Face-, expert, and referent validity of the Xitact LS500 - Laparoscopy Simulator
Face-, expert, and referent validity of the Xitact LS500 - Laparoscopy Simulator
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DOI：
10.1007/s00464-001-9229-9
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发表时间：
2002-12-01
影响因子：
3.1
通讯作者：
Jakimowicz, J
中科院分区：
文献类型：
--
作者：
Schijven, M;Jakimowicz, J
背景：本研究旨在建立Xitact LS500的面孔效度、专家效度和参照效度。Xitact LS500是一个虚拟现实的腹腔镜胆囊切除术模拟器。参与者在Xitact模拟器上接受了指导下的动手“参观”。根据外科医生的经验水平对数据进行分析，得到87名外科医生的“专家组意见”和33名外科医生的“参照组意见”。结果：大多数受访者认为Xitact有潜力成为一种有用的工具，用于腹腔镜胆囊切除术的教学(93.1%)和绩效评估(79.3%)。专家小组和参考小组的意见对所提交的任何一项陈述都没有明显不同。两组对虚拟腹腔镜手术环境的真实性的看法都是有利的，尽管它被认为还不完美。Xitact的“触觉反馈”感觉是一个有待进一步开发的参数。结论：专家和参考外科医生都认为Xitact在腹腔镜教学中是一种重要和有用的工具。还需要进行进一步的研究，以确定模拟器的结构有效性(例如，模拟器在多大程度上逻辑上包含在获取技能的理论框架中，这是腹腔镜胆囊切除术所需的)，以测量腹腔镜胆囊切除术过程中学习曲线的缩短，并最终证明其在外科课程中的使用是合理的。
Background: This study was undertaken to establish face-, expert, and referent validity of the Xitact LS500; a virtual reality laparoscopic cholecystectomy simulator.Methods: A four-page, 20-item structured questionnaire was presented to 120 surgeons attending a surgical convention. Participants received an instructed hands-on "tour" on the Xitact simulator. Data were analyzed according to the level of experience of the surgeon, resulting in an "expert group opinion" of 87 surgeons and a "referent group opinion" of 33 surgeons.Results: The majority of respondents believe Xitact has the potential to become a useful tool in teaching (93.1 %) and measuring performance assessment (79.3%) in laparoscopic cholecystectomy. Expert- and referent-group opinion does not differ significantly on any of the presented statements. The opinion regarding the realism of the virtual laparoscopic cholecystectomy environment is favorable among both groups, although it is considered not yet perfect. The "haptic feedback" sensation of the Xitact is a parameter that needs further development.Conclusions: Both expert- and referent surgeons value Xitact to be an important and useful tool in the laparoscopic teaching setting. Further studies need to be performed to establish the construct validity of the simulator (e.g., to what extent is the simulator logically encompassed into a theoretical framework of acquiring skills, needed for the laparoscopic cholecystectomy) to measure shortening of learning curves on the laparoscopic cholecystectomy procedure, and ultimately to justify its use in the surgical curriculum.