Xiao Sheping, Tan Daizhong, Liao Minqing, Yang Lulin, Tu Xuefeng
Department of Otorhinolaryngology, Lecong Hospital, Shunde District, Guangdong, 528315.
Lin Chuang Er Bi Yan Hou Ke Za Zhi. 2006 Apr;20(7):306-8, 311.
To evaluate the Eustachian tube function with impedance audiometry of the various types, durations and status of chronic suppurative otitis media.
The Eustachian tube functions of 368 patients (402 ears) of chronic suppurative otitis media were measured by the manual model of reading meter and regulating air pressure with impedance audiometry. The data were analysed statistically.
The average positive opening pressure of Eustachian tube was (23.5-8.3) daPa in expedite status, (79.8+/-16.2) daPa in mild obstruction, (154.1+/-28.7) daPa in serious obstruction and >200 daPa in entire obstruction. The percentage of detection was 50.5% in expedite status, 26.9% in mild obstruction, 11.9% in serious obstruction and 10.7% in entire obstruction, which in expedite status was much higher than that in various types of Eustachian tube obstruction status. However, the incidence of Eustachian tube opening in the cases with duration of 3 month-1 year was significantly lower than that in the cases with other durations. The opening pressure of Eustachian tube in the cases with large perforation of tense part of tympanic membrane was significantly lower than that in the cases with small perforation of tense part of tympanic membrane and perforation of flaccid part of tympanic membrane. Nevertheless, the incidence of Eustachian tube obstruction in the cases with large perforation of tense part of tympanic membrane was significantly lower than that in the cases with small perforation of tense part of tympanic membrane and perforation of flaccid part of tympanic membrane.
The Eustachian tube was expedite in about 1/2 of cases with chronic suppurative otitis media, mild obstruction in about 1/4 quarter of cases, and serious obstruction and entire obstruction in about 1/10 of cases respectively. The Eustachian tube function was related to the duration, type and location of tympanic perforation in chronic suppurative otitis media. It is a simple, invasion-free method to evaluate the Eustachian tube function of chronic suppurative otitis media with impedance audiometry.
通过不同类型、病程及状态的慢性化脓性中耳炎的声导抗测听来评估咽鼓管功能。
采用手动读表及调节气压的声导抗测听法，对368例（402耳）慢性化脓性中耳炎患者的咽鼓管功能进行检测，并对数据进行统计学分析。
咽鼓管通畅状态下平均正压开放压为（23.5 - 8.3）daPa，轻度阻塞为（79.8±16.2）daPa，重度阻塞为（154.1±28.7）daPa，完全阻塞>200 daPa。通畅状态下检测阳性率为50.5%，轻度阻塞为26.9%，重度阻塞为11.9%，完全阻塞为10.7%，通畅状态下的阳性率远高于各种咽鼓管阻塞状态。然而，病程在3个月至1年的患者咽鼓管开放发生率明显低于其他病程患者。鼓膜紧张部大穿孔患者的咽鼓管开放压明显低于鼓膜紧张部小穿孔及鼓膜松弛部穿孔患者。不过，鼓膜紧张部大穿孔患者的咽鼓管阻塞发生率明显低于鼓膜紧张部小穿孔及鼓膜松弛部穿孔患者。
约1/2的慢性化脓性中耳炎患者咽鼓管通畅，约1/4患者为轻度阻塞，约1/10患者分别为重度阻塞和完全阻塞。慢性化脓性中耳炎患者的咽鼓管功能与病程、鼓膜穿孔类型及部位有关。声导抗测听是评估慢性化脓性中耳炎咽鼓管功能的一种简单、无创的方法。
