Tassew T, Kiessling J
Laryngol Rhinol Otol (Stuttg). 1980 Mar;59(3):166-9.
It is reported on tympanometric investigations of 21 postmortem temporal bones. Tympanograms (220 Hz probe tone) show increasing compliance maxima with stepwise destruction of the sound conduction apparatus. After sucking off peri and endolymph, opening the tympanic cavity and cutting the middle ear muscles compliance increments, however, are rather small and we get tympanograms within normal range. Only when cutting incus-stapes-connection tympanograms exhibit abnormal high compliance maxima. Therefore the value of tympanometry with 220 Hz probe tone should not be overestimated for clinical middle ear diagnosis.
据报道，对21块死后颞骨进行了鼓室声导抗检查。鼓室导抗图（220赫兹探测音）显示，随着声音传导装置的逐步破坏，顺应性最大值增加。然而，在吸出外淋巴和内淋巴、打开鼓室并切断中耳肌肉后，顺应性增加相当小，我们得到的鼓室导抗图在正常范围内。只有在切断砧镫连接时，鼓室导抗图才显示出异常高的顺应性最大值。因此，对于临床中耳诊断，220赫兹探测音鼓室声导抗测量的价值不应被高估。
