OBJECTIVE: To describe outcomes from cochlear implantation with a new, slim modiolar electrode array. STUDY DESIGN: Retrospective cohort study. SETTING: Tertiary referral centers. PATIENTS: Adult cochlear implant candidates. INTERVENTIONS: Cochlear implantation with CI532 (Cochlear Corp). MAIN OUTCOME MEASURES: Pre- and postoperative speech perception scores, operative details, and postoperative computed tomography (CT) reconstructions of array location. RESULTS: One hundred seventeen patients are implanted to date. There were eight tip rollovers identified with intraoperative x-ray and resolved with reinsertion. An additional rollover was identified on postoperative CT. CT reconstructions in 17 of 23 patients showed complete scala tympani placement with a wrap factor of 58% (range 53-64%) and a mean insertion angle of 406 degrees (range 360-452 degrees). Three implants demonstrated array translocation with electrodes in the scala vestibuli. Consonant-nucleus-consonant word scores improved from 10% preoperatively to 48% at 3 months postoperatively. Pure-tone thresholds were preserved postoperatively in 37 to 52% of patients across frequencies from 250 to 4000 Hz. Functional pure-tone thresholds (≤80 dB) were recorded in 9 to 25% of patients. CONCLUSION: CI532 array insertion results in consistent scala tympani location and provides expected audiologic performance. Initial hearing preservation results are not consistent with current electro-acoustic arrays.
OBJECTIVE: To describe outcomes from cochlear implantation with a new, slim modiolar electrode array. STUDY DESIGN: Retrospective cohort study. SETTING: Tertiary referral centers. PATIENTS: Adult cochlear implant candidates. INTERVENTIONS: Cochlear implantation with CI532 (Cochlear Corp). MAIN OUTCOME MEASURES: Pre- and postoperative speech perception scores, operative details, and postoperative computed tomography (CT) reconstructions of array location. RESULTS: One hundred seventeen patients are implanted to date. There were eight tip rollovers identified with intraoperative x-ray and resolved with reinsertion. An additional rollover was identified on postoperative CT. CT reconstructions in 17 of 23 patients showed complete scala tympani placement with a wrap factor of 58% (range 53-64%) and a mean insertion angle of 406 degrees (range 360-452 degrees). Three implants demonstrated array translocation with electrodes in the scala vestibuli. Consonant-nucleus-consonant word scores improved from 10% preoperatively to 48% at 3 months postoperatively. Pure-tone thresholds were preserved postoperatively in 37 to 52% of patients across frequencies from 250 to 4000 Hz. Functional pure-tone thresholds (≤80 dB) were recorded in 9 to 25% of patients. CONCLUSION: CI532 array insertion results in consistent scala tympani location and provides expected audiologic performance. Initial hearing preservation results are not consistent with current electro-acoustic arrays.
Authors: Lorenz Hehn; Regine Gradl; Andrej Voss; Benedikt Günther; Martin Dierolf; Christoph Jud; Konstantin Willer; Sebastian Allner; Jörg U Hammel; Roland Hessler; Kaye S Morgan; Julia Herzen; Werner Hemmert; Franz Pfeiffer Journal: Biomed Opt Express Date: 2018-10-10 Impact factor: 3.732
Authors: P Mittmann; G Lauer; A Ernst; S Mutze; F Hassepass; S Arndt; D Arweiler-Harbeck; F Christov Journal: Eur Arch Otorhinolaryngol Date: 2019-09-24 Impact factor: 2.503
Authors: Manuel Christoph Ketterer; A Aschendorff; S Arndt; I Speck; A K Rauch; R Beck; F Hassepass Journal: Eur Arch Otorhinolaryngol Date: 2020-10-22 Impact factor: 2.503
Authors: A Perenyi; F Toth; B Dimak; R Nagy; P Schoerg; J Jori; J G Kiss; G Sprinzl; M Csanady; L Rovo Journal: J Otolaryngol Head Neck Surg Date: 2019-09-06
Authors: Matthias Hey; Nicole Neben; Timo Stöver; Uwe Baumann; Alexander Mewes; Tim Liebscher; Mark Schüssler; Antje Aschendorff; Thomas Wesarg; Andreas Büchner; Paula Greenham; Ulrich Hoppe Journal: Eur Arch Otorhinolaryngol Date: 2020-03-05 Impact factor: 2.503