Ahlberg G, Heikkinen T, Iselius L, Leijonmarck C-E, Rutqvist J, Arvidsson D
Department of Surgery, Karolinska Hospital, SE-171 76 Stockholm, Sweden.
Surg Endosc. 2002 Jan;16(1):126-9. doi: 10.1007/s00464-001-9025-6. Epub 2001 Nov 12.
The development of computerized surgical simulators in a virtual reality environment demands models for proper validation. Recent investigations have shown that a virtual reality simulator (MIST-VR) is a reliable tool for the assessment of laparoscopic psychomotor skills and that it improves the automation of the so-called fulcrum effect. Therefore, we set out to determine whether training with the MIST-VR would improve the surgical performance of surgically inexperienced medical students and to see if results obtained in the simulator would correlate with surgical performance.
A total of 29 medical students were randomized into two groups. One group received preoperative MIST-VR training. Both groups then performed a simulated laparoscopic appendectomy in a pig. The operations were videotaped and examined by three independent observers.
There was no significant difference in performance between the two groups. The performance with the MIST-VR correlated with the results in surgery.
A method that can measure surgical skill, based on the scoring of independent observers who view videotaped performances, seems to be reliable. MIST-VR did not improve the surgical skills of the subjects, but the results with MIST-VR did predict surgical outcome.
在虚拟现实环境中开发计算机化手术模拟器需要合适的验证模型。最近的研究表明，虚拟现实模拟器（MIST-VR）是评估腹腔镜手术心理运动技能的可靠工具，并且它提高了所谓支点效应的自动化程度。因此，我们着手确定使用MIST-VR进行训练是否会提高缺乏手术经验的医学生的手术表现，以及模拟器中获得的结果是否与手术表现相关。
总共29名医学生被随机分为两组。一组接受术前MIST-VR训练。然后两组都在猪身上进行了模拟腹腔镜阑尾切除术。手术过程被录像，并由三名独立观察员进行检查。
两组之间的表现没有显著差异。MIST-VR的表现与手术结果相关。
一种基于观看录像表现的独立观察员评分来测量手术技能的方法似乎是可靠的。MIST-VR并没有提高受试者的手术技能，但MIST-VR的结果确实可以预测手术结果。
