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以前认为外淋巴瘘是听损伤的原因,手术中鉴别外淋巴瘘是很困难的,因有若干镰刀状粘膜窗帘阻挡了圆窗的观察,很难鉴别为“外流的外淋巴”。作者介绍以下方法:鼓室探查时用麻醉术,可保证中耳腔无局麻的液体。打开鼓室后直接放一小块干海绵块在窗龛内,然后将同样大小第二块放于鼓岬,如液体只充满在圆窗龛内的小块,很可能有外淋巴瘘存在。为进一步证实可将小块放于葡萄糖试条上,窗龛内小块颜色改变可证实有外淋巴瘘。如二块海绵球充满葡萄糖阴性液体,则为中耳腔过多
It was previously thought that external lymphatic fistula is the cause of injury, the identification of perilymphatic fistula surgery is very difficult because of a number of sickle-shaped mucosal curtain blocking the observation of the round window, it is difficult to identify as “efflux of the perilymph.” The author describes the following methods: anesthesia tympanometry to ensure that the middle ear cavity without local anesthetic liquid. Open the tympanum directly after putting a small piece of dry sponge in the window niche, and then put the same size second promontory promontory, such as liquid filled only in the round window niche small pieces, there is likely to have a lymphatic fistula. In order to further confirm that small pieces can be placed on the glucose test strips, small changes in the color of the window niches may prove that perilymph fistula. If two sponge balls filled with glucose-negative fluid, then the middle ear cavity too much