纯音听阈法与Jahrsdoerfer评分法对先天性中外耳畸形评估作用的比较

A Comparison between Pure Tone Hearing Thresholds and Jahrsdoerfer Scores in Evaluation of Congenital Deformation of Middle and Outer Ears

目的比较纯音听阈法与Jahrsdoerfer评分法对先天性中外耳畸形的评估作用。方法将53例(53耳)行外耳道再造+鼓室探查成形手术的先天性中外耳畸形患者分有、无卵圆窗发育两组,对比其术前在0.5-4k Hz各频率平均纯音听阈(或条件反射测听阈值)、Jahrsdoerfer评分及相应平均纯音听阈情况,比较两种方法的差异。结果两组术前平均气导听阈卵圆窗发育组为64.7 d B,无发育组为73.1 d B(P<0.05),且在1k Hz、2k Hz、4k Hz两组有差异(P<0.05)。Jahrsdoerfer评分卵圆窗未发育组7分以下(含)占83.3%,而发育组为35.7%,但评分高低与平均听阈值间无程度梯度关系。结论:纯音听阈法和Jahrsdoerfer评分法均能反映先天性中外耳畸形的畸形程度,但纯音听阈法更简单、直接。Jahrsdoerfer评分高低与纯音听阈水平不能互相进行评估。

Objective To compare the difference between pure tone hearing threshold(PTHH)and Jahrsdoerfer score in evaluating the development of congenital deformation of middle and outer ears.Method 53 cases(53ears)undertaken exploratory tympanoplasty with congenital deformation of middle and outer ears were divided into two groups with and without oval window,comparing the PTHH at 0.5-4 kHz and the Jahrsdoerfer score and the corresponding PTHH before operation between the two groups.Results The mean air conduction threshold for the group with oval window was 64.7 dB and 73.1 dB for the other group(P<0.05),and the difference was found in the 1 kHz,2kHz and 4kHz between two groups(P<0.05).it accounted for 83.3%Jahrsdoerfer score below 7 points for the group without oval window,while 35.7%for the other group,but there was no gradient relationship between Jahrsdoerfer score and the mean PTHH.Conclution Both PTHH and Jahrsdoerfer score can show the deformity degree of congenital deformation of middle and outer ears.But PTHH is simpler and direct.Jahrsdoerfer score and PTHH can not be evaluated mutually.