Zhen H T, Wang C F, Cui Y H, Gao Q X, Ge X
Department of Otolaryngology, Tongji Hospital, Tongji Medical University, Wuhan 430030.
Lin Chuang Er Bi Yan Hou Ke Za Zhi. 2000 Apr;14(4):160-1.
To study the practicality of a new method to evaluate eustachian tube function.
We acquired the tympanogram of 30 normal persons (60 cases) by means of classical tympanometry, Toynbee test and valsalva maneuvre respectively, the peak point of each tympanogram was P1, P2 and P3 corresponding P1 -P2 > 10 daPa or Pmax-Pmin > 15 daPa was accepted as normal.
70% cases were accepted normal, whose peak point shifted obviously.
The method is a simple, objective and practical one; If the peak point shifts obviously, the function of ET is normal; On the contrary, if the function of ET may be abnormal, other tests should be performed.
Zotero 插件