本文關(guān)鍵詞： 大前庭水管綜合征 氣骨導(dǎo)差 短潛伏期負(fù)反應(yīng)波　出處：《聽力學(xué)及言語疾病雜志》2014年05期 　論文類型：期刊論文

【摘要】：目的探討大前庭水管綜合征(large vestibular aqueduct syndrome,LVAS)患者的聽力學(xué)特點。方法對185例(370耳)LVAS患者進(jìn)行純音測聽及聲導(dǎo)抗、ABR、DPOAE、顳骨高分辨CT、頭顱MRI檢查,分析其特點。結(jié)果 183例(366耳)患者CT檢查均提示雙側(cè)前庭水管擴(kuò)大,2例(2耳)提示單側(cè)前庭水管擴(kuò)大;120例(240耳)行MRI檢查,238耳均提示內(nèi)淋巴囊擴(kuò)大;112例(224耳)行純音聽閾測試,1例(1耳)聽力正常,28例(55耳)為感音神經(jīng)性聾,85例(168耳)呈混合性聾,其中152耳鼓室導(dǎo)抗圖為A型的混合性聾患者,其低頻氣骨導(dǎo)差較大,中高頻氣骨導(dǎo)差較小;105例(210耳)行聲導(dǎo)抗檢測顯示鼓室導(dǎo)抗圖為A型192耳(其中低頻引出聲反射7耳),As型1耳,Ad型1耳,B型7耳,C型9耳;176例(352耳)行ABR檢測,出現(xiàn)聲誘發(fā)短潛伏期負(fù)反應(yīng)波(acoustically evoked short latency negative response,ASNR)89例(124耳),占50.6%(89/176),ASNR平均波潛伏期在95dB SPL刺激聲強(qiáng)時為3.04±0.29ms,在90dB SPL時為3.12±0.28ms;185例(370耳)DPOAE均未引出。結(jié)論 LVAS患者在中耳功能正常時其純音聽閾顯示低頻氣骨導(dǎo)差較大、中高頻氣骨導(dǎo)差較小的混合性聾,ABR測試可引出特征性的ASNR。
[Abstract]:Objective to investigate the audiological characteristics of large vestibular aqueduct syndrome (LVASS) patients with large vestibular aqueduct syndrome. Methods 185 patients with large vestibular aqueduct syndrome were examined by pure tone audiometry, ABRV DPOAE, high resolution CTs of temporal bone and head MRI. Results CT examination of 183 patients with dilatation of vestibular aqueduct (2 patients with dilatation of vestibular aqueduct in 2 ears) and unilateral vestibular aqueduct dilatation in 120 patients with dilatation of vestibular aqueduct (n = 240). MRI examination showed enlargement of endolymphatic sac in 112 patients (n = 224). A pure tone hearing threshold test was performed in 1 case (n = 1) hearing normal (n = 28, n = 55) being sensorineural deafness (n = 85, n = 168)) mixed deafness. In 152 cases of mixed deafness with type A tympanic ventricular impedance, the low frequency air-bone conductance difference was larger. The acoustic impedance test showed that the tympanogram was A type in 192 ears (including 7 ears of low frequency evolutive acoustic reflex 7 ears of ad type 1 ear of ad type 1 ear of B type 7 ears of 7 ears of type C and 9 cases of 352 ears of type C). There were 89 cases of evoked short latency negative responseus ASNRV with acoustically evoked short latency, accounting for 50.6% 89 / 176% ASNRN, which was 3.04 鹵0.29 msat 95 dB SPL stimulation intensity and 3.12 鹵0.28 Ms DPOAE at 90 dB SPL. Conclusion in LVAS patients with normal middle ear function, the average latency is 3.04 鹵0.29 ms. conclusion the median ear function of LVAS patients is normal. Its pure tone hearing threshold shows that the low frequency air-bone conductance difference is great. The ABR test of mixed deafness with low air-bone conductance in middle and high frequency can lead to characteristic ASNRs.
【作者單位】： 安徽省立醫(yī)院耳鼻咽喉頭頸外科;
【分類號】：R764.43

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本文編號：1533137