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背景:感音神经性聋的脑干听觉诱发电位(brainstemauditoryevokedpotential,BAEP)波型分化差,对感音神经性聋做出进一步诊断较困难,应用疏波短声给声可提高感音性聋的BAEP出波率和改善波形分化。目的:研究应用疏波短声给声刺激提高感音性聋的BAEP出波率和改善波形分化的现象。设计:前后对照试验。地点和对象:实验地点:菏泽医学专科学校。1999/2000年间菏泽市立医院耳鼻喉科接诊的耳聋患者中经临床及纯音测听确定为感音神经性聋患者48例、70耳,年龄90d～42岁,平均10.7岁。干预:检测耳给短声刺激,对侧耳给噪声掩蔽;分别用疏密交替波和疏波短声给声刺激进行BAEP测试,比较两种给声测试的结果。主要观察指标:各波出波率及波形。结果:用疏密交替波短声给声,BAEP各波出波率很低,70耳中出现Ⅰ波16例,出现Ⅱ,Ⅲ,Ⅳ,Ⅴ波各2例,余均呈无反应型。改用单一的疏波短声后,各波出波率明显提高,尤其前3个波更高,70耳中,各波出现例数分别为70,68,52,12和16,各波出现率与前者相比,除Ⅳ波外,其余各波差异均有显著性意义(P<0.05,P<0.01),且波形分化也有改善,最为明显的是Ⅰ波变得更大且呈多峰。结论:应用疏波短声给声有助于BAEP为感音性聋进一步做出定位诊断。
BACKGROUND: The brainstem auditory-bradycardic evoked potential (BAEP) of sensorineural deafness is poorly differentiated and it is difficult to make further diagnosis of sensorineural deafness. The application of sowing short beep to improve the sensitivity of deafness BAEP outbreak and improve waveform differentiation. OBJECTIVE: To study the effect of short-wave of shortening on the acoustic emission of BAEP and improve the waveform differentiation of senile deafness. Design: Control before and after the test. Location and object: Experimental Location: Heze Medical College. In 1999/2000 Heze Municipal Hospital admissions ENT deaf patients by clinical and pure tone audiometry identified as sensorineural hearing loss in 48 patients, 70 ears, aged 90d ~ 42 years, an average of 10.7 years old. Intervention: The test ear was given short-tone stimulation and the side ear was used to mask the noise. The BAEP test was performed on the acoustical stimuli using the alternating short-pitch and short-shorts of the sparse waves respectively, and the results of two kinds of test were compared. MAIN OUTCOME MEASURES: Outgoing wave rate and waveform of each wave. Results: The sound waves of alternating short waves of density and density were given. The wave rates of BAEP were very low. There were 16 cases of Ⅰ wave in 70 ears and 2 cases of Ⅱ, Ⅲ, Ⅳ and Ⅴ waves respectively. All of them showed nonresponsive type. After the switch to a single shortwave sparse wave, the wave out rate increased significantly, especially in the first three waves higher, 70 ears, the wave number of cases were 70,68,52,12 and 16, the wave appeared Compared with the former, the differences were significant (P <0.05, P <0.01), and the waveform differentiation was also improved. The most obvious was that the wave Ⅰ became larger and had multi-peaks . CONCLUSIONS: The use of short-sowing sound waves to help BAEP make a further positional diagnosis of sensorineural hearing loss.