹腔镜可调节胃束带手术的住院医师和外科医生。
