van Overbeek J J, Wit H P, Paping R H, Segenhout H M
Laryngoscope. 1985 May;95(5):582-4. doi: 10.1288/00005537-198505000-00011.
Whether the occlusion between hypopharynx and esophagus is established by anatomical relations and tissue elasticity or by a functional resting tone of the muscle fibers is not quite clear. This study describes simultaneous electromyography (EMG) and electromanometry in the pharyngoesophageal segment to solve this problem and investigate the complex mechanism of deglutition. To register the EMG from the hypopharyngeal constrictor muscle and the upper esophageal sphincter (UES), two copper wire electrode pairs with hooked bare ends were used. These electrodes were introduced into the muscles through a rigid esophagoscope. It is demonstrated that at rest muscle activity is present in the UES. This activity disappears during the relaxation period. Simultaneous manometry and EMG is a valuable supplement to diagnostic procedures in dysphagia patients.
下咽与食管之间的闭塞是由解剖关系和组织弹性建立的，还是由肌纤维的功能性静息张力建立的，目前尚不完全清楚。本研究描述了咽食管段的同步肌电图（EMG）和食管测压，以解决这个问题并研究吞咽的复杂机制。为了记录下咽缩肌和食管上括约肌（UES）的肌电图，使用了两对末端带钩的裸铜丝电极。这些电极通过硬食管镜插入肌肉。结果表明，在静息状态下，UES存在肌肉活动。这种活动在松弛期消失。同步测压和肌电图是吞咽困难患者诊断程序的有价值补充。
