A Retrospective Study of Cochlear Re-Implantations - Experience from a Large Centre in India

Özet

Objective: Cochlear re-implantation (CRI) is becoming increasingly common throughout the world.However, studies regarding CRI incidence and etiology are lacking from developing countries like ours.The aim of this study was to present the Indian experience with CRI based on our experience. Objectiveswere to determine the incidence and the indicationsof CRI and the cumulative survival rate (CSR) of cochlear implantation (CI).Methods: Our study was a retrospective one, conducted at a tertiary care centre in southern India.1,500 consecutive cochlear implanted ears from 1997to 2016 were studied. All patients who underwentCRI during this period were included in the study.Results: There were a total of 53 ears (31 male and 22female ears) who underwent CRI. This gives an incidence of 3.53%. The most common indication of CRIwas device failure in 39 ears contributing to 73.6%of the total CRI. The overall CSR of CI in pediatricpopulation was 96.5% over a 20-year period.Conclusion: The CRI incidence and etiology at ourcentre appears to reflect the findings of the literature.Cochlear implant centres across the world should report the CSR of devices used at their respective centres so that it can be made an important criterion inchoice of implant.