Department of General, Visceral, and Transplantation Surgery, University Hospital of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany.
Institute of Medical Biometry and Informatics, University of Heidelberg, Im Neuenheimer Feld 130.3, 69120, Heidelberg, Germany.
Surg Endosc. 2020 Feb;34(2):869-879. doi: 10.1007/s00464-019-06842-7. Epub 2019 May 28.
Laparoscopic suturing and knot tying is essential for advanced laparoscopic procedures and requires training outside of the operating room. However, personal instruction by experienced surgeons is limitedly available. To address this, the concept of combining e-learning with practical training has become of interest. This study aims to investigate the influence of the first-person perspective in instructional videos, as well as the feasibility of a completely self-directed training curriculum for laparoscopic suturing and knot tying.
Ninety-one laparoscopically naïve medical students were randomised into two groups training with e-learning videos in either the first-person perspective (combining endoscopic view and view of hands/instruments/forearm motion) or the endoscopic view only. Both groups trained laparoscopic suturing and knot tying in teams of two until reaching predefined proficiency levels. Blinded, trained raters regularly assessed the participants' performance by using validated checklists. After training, participants filled out questionnaires regarding training experience and personal characteristics.
Average training time to reach proficiency did not differ between groups [first-person perspective (min): 112 ± 44; endoscopic view only (min): 109 ± 47; p = 0.746]. However, participants from both groups perceived the first-person perspective as useful for learning new laparoscopic skills. Both groups showed similar baseline performances and improved significantly after training [Objective Structured Assessment of Technical Skills (OSATS) (max. 37 points): first-person perspective: 30.3 ± 2.3; endoscopic view only: 30.8 ± 2.3]. All participants managed to reach proficiency, needing 8-43 attempts without differences between groups. Visuospatial abilities (mental rotation) seemed to enhance the learning curve.
Modifying instructional videos to the first-person perspective did not translate into a better performance in this setting but was welcomed by participants. Completely self-directed training with the use of e-learning can be a feasible training approach to achieve technical proficiency in laparoscopic suturing and knot tying in a training setting.
腹腔镜缝合和打结对于高级腹腔镜手术至关重要,需要在手术室之外进行培训。然而,经验丰富的外科医生的个人指导是有限的。为了解决这个问题,将电子学习与实践培训相结合的概念变得很有吸引力。本研究旨在探讨教学视频中第一人称视角的影响,以及完全自主的腹腔镜缝合和打结培训课程的可行性。
91 名腹腔镜新手医学学生被随机分为两组,分别使用第一人称视角(结合内镜视图和手部/器械/前臂运动视图)或仅内镜视图的电子学习视频进行培训。两组均以两人一组的形式进行腹腔镜缝合和打结培训,直到达到预定的熟练水平。经过培训的受过训练的评估者使用经过验证的清单定期评估参与者的表现。培训后,参与者填写了关于培训经验和个人特征的问卷。
达到熟练程度的平均培训时间在两组之间没有差异[第一人称视角(分钟):112±44;仅内镜视图(分钟):109±47;p=0.746]。然而,两组参与者都认为第一人称视角有助于学习新的腹腔镜技能。两组在培训后表现均有所提高[客观结构化手术技能评估(OSATS)(最高分 37 分):第一人称视角:30.3±2.3;仅内镜视图:30.8±2.3]。所有参与者都成功达到了熟练程度,每组需要 8-43 次尝试,两组之间没有差异。空间认知能力(心理旋转)似乎增强了学习曲线。
在这种情况下,将教学视频修改为第一人称视角并没有提高表现,但受到了参与者的欢迎。完全自主的电子学习培训可以是一种可行的培训方法,可在培训环境中实现腹腔镜缝合和打结的技术熟练程度。