INFLUENCE OF BOLUS VOLUME ON SWALLOW-INDUCED HYOID MOVEMENT IN NORMAL SUBJECTS
INFLUENCE OF BOLUS VOLUME ON SWALLOW-INDUCED HYOID MOVEMENT IN NORMAL SUBJECTS
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DOI：
10.2214/ajr.150.6.1307
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发表时间：
1988-06-01
影响因子：
5
通讯作者：
KERN, MK
中科院分区：
文献类型：
--
作者：
DODDS, WJ;MAN, KM;KERN, MK
吞咽通常引起舌骨的上前移位，导致喉头抬高和食管上括约肌打开。舌骨运动的大小，然而，还没有量化相对于吞咽丸剂的体积。在这项研究中，我们确定了舌骨的上和前运动的大小与吞咽不同体积的钡有关。我们对15名无咽食管症状且咽食管运动功能正常的受试者进行了2- 20ml剂量的侧位放射影像检查。分析表明，吞丸的体积与舌骨上、前运动的大小有显著的直接关系。例如，这些运动的平均值为13.0 +-。5毫米和13.5毫米。2毫升的剂量为6毫米，而14.8毫米。5毫米和16.7 +-。10ml丸5mm。研究结果表明舌骨的吞咽运动值需要与吞咽的体积挂钩。结果表明，脑干中产生口腔和咽部吞咽的神经程序并不是完全定型的，而是由体积依赖的感觉反馈调节的。
Swallowing normally elicits a superior-anterior excursion of the hyoid that contributes to elevation of the larynx and opening of the upper esophageal sphincter. The magnitude of hyoid movements, however, has not been quantitated with respect to the volume of the swallowed bolus. In this study, we determined the magnitude of superior and anterior movements of the hyoid associated with swallows of barium of different volumes. Lateral videoradiographic images of 2- to 20-ml boluses of barium were obtained in 15 subjects who had no pharyngoesophageal symptoms and had normal pharyngoesophageal motor function. Analysis indicated that a significant direct correlation existed between the volume of the swallowed bolus and the magnitude of the superior and anterior movements of the hyoid. For example, the mean values for these respective movements iwere 13.0 .+-. 5 mm and 13.5 .+-. 6 mm for a 2-ml bolus, compared with 14.8 .+-. 5 mm and 16.7 .+-. 5 mm for a 10-ml bolus. The findings indicate that values of deglutitive movement of the hyoid need to be indexed to the volume of the swallowed bolus. The results imply that the neural program in the brainstem that generates the oral and pharyngeal phases of swallowing is not completely stereotyped, but rather is modulated by volume-dependent sensory feedback.