Both head extension and mouth opening impair the ability to swallow in the supine position
Both head extension and mouth opening impair the ability to swallow in the supine position
复制标题
头部伸展和张口都会损害仰卧位吞咽的能力
DOI：
10.1111/joor.12175
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发表时间：
2014
期刊：
影响因子：
2.9
通讯作者：
Niwa H
中科院分区：
文献类型：
--
作者：
Hanamoto H;Kadono K;Boku A;Kudo C;Morimoto Y;Sugimura M;Niwa H
仰卧位的头部位置和张开的嘴可能会削弱吞咽能力。如果确实发生这种情况，它将导致口腔内液体在牙科治疗期间滞留，这将导致刺激咳嗽反射。本研究旨在探讨头部位置和张口度对吞咽能力的影响。对13名健康成年受试者进行仰卧位吞水试验。受试者被要求一次吞下10毫升注入口腔的水。吞咽后，抽吸残馀口内水，测量其体积。测试过程中还记录了舌骨上(SH)肌的肌电(EMG)。检测SH肌电活动持续时间和SH肌电波幅。分别在3种头位(中立位、伸缩位和屈曲位)和4种张口方式(切缝间距分别为0、20、30和40 mm)下进行吞水试验。受试者的嘴张得越大，吞咽后留在嘴里的水就越多。伸展位的残余水量比中立位和屈曲位的多。随着张口度的增加，SH-EMG的峰值降低。伸展位SH肌活动持续时间长于中立位和屈曲位。伸头和张口可通过延长SH肌肉活动的持续时间而降低其强度，从而导致仰卧位吞咽困难。
Head position and mouth opening in the supine position may impair the ability to swallow. If this does occur, it would lead to retention of intra‐oral fluids during dental treatment, which would lead to stimulation of the cough reflex. This study was conducted to investigate how head position and mouth opening affect swallowing ability. The water swallowing test was performed in 13 healthy adult subjects in the supine position. The subjects were asked to swallow 10 mL of water that was injected into the mouth in a single attempt. After swallowing, the residual intra‐oral water was suctioned and its volume was measured. An electromyogram (EMG) of the suprahyoid (SH) muscles was also recorded during the test. The duration of SH muscle activity and peak amplitude of SH EMG were examined. The water swallowing test was performed under three head positions (neutral, extended and flexed) and four mouth opening patterns (interincisal distances of 0, 20, 30 and 40 mm). The wider the subject opened the mouth, the more the water remained in the mouth after swallowing. The residual volume of water was more in the extended position compared with that in the neutral and flexed positions. Peak amplitude of SH EMG decreased with mouth opening. Duration of SH muscle activity was longer in the extended position than in the neutral and flexed positions. Head extension and mouth opening can induce difficulty in swallowing in the supine position by extending the duration of SH muscle activity while reducing its intensity.