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首页> 外文期刊>Auris, nasus, larynx >Endoscopic evaluation of dynamic narrowing of the pharynx by the Bernouilli effect producing maneuver in patients with obstructive sleep apnea syndrome.
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Endoscopic evaluation of dynamic narrowing of the pharynx by the Bernouilli effect producing maneuver in patients with obstructive sleep apnea syndrome.

机译：内窥镜检查通过阻塞性睡眠呼吸暂停综合症患者的伯努利效应产生的动作来动态缩小咽部。

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OBJECTIVE: To evaluate the dynamic narrowing of the retropalatal pharynx by the Bernouilli effect producing maneuver (BEPM) in patients with obstructive sleep apnea syndrome (OSAS) with computer-assisted analysis of nasopharyngoscopic images. METHODS: Endoscopic images of the retropalatal pharynx were obtained and their area was measured by NIH imaging. Because changes in distance between the CCD camera of the nasopharyngoscope and the site of pharyngeal narrowing decreased the measurement reliability, the area of the retropalatal pharynx was divided by the square of the uvula's lateral side length for normalization. We calculated both normalized areas: the pharyngeal narrowing during quiet nasal breathing and that during BEPM, which is a forced inspiration through the nose with the mouth closed. The narrowing rate was then calculated as an index of the pharyngeal dynamics. RESULTS: Nasopharyngoscopy combined with BEPM showed a medial motion of the lateral walls of the pharynx due to the Bernoulli effect, which is an increase in speed and a reduction in pressure of a moving gas passing through a tube constriction. There was a significant correlation between the narrowing rate of the retropalatal pharynx and the apnea index. The decrease in intraluminal pressure at the narrowing combined with the higher atmospheric pressure exercised on the lateral pharyngeal walls would induce the pharyngeal collapse. There was also a significant correlation between the normalized retropalatal are and the apnea index. CONCLUSION: Nasopharyngoscopy with BEPM suggest that in addition to the static narrowing, the dynamic narrowing of the retropalatal pharynx contributes to the pathophysiology of OSAS. The correlation between the apnea index and both the normalized retropalatal area and the narrowing rate of the retropalatal pharynx due to the Bernoulli effect constitute a quantitative and predictive alternative to the evaluation and understanding of the upper airways changes in OSAS.
机译：目的：通过计算机辅助分析鼻咽镜图像，评估Bernouilli效应产生动作（BEPM）对阻塞性睡眠呼吸暂停综合症（OSAS）患者的后pal咽的动态变窄。方法：获得pal后咽的内窥镜图像，并通过NIH成像测量其面积。由于鼻咽镜的CCD摄像头和咽狭窄部位之间的距离变化降低了测量的可靠性，因此将pal后咽的面积除以悬雍垂的侧边长度的平方以进行标准化。我们计算了两个标准化区域：安静的鼻呼吸时的咽狭窄和BEPM期间的狭窄，这是在嘴闭合的情况下通过鼻子的强制吸气。然后计算变窄率，作为咽部动力学的指标。结果：鼻咽镜与BEPM结合显示，由于伯努利效应，咽部侧壁发生了内向运动，这是速度的增加和穿过管颈的运动气体的压力降低。 pal后咽变窄率与呼吸暂停指数之间存在显着相关性。狭窄处管腔内压力的降低与在咽侧壁上施加的较高大气压相结合将导致咽塌陷。标准化的pal后区域和呼吸暂停指数之间也存在显着相关性。结论：鼻咽镜检查与BEPM提示，除了pal骨的静态变窄外，the后咽部的动态变窄也有助于OSAS的病理生理。呼吸暂停指数与归一化后pal面积和因伯努利效应引起的pal后咽变窄率之间的相关性构成了评估和了解OSAS上呼吸道变化的定量和预测性选择。

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