摘要
为了探讨内侧橄榄耳蜗系统（ＭＯＣ）功能与蜗后病变的关系，以对侧白噪声对诱发性耳声发射的抑制效应为指标，测试感音神经性聋、听觉过敏、神经性耳鸣患者的ＭＯＣ功能。结果发现：１６例感音神经性听力减退中９例ＭＯＣ功能障碍，其中８例为低频听力下降；１５例耳鸣中６例ＭＯＣ功能障碍；２例听觉过敏均有ＭＯＣ功能障碍。可见蜗后病变的感音神经性聋可同时伴有ＭＯＣ功能障碍，听觉过敏及部分耳鸣的病理机制可能与ＭＯＣ功能障碍有关。测试ＭＯＣ功能对于听觉系统疾患的定位诊断有独特的临床意义。
Thefunctionofmedialolivocochlearsystem(MOC)inpatientswiththreekindsofauditorydiseaseswastestedinordertoinvestigatetherelationshipbetweenMOCandretrocochlearimpairment.Suppressiveefectofevokedotoacousticemissions(OAEs)bycontralateralwhitenoisewasusedastheindicatortoevaluatethefunctionofMOCinpatientswith:(1)sensorineuraldeaf-nesswithdefiniteotoacousticemissions,(2)hyperacusisand(3)tinnitus.DysfunctionofMOCwasfoundinninecasesoutofsixteenpatientswithsensorineuraldeafnessandsixcasesoutoffifteenpatientswithtinnitus.TwocasesofhyperacusisalsoshowedMOCdysfunction.ItwasconcludedthatMOCdysfunctionmayexistinsomepatientswithsensorineuralhearinglossandtinnitus,andinpatientswithhyperacusisaswel.ItseemedlikelythatdysfunctionofMOCmayplayedaroleincausingtinnitusandhyperacusisinthesepatients.TestingthefunctionofMOCmayprovideahelp-fulwayfordiferentialdiagnosisofcochlearandretrocochlearimpairmentinauditorysystem.
出处
《中华耳鼻咽喉科杂志》
CSCD
1996年第2期78-81,共4页
Chinese Journal of Otorhinolaryngology
关键词
耳蜗
耳鸣
听力检查
MOC功能
CochleaEferentpathwaysHearingloss,sensorineuralTinnitusHearingtest
