二氧化碳呼吸对耳蜗血流的影响。
The effect of CO2-breathing on cochlear blood flow.
作者信息
Hultcrantz E, Larsen H C, Angelborg C
出版信息
Arch Otorhinolaryngol. 1980;228(3):211-5. doi: 10.1007/BF00454230.
PMID:6775623
Abstract
The cochlear blood flow was measured with the microsphere methods, before and during CO2-inhalation, in anesthetized rabbits. Different gas mixtures and exposure times were used. The greatest increase of cochlear blood flow was measured after 5 min inhalation of 7% CO2 in air (115%) and the least increase (44%) in animals breathing 7% CO2 in oxygen. The difference is explained as due to a vasoconstriction caused by a high oxygen tension counteracting the vasodilating effect of CO2.
摘要
在麻醉兔身上，于吸入二氧化碳之前及期间，采用微球法测量耳蜗血流量。使用了不同的气体混合物和暴露时间。吸入空气中7%二氧化碳5分钟后，测得耳蜗血流量增加最多（115%），而在呼吸氧气中7%二氧化碳的动物中增加最少（44%）。这种差异被解释为是由于高氧张力引起的血管收缩抵消了二氧化碳的血管舒张作用。
Zotero 插件