Pathophysiology of the paranasal sinuses.
Pathophysiology of the paranasal sinuses.
复制标题
鼻旁窦的病理生理学。
DOI：
10.3109/00016487709128804
复制
发表时间：
1977
影响因子：
1.4
通讯作者：
R. Aust
中科院分区：
文献类型：
--
作者：
B. Drettner;R. Aust
受试者平卧时上颌口比坐时狭窄。窦内氧含量与口的通畅程度有关，并在一定程度上与口的大小有关。窦内90%的气体交换通常只需要5分钟。鼻腔呼吸比口腔呼吸交换更快。上颌窦黏膜血流量相对较高。粘膜的氧吸收通常是灌注受限的。吸收的氧气有相当一部分直接被粘膜利用，而不被血流吸收。
The maxillary ostium is narrower when the subject is recumbent than when sitting. The oxygen content in the sinus is related to the patency of the ostium and to some extent to its size. A 90% gas exchange in the sinus normally requires only 5 minutes. The exchange is faster during nasal than during oral breathing. The mucosa of the maxillary sinus has a relatively high blood flow. Oxygen absorption by the mucosa is normally perfusion limited. A considerable part of the absorbed oxygen is utilized directly by the mucosa and not taken up by the blood flow.