Impact of Electric Stimulation on Residual Hearing

Journal of the American Academy of Audiology
Margaret T DillonHarold C Pillsbury

Abstract

Candidacy criteria for cochlear implantation are expanding to include patients with substantial low-to-mid frequency hearing sensitivity. Postoperative hearing preservation has been achieved in cochlear implant recipients, though with variable outcomes. Previous investigations on postoperative hearing preservation outcomes have evaluated intraoperative procedures. There has been limited review as to whether electric stimulation influences hearing preservation. The purpose of this analysis was to evaluate whether charge levels associated with electric stimulation influence postoperative hearing preservation within the first year of listening experience. Retrospective analysis of unaided residual hearing and charge levels. Twenty-eight cochlear implant recipients with postoperative residual hearing in the operative ear and at least 12 mo of listening experience with electric-acoustic stimulation (EAS). Assessment intervals included initial cochlear implant activation, initial EAS activation, and 3-, 6-, and 12-mo postinitial EAS activation. A masked low-frequency bone-conduction (BC) pure-tone average (PTA) was calculated for all participants at each assessment interval. Charge levels for each electrode were determined using the ...Continue Reading

Citations

Dec 6, 2016·Acta Oto-laryngologica·Adrien A EshraghiSandra Valendia
May 26, 2017·The Laryngoscope·Bruce J GantzMarlan R Hansen

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