Analysis of Cases with Misplaced Electrodes in Cochlear Implantation
WANG Qimei
GONG Shusheng
WANG Wei
WANG Line
Abstract：Objective To report causes for electrode misplacement and methods of reimplantation in cochlear implantation.Methods Cases of cochlear re-implantation in our department due to cochlear electrode misplacement from 2015 to 2022(n=4)were identified,and the causes of electrode misplacement and re-implantation methods were reported.Results Electrode misplacement was revealed at postoperative examination in 1 case and at startup due to poor responses to sounds in 3 cases.Electrodes were implanted into the superior semicircular canal in 2 cases,into the eustachian tube in 1 case,and into the internal auditory canal in 1 case.Ipsilateral re-implantation was successfully in all 4 cases.Conclusion Electrode misplacement is a rare complication in cochlear implantation.The ectopic implanted electrode may respond to intraoperative nerve test,confusing surgeon's judgment of electrode implantation location.Therefore,careful preoperative imaging review,standardized surgical procedures,timely neural response testing,and routine postoperative examinations are crucial for avoiding ectopic electrodes implantation.
Keywords：cochlear implantationelectrode misplacementreimplantation
Publication Date：2024-10-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 775-779 )