Annals of Otolaryngology Head and Neck Surgery (ISSN 2835-7132) | Volume 1, Issue 1 | Research Article | Open Access

Desensitization of Motion Sickness by Device-assisted Canalith Repositioning Procedure

Entong Wang*

Department of Otolaryngology Head and Neck Surgery, the Electric Power Teaching Hospital, the Capital Medical University, A1 Taipingqiao Xili, Beijing 100073, China

*Correspondence to: Entong Wang 

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Motion sickness (MS) is a common syndrome induced by motion stimulation. Individual susceptibility to MS is key to the development of MS. We propose a hypothesis that displaced otoconia into semicircular canals can increase individual susceptibility to MS and thus Canalith Repositioning Procedure (CRP) can decrease the susceptibility to MS. With a before-after controlled study, we investigated the efficacy of CRP for the desensitization of MS. Seventy-one healthy subjects (23 men and 48 women; mean age of 35.0 years), each having a history of MS and undergoing an initial Off-Vertical Axis Rotation (OVAR) test to induce MS for evaluating the susceptibility to MS, received CRPs one time per week and totally three times in consecutive three weeks. One week after final CRP, MS susceptibility was re-evaluated with OVAR. The severity of OVAR-induced MS was scored with visual analogue scale. Results showed after three CRPs, 64 (90.1%) of 71 subjects showed the reduced susceptibility to MS, with a significant difference in the mean scores of the OVAR-induced MS before and after the CRPs (6.86 ± 1.31 vs. 5.00±1.38, p < 0.001). It is indicated that the device-assisted CRP is a novel, effective, and promising desensitization therapy for MS.


Canalith Repositioning Procedure; Motion sickness; Off-Vertical Axis Rotation


Xizheng Shan, Xin Peng, Lingling Zhou, Entong Wang.Desensitization of Motion Sickness by Device-assisted Canalith Repositioning Procedure. Annal of Otol Head and Neck Surg. 2022;1(1):1-10.