听觉诱发电位检查在听力下降法医学鉴定中的意义

目的研究听觉诱发电位检查在外伤性听力下降临床法医学鉴定中的意义。方法通过对57例外伤后导致听力损伤的临床法医学鉴定案例进行分析,研究听觉诱发电位检查对临床法医学鉴定听力损伤程度的重要性,从而对听觉诱发电位检查结果和听力下降程度的相关性进行统计学分析。结果听觉诱发电位等客观检查结果与被鉴定人的听力损伤下降程度相符;在听力受损伤后,听觉诱发电位检查结果对比显示被鉴定人的听力损伤有不同程度的恢复;听力损伤程度与造成听力损害的损伤部位有密切关系。结论应用ABR-click和40 Hz AERP-Tone-500 Hz,结合纯音测听、电测听、声导（阻）抗、耳声发射等可以客观公正的对听力障碍进行鉴定,并识别伪聋和明显夸大听力障碍者,在法医学鉴定中有重要意义。

Significance of the Auditory Evoked Potential Test in the Medicolegal Identification of Hearing Loss

Objective To study the significance of the auditory evoked potential test(AEPT)in the medicolegal identification of traumatic hearing loss.Methods 57 cases of traumatic hearing impairment in the clinical medicolegal identification were analyzed so as to study the importance of AEPT in the medicolegal identification of the severity of hearing impairment and conduct the statistical analysis on the correlation between AEPT results and hearing loss degree.Results The results of the objective items of AEPT were coincident with hearing loss degree for the persons to be identified.After hearing impairment,the comparison of AEPT results indicated that the hearing loss for the persons to be identified was recovered to different extents.The hearing loss degree was closely relevant with the injury location of hearing.Conclusion ABR-click and 40 Hz AERP-Tone-500 Hz can objectively and righteously identify hearing impairment in association with pure tone audiometry,electric audiometry,acoustic resistance,otoacoustic emission and others and distinguish feigned deafness and significantly exaggerated hearing impairment.This approach is very significant in medicolegal identification.