Download 13th International Conference on Cochlear Implants and Other

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Evaluation effect of retained stylet in rehabilitation: A case report
Imsuwansri T.
, Phaisaltuntiwongs W. , Jarujinda S.
Institute of Medical Research and Technology Assessment, Department of Medical Services, Ministry of Public Health, Nonthaburi,
Thailand, 2National Cancer Institute, Department of Otolaryngology, Bangkok, Thailand, 3Faculty of Medicine, Burapha University,
Department of Otorhinolaryngology, Chonburi, Thailand, 4Sirindhon Hospital, Medical Service Department, Bangkok Metropolitan
Administration, Otorhinolaryngology Section, Bangkok, Thailand, 5Phramongkutklao College of Medicine, Royal Thai Army, Bangkok,
Background: Advance Off-Stylet insertion technique(AOS) was proven to enable more atraumatic insertions of
Contour electrodes with Softip and to provide very reliable perimodiolar placements using internal devise as
CI512 with Contour Advance Electrode.
Case report: A case is described of a Thai adult male of 66 years who developed bilateral profound hearing loss
in last 10 years and no benefit for hearing aid used . The case undergone cochlear implantation in right ear after
cochlear apparatus imaging was done as unremarkable. During operation we found obliteration of the cochlear
due to osteoneogenesis led to limited cochlear implantation. Further, a round window concealed by oval window.
We do insertion by AOS technique normally. When extraction of stylet , stylet was fractured and retained in
cochlear around 7 mm. after cochlear implantation 4 weeks, We started first mapping and rehabilitation
simultaneously evaluation effect of retained stylet in this case.
Conclusion: No adverse effect of retained stylet in rehabilitation was observed after switch on the device, during
mapping and using in daily life. After undergone cochlear implantation for 3months, he able to use telephone for
interactive conversation. Long- term follow- up was done by authors at 6, 12, 18 and 24 months and no
complication can observed.