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对慢性中耳炎术前咽鼓管功能试验的价值有很多不同意见,因为假阴性率很高以及对手术预后估计很差,甚至有人对试验的意义提出异议。许多学者采用中耳负压平衡法检查咽鼓管功能,人工造成中耳负压,正常者经吞咽1～2次即取得平衡。病耳鼓室内负压能取得全部或局部平衡者为7.5～70％不等,平均为46％。然而负压平衡试验显示异常者经鼓室成形有的还是获得良好效果,因此有人认为负压平衡试验对咽鼓管功能估价的价值不大, 本文第一作者(1977)曾首先应用声管测量
There are many different opinions about the value of preoperative Eustachian tube function tests for chronic otitis media because of the high false-negative rate and the poor prognosis of the surgery. Some even challenge the significance of the trial. Many scholars use the middle ear negative pressure balance method to check the Eustachian tube function, causing artificial negative pressure, normal persons swallowing 1 or 2 times to achieve balance. Eustachian chamber negative pressure can achieve full or partial balance of 7.5 to 70%, with an average of 46%. However, the negative pressure balance test showed that some of the abnormal tympanoplasty or get good results, so some people think that negative pressure balance test evaluation of eustachian tube function is of little value, the first author (1977) was the first to use acoustic measurement