Abstract
Received January 2, 2013 Revised March 21, 2013 Accepted March 21, 2013 Address for correspondence Gi Jung Im, MD Department of OtolaryngologyHead and Neck Surgery, College of Medicine, Korea University, 73 Inchon-ro, Seongbuk-gu, Seoul 136-705, Korea Tel +82-2-920-5345 Fax +82-2-925-5233 E-mail logopas@korea.ac.kr Background and ObjectivesZZThe purpose of the study was to evaluate the changes in electrical stimulation levels, i.e. threshold (T) levels, comfortable (C) levels, dynamic range (DR), and electrode impedance values (EIVs) during the first year in cochlear implant users. Subjects and MethodZZThe maps of 49 cochlear implant users (at least 1 year mapping), using the Nucleus device, were examined at the time of initial connection, and at 6 and 12 months post-initial stimulation. T levels, C levels, DR and EIVs were analyzed according to three frequency levels. ResultsZZDuring the first 6 months of implant use, C levels and DR increased significantly whereas T levels were stable. EIVs of current carrying electrodes decreased significantly from the connection to the 12-month visit. The changes of electrical stimulation levels did not differ among three frequency levels during the entire follow-up. ConclusionZZDuring the first 6 months of implant use, C levels and DR increased significantly. Thus, an appropriate mapping in the first 6 month is critical to setup hearing capacity in implant users. The mapping should be performed under the best communication environment between the audiologist and the patient, and it makes correct setting of T levels from the initial connection period. Korean J Otorhinolaryngol-Head Neck Surg 2013;56:201-5
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Korean Journal of Otorhinolaryngology-Head and Neck Surgery
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.