Profiles of AEVs for intra- and post-operative integrity test measurements in young children with the Nucleus mini 22 cochlear implant

British Journal of Audiology
J GarnhamS M Mason

Abstract

Cochlear implantation of young children (<5 years of age) places additional demands on the implant team when compared to older children and adults. For these young children, it is essential to have integrity testing (IT) available to objectively assess the function of the internal device. Unfortunately, very few publications are available which document normal working ranges for IT. Thus the aim of the present study was to establish intra- and post-operative normal ranges for the averaged electrode voltage (AEV) which can be used in the clinical environment to assist in child management. As part of the routine protocol in Nottingham, IT was performed intra-operatively and 2 or 5 years post-operatively in common ground (CG) and pseudo-monopolar 1 (MP1) modes of stimulation on 30 children. All the children were implanted with the Nucleus mini 22 device. Normal ranges were calculated (mean +/- 1 standard deviation (SD)) for both intra- and post-operative measurements. In addition, the post-operative percentage changes in AEV amplitude were calculated for the 2-year and 5-year data groups. Data were excluded from calculations if an electrode was known or suspected to be faulty by visual examination of the AEV profile by an experien...Continue Reading

References

Oct 1, 1992·Journal of Speech and Hearing Research·M F DormanJ L Parkin
Jun 1, 1995·The Journal of Laryngology and Otology·D M ThomasS Rakkar-Thomas
Jan 1, 1994·European Archives of Oto-rhino-laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery·R D BattmerT Lenarz
Aug 1, 1994·Ear and Hearing·L H MensP van den Broek
Aug 1, 1997·British Journal of Audiology·H E Cullington, G P Clarke

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