畸变产物耳声发射在伪聋和夸大性聋检测中的应用

目的：探讨畸变产物耳声发射（DPOAE）对伪聋和夸大性聋的鉴别诊断作用。方法：采用ILO 96耳动态分析仪对外伤后诉听力下降，而又不配合纯音听阈（PTT）检测的患者进行DPOAE检测与分析。结果：经PTT检测的129例（150耳）外伤性听力下降患者中，有102例（121耳），作DPOAE检测结果显示伪聋占66．12％（80／121），夸大性聋占33．88％（41／121）。经ABR检测反应阈值，证实DPOAE检测结果客观、可靠。结论：DPOAE作为外伤后听力损失鉴别诊断的常规检测方法，可对伪聋和夸大性聋作出客观、可靠的诊断和鉴别诊断。

Application of distortion product otoacoustic emissions in detection of pseudohypacusis and exaggerated hearing loss

Objective:To explore the role of differential diagnosis of distortion product otoacoustic emissions((DPOAE)) in pseudohypacusis and exaggerated hearing loss.Method:Detection and analysis of DPOAE were made by ILO96 Otodynamic Analyzer in the patients complaininged of post-traumatic hearing loss and incooperative in pure tone threshold(PTT) examination.Result:The detective results of DPOAE in 102 patients(121 ears) incooperative in PTT examination revealed that pseudohypacusis was 66.12%(80/121 ears),exaggerated hearing loss was 33.88%(41/121 ears).The reactive threshold value determined by auditory brainstem response(ABR) in these patients confirmed that the results of DPOAE were objective and reliable.Conclusion:DPOAE can be used as a routine examination method in differential diagnosis of the post-traumatic hearing loss.It gives an objective and reliable diagnosis and differential diagnosis for the pseudohypacusis and exaggerated hearing loss.