中耳の換気からみた中耳手術

概要

論文の詳細を見る
Transmucosal gas exchange and aeration of the middle ear were examined in patients who had had middle ear surgery for otitis media.1. Both the gas exchange function and aeration in the mastoid were lost after complete mastoidectomy.2. When the posterior wall of the external auditory canal was reconstructed by soft tissue only such as a temporal fascia, it retracted in all the 8 mastoidectomized ears postoperatively but in only 1 of the 3 ears in which the mastoid mucosa was preserved totally or partially.3. Whether aeration in the mastoid cavity recovered after middle ear surgery depended only on whether or not the mastoid mucosa was preserved even partially, and not on whether anterior or posterior tympanotomy was performed.On the basis of these results, we make the following practical points necessary for middle ear surgery:1. Preservation of the mastoid mucosa is most important for the recovery of the ventilation function and aeration of the mastoid cavity.2. The canal-down technique is recommended when the mastoid mucosa cannot be preserved.3. When the mastoid mucosa is preserved, especially if it is continuous with that in the epitympanum, but the bony ear canal cannot be preserved, the ear canal need not be reconstructed by solid tissue.
耳鼻咽喉科臨床学会の論文
1995-09-01