Cochlear Implantation In Children With Large Vestibular Aqueduct Syndrome After Debugging Results Of Clinical Studies

Objectives:The Purpose of this study is to discuss cochlear implantationin children with large vestibular aqueduct syndrome after boot,boot amonth at all levels of electrode impedance,postoperative comfortablechange characteristics of threshold,the threshold.For children withlarge vestibular aqueduct syndrome,Provides the reference for thefeasibility of cochlear implantation at the same time for large vestibularaqueduct syndrome after cochlear tuning machine plan to provide thecorresponding reference indicators.Method:Fifty-five cochlear implant pre lingual deafness patientsparticipated in this study.They received cochlear implant surgery at theage of1to10years old from Nov,2010to Dec,2012.The patients were dividedinto two groups. Group A had35patients with normal inner ear.Group Bhad20patients with radiographically proven large vestibular aqueductsyndrome.All of the patients were inserted with Nucleus24RE cochlearimplant. The application software was NRT3.2version and the hardware wasmade up of computer,IF5card,PCI(Processor control interface) and Nucleusmultiple cochlear implant system.The default parameter values was the ACEspeech coding strategy,MP1+2,pulse width(PW)25,stimulate the900HzRate.The time of the first programming session was approximately4weeks afer surgery.Electrode impedance values can be obtainedautomatically by the system software, the subjective threshold andmaximal comfortable level(T-level and C-level)can be obtained by neuralresponse telemetry.Result：Will boot A,B two groups of electrode impedance and threshold andComforable threshold value of22and11and1electrode,Using the independent samples t Test,the results showed that there was nostatistically significal differences between group A and B at the timeof switch on(P＞0.05). the electrode impedance and T/C-level of22and11and1electrode did not differ significantly between group A and B atthe time of1months after switch on(P＞0.05).The impedance wassignificantly different at the time of switch on,1months after switchon(P＜0.05). T/C-level were not significantly different at the time ofswitch on,1months after switch on(P＞0.05).Conclusion:1.Cochlear implantation of large vestibular aqueduct syndromeExpansion is a kind of effective method.2.Large vestibular aqueductsyndrome develop process machine and relevant parameters of electricalstimulation parameters can be used with inner ear as a result of normalchildren with the same method.3.Cochlear implantation in childrenundergoing boot and boot after a month of adjustment is the key.