| Objective:To explore the clinical advantages of underwater technology in cochlear implantation by comparing the postoperative effects of electrode implantation with non-underwater technology in cochlear implantation.Methods: A retrospective analysis of patients with artificial cochlear implantation.According to the different methods of cochlear implant,they were divided into non-underwater cochlear implant group(Group A)and underwater cochlear implant group(Group B).The mean value of overall electrode impedance and the changes of electrode impedance values in different regions with time were compared between the two groups during operation,3 days after operation,1 month after operation,3 months after operation and 12 months after operation.The scores of categories of auditory performance(CAP)and speech intelligibility rating(SIR)before operation(within 3days before operation)and 12 months after operation were compared and statistically analyzed.Results: 1)The overall variation trend of the mean electrode impedance of the two groups was the same,which was the lowest in the intraoperative period.There was no statistical difference between the three days after the operation and the intraoperative period,and it rose to the highest one month after the operation.There was no statistical difference between the 12 months after the operation and 3 months after the operation.2)The mean total electrode impedance of the children in group B was lower than that of group A during surgery,1 month after surgery,3 months after surgery,and 12 months after surgery,with statistically significant differences(P < 0.05).3)In the low frequency area at the top of the cochlea,the electrode impedance values of the children in group B were lower than those in group A during surgery,3 days after surgery,1 month after surgery,3 months after surgery and 12 months after surgery(P < 0.05).In the intermediate frequency region of the cochlea,the electrode impedance of group B was lower than that of group A only one month after surgery,and the difference was statistically significant(P < 0.05).In the high frequency area at the bottom of cochlea,there was no significant difference in electrode impedance values between the two groups during surgery,3 days after surgery,1 month after surgery,3 months after surgery,and 12 months after surgery(P > 0.05).4)there was no significant difference between CAP score and SIR score between the two groups 12 months after surgery(P >0.05).Conclusion: The use of underwater electrode implantation in cochlear implantation can effectively improve the fibrosis of the surrounding tissues and reduce the intraoperative and postoperative electrode impedance,with the most significant decrease in the low-frequency region at the top of the cochlea.However,the effect of this technique on the hearing and speech ability of children 12 months after the operation is still unclear.Cochlear implant electrode current underwater technology has become a more mature mode of operation,compared to not underwater for cochlear implant electrode can improve the efficiency of intraoperative dosage,better protection of the inner ear structure,there are quite a number of research evidence suggests that the local use of hormone for cochlear patients reduce postoperative electrode impedance has a clear advantage,It can provide clinical ideas for electrode implantation in minimally invasive surgery. |
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