摘要
目的旨在探讨一侧急性前庭损伤后眼震电图(ENG)各检测结果在前庭功能损伤、代偿、恢复不同阶段的变化特征及相互关系。方法对61例前庭神经元炎患者进行了冷热水试验、阻尼摆动(DTST)、摇头眼震(HSN)、视动眼震(OKN)和自发性眼震(SN)检查,并对其中2例进行了ENG动态观测。结果认为在一侧急性前庭损伤的早期,功能代偿未建立,ENG各项结果能够正确指示前庭损伤侧别,表现为患侧冷热反应减退或消失,出现指向健侧的SN和减退型HSN、DTST和OKN向患侧方向的眼震减弱,在后期(2周以后)SN转向患侧,DTST转变为向健侧方向的眼震减弱,HSN变为恢复或双相型,这些改变可以作为前庭功能恢复的标志,此时冷热水试验也可恢复正常。结论综合分析ENG各项结果特征,不仅能判断前庭损伤侧别。
ObjectiveTostudythecharacteristicchangesandrelationsofelectronys-tagmograms(ENG)atdifferentstagesoffunctionaldamage,compensationandrecoveryinpatientssuf-feredfromunilateralacutevestibularneuronitis.MethodsENGofvarioustestsweretakenin61pa-tientswithvestibularneuronitis,andserialENGfolow-upformorethan30daysin2cases.ResultsAttheearlystage(within10days)ofacutevestibulardisease,compensationhadnotestablishedyet,ENGresultscouldcorrectlyindicatethelesionside:ENGofcalorictestwasatenuatedordisappearedonthelesionside.Spontaneousnystagmus(SN)anddeminishedheadshakingnystagmuspointedtothenormalside,whiledeminishednystagmustothelesionsidewasfoundindamptedtorsionswingtest(DTST)andoptokineticnystagmus(OKN).Atlaterstage(2weeksafteronsetofdisease),SNturnedtopointthelesionside,deminishedDTSTtothenormalside,andnormalresultofcalorictestcouldbeelicited.ConclusionENGnotonlycanindicatethesideofvestibularlesion,butalsomoni-torsitsdevelopmentandrecovery.