Koyama Yoshito, Ohmori Nobuyuki, Momose Hideya, Yamada Shin-Ichi, Kurita Hiroshi
Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan.
Department of Dentistry and Oral Surgery, Omachi General Hospital, Omachi, Japan.
J Dent Sci. 2022 Jul;17(3):1185-1192. doi: 10.1016/j.jds.2021.12.015. Epub 2022 Jan 7.
BACKGROUND/PURPOSE: A sensor sheet comprising multiple electromyography electrodes that can be used to measure a series of multiple muscle activities related to swallowing was recently developed. In this study, we aimed to evaluate its utility in detecting swallowing disorders with a new method for the identification of muscle activity.
All participants were evaluated by using the repetitive saliva swallowing test and modified water swallowing test and were classified accordingly into participants with (n = 21; mean age, 81.6 [standard deviation, 10.1] years) and those without (n = 41; mean age, 70.0 [8.4] years) dysphagia. The sheet contains four pairs of electrodes, and surface electromyography (sEMG) was performed on the suprahyoid (position A: upper front of the suprahyoid muscles; position B: bottom rear of the suprahyoid muscles) and infrahyoid (position C: above the infrahyoid muscles; position D: beneath the infrahyoid muscles) muscles while the participants swallowed liquid, thickened water, paste, and jelly. The sEMG findings, including the duration of swallowing waveforms and the delay in swallowing onset from position A to positions B, C, and D, were compared between the groups.
The duration of muscle activity differed between the groups in the infrahyoid muscles when jelly (Mann-Whitney test; position C, = 0.007 and position D, = 0.018) and thickened water (position C, = 0.033) were swallowed.
Our study demonstrates the utility of a novel sensor sheet developed for detecting swallowing disorders by using visual methods for identification of muscle activity.
背景/目的：最近开发了一种包含多个肌电图电极的传感片，可用于测量与吞咽相关的一系列多种肌肉活动。在本研究中，我们旨在通过一种识别肌肉活动的新方法评估其在检测吞咽障碍方面的效用。
所有参与者均通过重复唾液吞咽试验和改良水吞咽试验进行评估，并据此分为吞咽困难组（n = 21；平均年龄，81.6 [标准差，10.1] 岁）和无吞咽困难组（n = 41；平均年龄，70.0 [8.4] 岁）。该传感片包含四对电极，在参与者吞咽液体、增稠水、糊状物和果冻时，对上颈部肌肉（位置A：上颈部肌肉的上前部；位置B：上颈部肌肉的后下部）和下颈部肌肉（位置C：下颈部肌肉上方；位置D：下颈部肌肉下方）进行表面肌电图（sEMG）检测。比较两组之间的sEMG结果，包括吞咽波形的持续时间以及从位置A到位置B、C和D的吞咽起始延迟。
吞咽果冻（Mann-Whitney检验；位置C，P = 0.007；位置D，P = 0.018）和增稠水（位置C，P = 0.033）时，两组在下颈部肌肉的肌肉活动持续时间存在差异。
我们的研究证明了一种新型传感片的效用，该传感片通过视觉方法识别肌肉活动来检测吞咽障碍。
