Effect of Temporary Closure of Oronasal Fistulae on Levator Veli Palatini Muscle Activity
Effect of Temporary Closure of Oronasal Fistulae on Levator Veli Palatini Muscle Activity
复制标题
暂时闭合口鼻瘘对提上睑提肌活动的影响
DOI：
10.1597/1545-1569_1997_034_0505_eotcoo_2.3.co_2
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
T. Wada
中科院分区：
文献类型：
--
作者：
T. Tachimura;H. Hara;H. Koh;T. Wada
目的：本研究的目的是从肌电角度阐明封闭口鼻瘘对腭咽闭合不全患者和腭咽闭合功能正常患者的提肌活动和口腔气压的影响。研究对象：5例腭咽闭合功能正常患者和6例腭咽闭合功能不全患者。所有受试者都有一个口鼻瘘在前1/3的硬腭部，尽管一期封闭的腭部推后手术。观察指标：用蘸了生理盐水的棉签堵住瘘管，保持瘘管打开，测量腭帆提肌平滑的肌电活动。结果：无论腭咽闭合功能如何，封闭瘘口条件下口腔气压均大于开放瘘口条件下的口腔气压。在腭咽闭合功能正常的患者中，闭合状态下的腭帆提肌活动明显低于开放状态，而在腭咽闭合功能不全的患者中，闭合状态下的腭帆提肌活动无明显变化。结论：口腔鼻瘘的暂时闭合对腭咽闭合功能有一定的影响，腭咽闭合功能正常的患者比腭咽闭合功能不全的患者影响更大。
Objective: The objective of this study was to clarify electromyographically the effects of closing an oronasal fistula on levator muscle activity and oral air pressure in patients with velopharyngeal incompetence and in those with adequate velopharyngeal function. Subjects: Five patients with adequate velopharyngeal function and six patients with velopharyngeal incompetence were studied. All subjects had an oronasal fistula at the anterior third portion of the hard palate in spite of primary palatal closure using palatal push-back operation. Outcome Measures: The smoothed electromyographic activity of the levator veli palatini muscle was measured with the fistula closed with a cotton swab dipped in saline and with the fistula left open. Results: Under the closed fistula condition, oral air pressure was greater than that observed under the open fistula condition irrespective of velopharyngeal function. Levator veli palatini muscle activity was significantly lower in magnitude under the condition of closure than under the open condition in the patients with adequate velopharyngeal function, whereas in those with velopharyngeal incompetence, it was not significantly changed. Conclusions: The results suggest that velopharyngeal function is affected by temporary closure of an oronasal fistula, and that the magnitude of the effect is greater for subjects with adequate velopharyngeal function than for subjects with velopharyngeal incompetence.