Morimitsu T, Enatsu K, Matsumoto I, Ushisako Y
Acta Otolaryngol. 1981 Mar-Apr;91(3-4):207-14. doi: 10.3109/00016488109138501.
A new method for testing Eustachian tube function using an otoadmittance meter (Tubotympanometry) is reported. The otoadmittance meter is set for the aural reflex test, namely in the position of Y-T- recording. The patient is asked to carry out deep breathing. Valsalva's maneuvre, normal breathing, and swallowing in succession. In normal 40 ears, three types of the tubotympanogram were classified. In type A, observed in 32 ears, the graph shows no changes during deep breathing, a sudden downward deflection with Valsalva's maneuvre, a return to a level after the maneuvre and on repeated swallowing the graph returns to the initial level in stepwise. In type B, observed in 5 ears, the graph returns to the initial level directly after Valsalva's maneuvre without swallowing. This indicates a slightly patent tube, even though in the normal range. Type C was observed in 3 ears of patients who failed to perform Valsalva's maneuvre correctly. In the case of a patent tube, the graph shows a remarkable fluctuation synchronizing with inspiration and expiration. In the case of an occluded tube, the graph shows slower recovery after Valsalva's maneuvre and no complete return to the initial level even after repeated swallowing. In another case of occluded tube, the graph was deflected upward by Valsalva's maneuvre and showed no change on deglutition. The greatest advantage of this test is the simplicity of the equipment and of the test procedure.
报告了一种使用耳声导抗仪测试咽鼓管功能的新方法（鼓室咽鼓管测量法）。耳声导抗仪设置为听觉反射测试，即在Y-T记录位置。要求患者依次进行深呼吸、瓦尔萨尔瓦动作、正常呼吸和吞咽。在40只正常耳朵中，对鼓室咽鼓管图进行了三种类型的分类。在A类中，在32只耳朵中观察到，图表在深呼吸期间无变化，瓦尔萨尔瓦动作时突然向下偏转，动作后恢复到一个水平，反复吞咽时图表逐步恢复到初始水平。在B类中，在5只耳朵中观察到，瓦尔萨尔瓦动作后直接恢复到初始水平，无需吞咽。这表明咽鼓管略有通畅，尽管在正常范围内。C类在3名未能正确进行瓦尔萨尔瓦动作的患者的耳朵中观察到。在咽鼓管通畅的情况下，图表显示与吸气和呼气同步的明显波动。在咽鼓管堵塞的情况下，图表显示瓦尔萨尔瓦动作后恢复较慢，即使反复吞咽也未完全恢复到初始水平。在另一种咽鼓管堵塞的情况下，图表因瓦尔萨尔瓦动作而向上偏转，吞咽时无变化。该测试的最大优点是设备和测试程序简单。
