OBJECTIVE: In cochlear implantation, there are two crucial factors promoting hearing preservation: an atraumatic surgical approach and selection of an electrode that does not damage cochlear structures. This study aimed to evaluate hearing preservation in children implanted with the Nucleus Slim Straight (CI422) electrode. METHODS: Nineteen children aged 6-18 years, with partial deafness, were implanted using the 6-step Skarzynski procedure. Electrode insertion depth was 20-25 mm. Hearing status was assessed with pure tone audiometry before surgery, and at 1, 5, 9, 12 and 24 months after surgery. Electrode placement was confirmed with computed tomography. RESULTS: Mean hearing preservation in the study group at activation of the cochlear implant was 73 per cent (standard deviation = 37 per cent). After 24 months, it was 67 per cent (standard deviation = 45 per cent). On a categorical scale, hearing preservation was possible in 100 per cent of cases. CONCLUSION: Hearing preservation in children implanted with the Nucleus CI422 slim, straight electrode is possible even with 25 mm insertion depth, although the recommended insertion depth is 20 mm. A round window approach using a soft, straight electrode is most conducive to hearing preservation.
OBJECTIVE: In cochlear implantation, there are two crucial factors promoting hearing preservation: an atraumatic surgical approach and selection of an electrode that does not damage cochlear structures. This study aimed to evaluate hearing preservation in children implanted with the Nucleus Slim Straight (CI422) electrode. METHODS: Nineteen children aged 6-18 years, with partial deafness, were implanted using the 6-step Skarzynski procedure. Electrode insertion depth was 20-25 mm. Hearing status was assessed with pure tone audiometry before surgery, and at 1, 5, 9, 12 and 24 months after surgery. Electrode placement was confirmed with computed tomography. RESULTS: Mean hearing preservation in the study group at activation of the cochlear implant was 73 per cent (standard deviation = 37 per cent). After 24 months, it was 67 per cent (standard deviation = 45 per cent). On a categorical scale, hearing preservation was possible in 100 per cent of cases. CONCLUSION: Hearing preservation in children implanted with the Nucleus CI422 slim, straight electrode is possible even with 25 mm insertion depth, although the recommended insertion depth is 20 mm. A round window approach using a soft, straight electrode is most conducive to hearing preservation.
Entities:
Keywords:
Acoustic Stimulation; Cochlear Implant; Electric Stimulation
Authors: Konrad Johannes Stuermer; David Schwarz; Andreas Anagiotos; Ruth Lang-Roth; Karl-Bernd Hüttenbrink; Jan Christoffer Luers Journal: Eur Arch Otorhinolaryngol Date: 2018-02-07 Impact factor: 2.503
Authors: Brendan P O'Connell; Jourdan T Holder; Robert T Dwyer; René H Gifford; Jack H Noble; Marc L Bennett; Alejandro Rivas; George B Wanna; David S Haynes; Robert F Labadie Journal: Front Neurosci Date: 2017-05-29 Impact factor: 4.677
Authors: Magdalena Beata Skarżyńska; Piotr Henryk Skarżyński; Bartłomiej Król; Magdalena Kozieł; Kamila Osińska; Elżbieta Gos; Henryk Skarżyński Journal: Med Sci Monit Date: 2018-04-22
Authors: Agnieszka Pollak; Urszula Lechowicz; Anna Kędra; Piotr Stawiński; Małgorzata Rydzanicz; Mariusz Furmanek; Małgorzata Brzozowska; Maciej Mrówka; Henryk Skarżyński; Piotr H Skarżyński; Monika Ołdak; Rafał Płoski Journal: PLoS One Date: 2016-12-12 Impact factor: 3.240
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