Clinical Analysis Of Multichannel Cochlear Implant In Twenty-eight Cases

Objective:To investigate the operation of cochlear implant and to study the indications of multichannel cochlear implant methods of operation postoperative mapping of cochlear speech processor audition and speech or language skills rehabilitation as well as the clinical effects after collecting and analyzing the clinical datum about severe or profound sensorineural deaf patients who were implanted multichannel cochlear prothesis. Methods : There were 19 severe or profound sensorineural deaf patients (13 males and 6 females) with ages from 1 to 23 years old. Among these patients 10 cases were prelingually deaf and 9 cases were postlingually deaf .The cause of deafness was drug–poisoning in 4 cases, noise exposure in 1,underfined in 14.All patients were implanted multichannel cochlear MED-EL Combi40+ through facial nerve recess approach. The patients were assessed in medicine audioloy and aural image before the operations. Mapping of cochlear speech processor was done 1 month postoperatively.8 prelingually deaf patients had experienced audition and speech or language skills habilitation training for 3-19 months .After following up these patients once per 3-6 months ,.the clinical materials or datum from them were analysed. Results: 19 patients were implanted successfully and no complications occurred intraoperatively and postoperatively .Mapping of cochlear speech processor was done 1 months postoperatively and all of 19 patients obtained the hearing .The postlingually deaf patient could dialog and communicate with telephone after language training .This patient achieved the best result ,and them not only stepped into sound world but also obtained a normal living and study .The prelingually deaf patients also assessment. The curative effects of the younger prelingally deaf patients are better than that of the older. Conclusion:The operation of the cochlear implant through facial nerve recess approach is a routine treatment to severe or profound sensorneural deaf patients, mainly including postlingual deaf adults ,prelingual deaf children and part of youngsters. Preoperative assessment in medicine, audioloy and aural image are important to the operation of cochlear implant. As well as mapping and adjustments of cochlear speech processor and systematic audition and speech skills rehabilitation training can ensure the operation of cochlear implant successfully.