畸变产物耳声发射在伪聋鉴定中的应用

目的寻找识别伪聋的客观方法。方法运用畸变产物耳声发射技术(DPOAE)对伪聋组、正常对照组及感音神经性聋组进行畸变产物耳声发射测试。结果(1)正常对照组的平均检出率为94.00％,感音神经性聋组的检出率为22.00％,两组比较有显著性差异(P<0.01),提示感音神经性聋组患者,通过DPOAE检查,可以发现其听功能障碍。(2)伪聋组的平均检出率为93.00％,与正常对照组比较无显著性差异(P>0.01),提示通过DPOAE检查,可以识别伪聋。而且,当听力下降>50dB时,检出率为零,这更表明DPOAE技术对伪聋有识别作用。结论DPOAE作为识别伪聋的客观检查方法可应用于法医临床学活体损伤鉴定。

The study of distortion products otoacoustic emissions in pseudo-anacousia

Objective To explore the technique that distinguish pseudo-anacousia. Methods 60 cases were divided into three groups ( normal group, deafness sensorineura group and pretending hearing loss group). They all had been tested by distortion products otoacoustic emissions technique . Results (1) The DPOAE incidence of normal group is 94.00%. the DPOAE incidence of deafness sensorineura group is 22.00%.There were significant differences at statistics in DPOAE incidence (P<0.01). those proved that patients (deafness sensorineura group ) were in hearing problem . (2) The DPOAE incidence of pretending hearing loss group is 93.00%,there were no significant differences at statistics in DPOAE incidence between normal group and pretending hearing loss group (P>0.01), furthermore when behavior threshold is over 50 dBHL , DPOAE incidence is no score . Conclusion This study shows the technique can distinguish pretending hearing loss . The application of DPOAE can be used as a new tool in cases assessment of clinic forensic medicine.