著者

渋沢 三伸 矢野 一彦

出版者

Japanese Society of Otorhinolaryngology-Head and neck surgery

雑誌

日本耳鼻咽喉科学会会報 (ISSN:00306622)

巻号頁・発行日

vol.93, no.1, pp.1-5, 1990-01-20 (Released:2008-03-19)

参考文献数

4

被引用文献数

2 1

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Many authors described the clinical importance of asymmetry of the laryngeal framework. However, its pathogenesis is generally unknown. In this study, CT images of 315 Japanese subjects were investigated to define the laryngeal position relative to the midline of the cervical vertebra.The CT slice of each subject within 5mm cephalad of the cricoarytenoid joint was traced. Then, the deviation and rotation angles were measured using our method.Seventy one percent of the subjects' larynges deviated and/or rotated to the right side, while 17% to the left side. Six percent showed neither deviation nor rotation. As to the rest of 6%, deviation and rotation were in opposite directions. Besides, the length of the thyroid alae were measured in 282 subjects. Left ala was longer in 55%, and right was in 23%, and almost equal in 22%.The conclusions are as follows, 1. The majority of the subjects' CT images showed deviation and/or rotation of the laryngeal framework to the right side.2. So called idiopathic laryngeal deviation is a case which observed in those cases with remarkable deviation and/or rotation of the laryngeal framework.3. Aging seemed to be an important factor in accerelation of the laryngeal deviation and rotation.4. The type of diseases and the side of mass lesions had no statistical significance in deviation and rotation of the larynx.

著者

大久保 仁 渡辺 勇 石川 紀彦 渋沢 三伸 石田 博義 大柿 徹 大木 幹文 羽成 敬一

出版者

耳鼻咽喉科臨床学会

雑誌

耳鼻咽喉科臨床 (ISSN:00326313)

巻号頁・発行日

vol.78, no.4, pp.495-499, 1985

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The Eustachian tube opens and closes in response to swallowing movements. Sonotubometry records these opening and closing movements as changes in sound pressure. Moreover, it shows that the timing of the opening and closing of the Eustachian tube varies with the material swallowed (saliva, Barium, liquid, etc.) even in healthy adults. These differences effect the interpretation of the test results. We considered that the soft palate might have some relationship to nasal closure when the nasopharynx is closed in response to swallowing movements.<br>Since the contribution of the soft palate to nasopharyngeal closing can be estimated by observing pressure changes, its relationship to the tubal opening and closing time was examined by combining various swallowing movements with sonotubometry during Toynbee's maneuver. It was found that the incease in intranasal pressure during saliva swallowing was lower than that during liquid swallowing; however, its decrease was greater. This may indicate that the soft palate is moved more voluntarily during swallowing behavior which requires an increased negative pressure of the pharynx. It was further estimated that the movement of various muscular groups involved in the tubal opening may also be activated, ultimately providing more positive results sonotubometry.