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Sequential Bilateral Cochlear Implantation In Children | 12427
ISSN: 2161-119X

Otolaryngology: Open Access
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Sequential bilateral cochlear implantation in children

International Conference and Exhibition on Otolaryngology

Henrik Strom-Roum

ScientificTracks Abstracts: Otolaryngology

DOI: 10.4172/2161-119X.S1.002

Studies on children with sequential bilateral implantation has shown that these children may have the possibility to take an advantage of the binaural benefits of normal-hearing individuals. However, reports are limited by concerns about the number of patients and the observation times. In our study we included prelingually deaf children with sequential bilateral cochlear implantation assessed at both 12 and 24 months postoperatively to the second implantation.We evaluated the effect of bilateral versus unilateral cochlear implants and the importance of the inter-implant interval (time between the first and the second implantation) on speech recognition and sound localisation performance. Seventy-three children was tested using monosyllabic words in quiet conditions and 63 children performed the five-speaker sound localisation test. Percent correct word perception, mean angular error (MAE) and correct speaker score (CSS) was calculated The mean bilateral speech recognition 12 and 24 months after the second implantation was significantly higher than that obtained with either the first or the second implant alone. The overall improvement (both 12 and 24 months postoperatively the second implantation) in the MAE with two cochlear implants compared with one cochlear implant was 10.18 %. After 12 months with bilateral CIs, the difference in CSS between listening in a unilateral (mean CSS = 29%) condition and listening in bilateral (mean CSS = 30%) condition was small, however a significant difference was seen after 24 months, mean bilateral CSS 38%. A shorter inter-implant interval was associated with better bilateral speech recognition and sound localising performance.

Dr. Str?m-Roum work as an assistent professor, clinical ENT and research fellow at University of Oslo and Division of Surgery and Clinical Neuroscience Department of Otorhinolaryngology, Oslo University Hospital, Norway. He is a part of the Cochlear Implant Unit and has presented at several international conferences. Special field of interest in Otolaryngology is coch lear implants and Pediatric audiology.