The advantages of sound localization and speech perception of bilateral electric acoustic stimulation

Abstract Conclusion: Bilateral electric acoustic stimulation (EAS) effectively improved speech perception in noise and sound localization in patients with high-frequency hearing loss. Objective: To evaluate bilateral EAS efficacy of sound localization detection and speech perception in noise in two cases of high-frequency hearing loss. Methods: Two female patients, aged 38 and 45 years, respectively, received bilateral EAS sequentially. Pure-tone audiometry was performed preoperatively and postoperatively to evaluate the hearing preservation in the lower frequencies. Speech perception outcomes in quiet and noise and sound localization were assessed with unilateral and bilateral EAS. Results: Residual hearing in the lower frequencies was well preserved after insertion of a FLEX24 electrode (24 mm) using the round window approach. After bilateral EAS, speech perception improved in quiet and even more so in noise. In addition, the sound localization ability of both cases with bilateral EAS improved remarkably.

[1]  Uwe Baumann,et al.  A new electrode for residual hearing preservation in cochlear implantation: first clinical results , 2009, Acta oto-laryngologica.

[2]  Y. Naito,et al.  Hearing preservation and clinical outcome of 32 consecutive electric acoustic stimulation (EAS) surgeries , 2014, Acta oto-laryngologica.

[3]  D. Basta,et al.  Vestibular and taste disorders after bilateral cochlear implantation , 2010, European Archives of Oto-Rhino-Laryngology.

[4]  Katrien Vermeire,et al.  Bilateral electric acoustic stimulation: a comparison of partial and deep cochlear electrode insertion. A longitudinal case study. , 2010, Advances in oto-rhino-laryngology.

[5]  C. Jolly,et al.  Achievement of hearing preservation in the presence of an electrode covering the residual hearing region , 2011, Acta Oto-Laryngologica.

[6]  Anna Piotrowska,et al.  Preservation of low frequency hearing in partial deafness cochlear implantation (PDCI) using the round window surgical approach , 2007, Acta oto-laryngologica.

[7]  W. Dreschler,et al.  The Effectiveness of Bilateral Cochlear Implants for Severe-to-Profound Deafness in Adults: A Systematic Review , 2010, Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology.

[8]  Michael F Dorman,et al.  Combining acoustic and electric stimulation in the service of speech recognition , 2010, International journal of audiology.

[9]  R. Scholten,et al.  The Effectiveness of Bilateral Cochlear Implants for Severe-to-Profound Deafness in Children: A Systematic Review , 2010, Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology.

[10]  A. Lorens,et al.  Outcomes of Treatment of Partial Deafness With Cochlear Implantation: A DUET Study , 2008, The Laryngoscope.

[11]  Ilona Anderson,et al.  Combined electric acoustic stimulation with the PULSARCI100 implant system using the FLEXEAS electrode array , 2011, Acta oto-laryngologica.

[12]  Ilona Anderson,et al.  Electric acoustic stimulation of the auditory system: results of a multi-centre investigation , 2008, Acta oto-laryngologica.

[13]  B. Mazurek,et al.  Extra Benefit of a Second Cochlear Implant With Respect to Health-Related Quality of Life and Tinnitus , 2012, Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology.

[14]  S. Iwasaki,et al.  Effects of EAS cochlear implantation surgery on vestibular function , 2013, Acta oto-laryngologica.

[15]  H. Pillsbury,et al.  Is Electric Acoustic Stimulation Better Than Conventional Cochlear Implantation for Speech Perception in Quiet? , 2010, Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology.

[16]  C von Ilberg,et al.  Electric-acoustic stimulation of the auditory system. New technology for severe hearing loss. , 1999, ORL; journal for oto-rhino-laryngology and its related specialties.

[17]  P Nopp,et al.  Sound Localization in Bilateral Users of MED-EL COMBI 40/40+ Cochlear Implants , 2004, Ear and hearing.

[18]  G. Rajan,et al.  The role of preoperative, intratympanic glucocorticoids for hearing preservation in cochlear implantation: A prospective clinical study , 2012, The Laryngoscope.

[19]  English R. King,et al.  Hearing preservation and speech perception outcomes with electric‐acoustic stimulation after 12 months of listening experience , 2013, The Laryngoscope.

[20]  Anna Piotrowska,et al.  Partial deafness cochlear implantation provides benefit to a new population of individuals with hearing loss , 2006, Acta oto-laryngologica.