CONCLUSION: Residual hearing could be preserved with various arrays ranging from 16 to 18 mm in insertion length and 0.25 to 0.5 mm tip diameter. Whether array insertion is performed through a cochleostomy or a round window, tip diameter is an essential criterion for the array design to improve hearing preservation results. OBJECTIVES: The goal of this study was to report the outcome of patients implanted with electric acoustic cochlear implants with various surgical techniques and array designs. METHODS: Thirty-two implanted ears (30 patients) were included in this retrospective study. Three array models were inserted: Contour Advance implant (n = 16), Nucleus Hybrid-L (n = 12), and Med-El Flex EAS (n = 4). Postoperative pure tone audiometry was performed at 3 and 12 months after implantation. RESULTS: Three months postoperatively, hearing preservation within 30 dB was achieved in 50%, 50%, and 84% cases of patients implanted with a Contour Advance, Flex-EAS, and Hybrid-L, respectively. Two patients (Hybrid-L group) had a delayed sudden hearing loss (> 30 dB) 3 months postoperatively and three patients (Contour Advance group) had total hearing loss at 1 year. Best results were achieved using arrays with small tip diameters. Cochleostomy or round window insertion did not affect hearing preservation results.
CONCLUSION: Residual hearing could be preserved with various arrays ranging from 16 to 18 mm in insertion length and 0.25 to 0.5 mm tip diameter. Whether array insertion is performed through a cochleostomy or a round window, tip diameter is an essential criterion for the array design to improve hearing preservation results. OBJECTIVES: The goal of this study was to report the outcome of patients implanted with electric acoustic cochlear implants with various surgical techniques and array designs. METHODS: Thirty-two implanted ears (30 patients) were included in this retrospective study. Three array models were inserted: Contour Advance implant (n = 16), Nucleus Hybrid-L (n = 12), and Med-El Flex EAS (n = 4). Postoperative pure tone audiometry was performed at 3 and 12 months after implantation. RESULTS: Three months postoperatively, hearing preservation within 30 dB was achieved in 50%, 50%, and 84% cases of patients implanted with a Contour Advance, Flex-EAS, and Hybrid-L, respectively. Two patients (Hybrid-L group) had a delayed sudden hearing loss (> 30 dB) 3 months postoperatively and three patients (Contour Advance group) had total hearing loss at 1 year. Best results were achieved using arrays with small tip diameters. Cochleostomy or round window insertion did not affect hearing preservation results.
Authors: William J Riggs; Robert T Dwyer; Jourdan T Holder; Jameson K Mattingly; Amanda Ortmann; Jack H Noble; Benoit M Dawant; Carla V Valenzuela; Brendan P O'Connell; Michael S Harris; Leonid M Litvak; Kanthaiah Koka; Craig A Buchman; Robert F Labadie; Oliver F Adunka Journal: Otol Neurotol Date: 2019-06 Impact factor: 2.311
Authors: Ricardo Ferreira Bento; Fabiana Danieli; Ana Tereza de Matos Magalhães; Dan Gnansia; Michel Hoen Journal: Int Arch Otorhinolaryngol Date: 2016-02-16
Authors: P Bhatti; J Van Beek-King; A Sharpe; J Crawford; S Tridandapani; B McKinnon; D Blake Journal: Biomed Res Int Date: 2015-07-05 Impact factor: 3.411