Exeter Surgical Health Services Research Unit, Royal Devon & Exeter NHS Foundation Trust, Barrack Road, Exeter, Devon EX2 5DW, UK.
Int J Surg. 2012;10(3):163-6. doi: 10.1016/j.ijsu.2012.02.012. Epub 2012 Feb 23.
To assess face validity, construct validity and the training benefits of a virtual reality TURP simulator.
11 novices (no TURP experience) and 7 experts (>200 TURP's) completed a virtual reality median lobe prostate resection task on the TURPsim™ (Simbionix USA Corp., Cleveland, OH). Performance indicators (percentage of prostate resected (PR), percentage of capsular resection (CR) and time diathermy loop active without tissue contact (TAWC) were recorded via the TURPsim™ and compared between novices and experts to assess construct validity. Verbal comments provided by experts following task completion were used to assess face validity. Repeated attempts of the task by the novices were analysed to assess the training benefits of the TURPsim™.
Experts resected a significantly greater percentage of prostate per minute (p < 0.01) and had significantly less active diathermy time without tissue contact (p < 0.01) than novices. After practice, novices were able to perform the simulation more effectively, with significant improvement in all measured parameters. Improvement in performance was noted in novices following repetitive training, as evidenced by improved TAWC scores that were not significantly different from the expert group (p = 0.18).
This study has established face and construct validity for the TURPsim™. The potential benefit in using this tool to train novices has also been demonstrated.
评估虚拟现实 TURP 模拟器的表面效度、结构效度和培训效益。
11 名新手（无 TURP 经验）和 7 名专家（>200 例 TURP）在 TURPsim™（Simbionix USA Corp.，克利夫兰，俄亥俄州）上完成了虚拟现实中叶前列腺切除术任务。通过 TURPsim™ 记录了性能指标（切除的前列腺百分比（PR）、切除的包膜百分比（CR）和无组织接触时热凝时间（TAWC），并将新手和专家之间的结果进行比较以评估结构效度。任务完成后专家提供的口头评论用于评估表面效度。分析新手重复进行任务的情况，以评估 TURPsim™ 的培训效益。
专家切除前列腺的速度明显更快（p<0.01），并且无组织接触时热凝时间明显更短（p<0.01），明显优于新手。经过练习，新手能够更有效地完成模拟，所有测量参数都有显著改善。重复训练后，新手的表现有所提高，这一点从 TAWC 评分的改善可以看出，与专家组相比，TAWC 评分没有显著差异（p=0.18）。
本研究确立了 TURPsim™ 的表面效度和结构效度。还证明了使用该工具培训新手的潜在益处。
