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Improvement of three-dimensional motion sickness using a virtual reality simulator for robot-assisted surgery in
Ryo Takata1, Mitsugu Kanehira1, Yoichiro Kato1
1Department of Urology, Iwate Medical University, 1-1-1 Idaidori, Shiwa-gun, Iwate Prefecture, 028-3694, Yahaba-cho, Japan.
Background:
A virtual reality (VR) simulator is utilized as an inexpensive tool for gaining basic technical competence in robotic-assisted surgery (RAS). We evaluated operator 3D motion sickness while using a VR simulator and assessed whether it can be reduced by repeating the training.
Methods:
This prospective observational study was conducted at the Department of Urology, Iwate Medical University, a tertiary training hospital in an urban setting. A total of 30 undergraduate medical students participated in the study. We compared whether the VR simulator improved the students' skills in operating the da Vinci robot. Fifteen students underwent training with a VR simulator for 4 h a day for 5 days. Then, motion sickness was determined using the Visual Analog Scale and Simulator Sickness Questionnaire (SSQ) before and after the training.
Results:
Manipulation time significantly improved after training compared to before training (293.9 ± 72.4 versus 143.6 ± 18.4 s; p < 0.001). Although motion sickness worsened after each training session, it gradually improved with continuous practice with the VR simulator. SSQ subscores showed that the VR simulator induced nausea, disorientation, and oculomotor strain, and oculomotor strain was significantly improved with repeated training.
Conclusions:
In undergraduate students, practice with the VR simulator improved RAS skills and operator 3D motion sickness caused by 3D manipulation of the da Vinci robot.
