The nasal airflow in noses with septal perforation: a model study.

S Grützenmacher, R Mlynski, C Lang, S Scholz, R Saadi, G Mlynski
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引用次数: 25

Abstract

Background: Septal perforation is a common clinical problem in rhinology. Affected patients suffer from a dry nose, crusts as well as recurrent epistaxis and sometimes an inspiratory whistle. The aim of this study was to investigate the underlying flow dynamic mechanisms.

Methods: The physical flow effects of such pathologies were examined in functional nose models (box models) and anatomically exact models of the nose. Therefore, septal perforations of different sizes and localisations were studied in straight and deviated nasal septa.

Results and conclusions: It could be seen that the localisation of the perforation has no impact on the flow pattern. In large septal perforations, the air jet collides with the posterior edge of the perforation and disintegrates turbulently. Since airflow is physiologically turbulent in the posterior part of the nose, posterior perforations do not cause clinical complaints. The inspiratory whistling sound during respiration is based on the principle of a lip whistle. Large perforations do not cause a whistling sound. The necessary high flow velocity needed in large perforations is usually not achievable.

鼻中隔穿孔鼻腔气流的模型研究。
背景:鼻中隔穿孔是鼻科常见的临床问题。受影响的患者会出现鼻子干燥、结痂以及反复发作的鼻出血,有时还会出现吸气性口哨声。本研究的目的是探讨潜在的流动动力学机制。方法:在功能性鼻模型(盒型鼻模型)和解剖精确鼻模型上检测这些病变的物理流效应。因此,我们对直鼻中隔和偏鼻中隔不同大小和位置的穿孔进行了研究。结果与结论:可以看出,穿孔的定位对流型没有影响。在较大的鼻中隔穿孔中,气流与穿孔后缘碰撞并剧烈解体。由于气流在鼻后部是生理性的湍流,后部穿孔不会引起临床症状。呼吸时的呼入声是基于唇哨的原理。大的穿孔不会产生口哨的声音。大射孔所需的高流速通常是无法实现的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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