耳聋基因携带者的纯音测听

为了解耳聋基因携带者的听力情况，对１５名确诊为遗传性神经性聋儿的１４对父母和２名亲属进行纯音测听检查。挑选１０名听力正常儿的１０对父母和５名因患病毒性脑炎、乙脑，外伤所致神经性聋儿的５对父母作对照。使用美国产ＧＳＩ一１６多功能听力计，在本底躁声＜３ＯｄＢ的隔音室内进行纯音测试。结果显示：对照组气、骨导测试均在正常范围，试验组中只有１对夫妇纯音测听在正常范围，其余１３对夫妇和２名亲属分别有双耳或单耳在１～４ＫＨｚ处有平均１５～２５ｄＢ的听力损失，认为纯音测听对耳聋基因携带者的检出有一定的作用。

0. PURE TONE TEST FOR DEAFNESSGENE CARRIERS

o know the heaning of deafness genecarricrs, a pure tone test was given to 14couples and two family niembers of 15hereditary nervous deaf niute children.We conipared 10 couples whose children hadnormal hearing with 5 couples whose chil-dren had viral encephalitis, encephalitis Band nervous deafness caused by trauma.Using GSI 16 multifunctional audiometermade in U. S. A, they received pure tonetest in a sound proof room with back-ground noise < 30dB. The result showedthat air-conduction and osseosonometry ofcontrol group were normal, but only onecouple in test group`had normal pure tone,the other 13 couples and 2 family membershad monotic or biauricular hearing demagetaverage 15- 25dB) in 1-4 kHz. It sug-gested that pure tone test had offect in de-terming deafness gene carriers.