Margolis R H, Osguthorpe J D, Popelka G R
Acta Otolaryngol. 1978 Nov-Dec;86(5-6):428-36. doi: 10.3109/00016487809107522.
Tympanometry was performed before and after producing specific lesions in the middle ears of cats. The lesions selected for study included stapes fixation, ossicular discontinuity, and scarred tympanic membranes. Stapes fixation resulted in marked increases in middle ear impedance, easily detected with tympanometry. Ossicular discontinuity resulted in complex tympanometric shapes which were easily accounted for by simple interactions between acoustic resistance and reactance. The complex shapes that occurred in normal and abnormal ears with pressure changing from negative to positive resulted from more complicated interactions. Large surgical incisions in the posterior-superior quadrant of the eardrum were quite visible at otoscopy but could not be detected tympanometrically one month after surgery.
在猫的中耳制造特定病变前后进行了鼓室导抗测试。选择用于研究的病变包括镫骨固定、听骨链中断和鼓膜瘢痕化。镫骨固定导致中耳声阻抗显著增加，通过鼓室导抗测试很容易检测到。听骨链中断导致复杂的鼓室导抗测试形状，这可以通过声阻和声抗之间的简单相互作用轻松解释。随着压力从负压变为正压，正常耳和异常耳中出现的复杂形状是由更复杂的相互作用导致的。鼓膜后上象限的大手术切口在耳镜检查时非常明显，但在手术后一个月通过鼓室导抗测试无法检测到。
