Hyoid Bone Movement at Rest by Peripheral Magnetic Stimulation of Suprahyoid Muscles in Normal Individuals
Hyoid Bone Movement at Rest by Peripheral Magnetic Stimulation of Suprahyoid Muscles in Normal Individuals
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DOI：
10.1111/ner.12777
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发表时间：
2019-07-01
期刊：
影响因子：
2.8
通讯作者：
Saitoh, Eiichi
中科院分区：
文献类型：
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作者：
Kagaya, Hitoshi;Ogawa, Mao;Saitoh, Eiichi
目的神经肌肉电刺激已广泛应用于吞咽障碍患者。然而，通过表面电极获得足够的舌骨运动似乎很困难。本研究的目的是评估舌骨运动在休息时，通过周围磁刺激的舌骨上肌肉在正常人。方法健康成年男性。一个特殊设计的线圈连接到外周磁刺激器。线圈放置在受试者的颏下区域。以30 Hz进行磁刺激2秒。选择的强度水平诱导舌骨移动，而不会对受试者造成无法忍受的疼痛。在舌骨上肌肉的开磁刺激和关磁刺激之间的静止状态下，使用透视以30帧/秒的横向投影识别舌骨。使用数字评定量表（NRS）评价外周磁刺激期间的疼痛。结果11名年龄32 ± 9岁的受试者参加了这项研究。磁刺激导致舌骨向前位移10.9 +/- 2.8 mm，向上位移8.3 +/- 4.1 mm（平均值+/- SD）。磁刺激期间的中位NRS评分为1。结论外周磁刺激是一种无创、简便易行的方法。它不需要皮肤准备，有利于充分舌骨运动，并导致最低程度的疼痛。
Objectives Neuromuscular electrical stimulation has been widely used in patients with dysphagia. However, obtaining sufficient hyoid bone movement through surface electrodes seems difficult. The aim of this study was to evaluate hyoid bone movement at rest through peripheral magnetic stimulation of the suprahyoid muscles in normal individuals. Methods Healthy adult men were recruited. A specially designed coil was connected to the peripheral magnetic stimulator. The coil was placed on the submental area of the subjects. Magnetic stimulation was performed at 30 Hz for 2 sec. The intensity level selected induces hyoid bone movement without causing intolerable pain to the subjects. The hyoid bone at rest between on- and off-magnetic stimulations of the suprahyoid muscles were identified using fluoroscopy at 30 frames/sec in lateral projection. Pain during peripheral magnetic stimulation was evaluated using the numerical rating scale (NRS). Results Eleven subjects aged 32 +/- 9 years participated in this study. Magnetic stimulation resulted in 10.9 +/- 2.8 mm forward displacement and 8.3 +/- 4.1 mm (mean +/- SD) upward displacement of the hyoid bone. The median NRS score during magnetic stimulation was 1. Conclusions Peripheral magnetic stimulation is noninvasive and easy to perform. It does not require skin preparation, facilitates sufficient hyoid bone movement, and causes minimum level of pain.