LIU Jun.Point to Consider in Cochlear Implantation for Patients with Microtia and Atresia[J].Chinese Scientific Journal of Hearing and Speech Rehabilitation,2023,21(02):121-124.
LIU Jun.Point to Consider in Cochlear Implantation for Patients with Microtia and Atresia[J].Chinese Scientific Journal of Hearing and Speech Rehabilitation,2023,21(02):121-124. DOI: 10.3969/j.issn.1672-4933.2023.02.003.
Point to Consider in Cochlear Implantation for Patients with Microtia and Atresia
Severe-profound hearing loss with poor hearing aids was an indication for cochlear implantation(CI). Preoperative evaluation
surgery and postoperative rehabilitation had their own characteristics in CI patients with microtia and atresia(MA). Audiological and hearing aid evaluation should be completed in patients with MA. Pure tone audiometry
acoustic immittance
otoacoustic emission and ABR thresholds of air conduction could be affected by the external auditory meatus atresia. So the ABR bone conduction threshold should be taken into consideration. Imaging evaluations includes the temporal bones high-resolution computed tomography (HRCT) and the cerebral magnetic resonance imaging (MRI) should be performed to provide anatomy information
which were important to the surgical plans. When CI was performed in patients with MA
it was necessary to pay attention to the ones who were with abnormal anatomy
especially the facial nerve and inner ear malformations. The facial nerve monitoring and intraoperative CT should be used to avoid injury of facial nerve and make sure that the electrode location was accurate. It was necessary to minimize the incision to the second stage operation of auricle deformity. A specially designed speech processor was needed after the operation
because there was no normal auricle suspension. Similar to the CI patients with normal anatomy
the hearing threshold
speech recognition rate and MAIS/CAP could be used to assess the hearing and speaking ability. So
to the CI patients with MA
we should consider the characteristics of anatomy and operation to reduce the occurrence of complications.
Hodgetts WE,Scollie SD.DSL prescriptive targets for bone conduction devices: adaptation and comparison to clinical fittings[J].International Journal of Audiology,2017,56(7):521-530.
Zhang DJ,Yuan YY,Dai P,et al.Sequential bilateral cochlear implantation in a child with severe external,middle,and inner ear malformations:surgical considerations and practical aspects[J].ORL;journal for oto-rhino-laryngology and its related specialties,2021, 83(6):471-477.
Svrakic M.Rare case of bilateral aural atresia and cochlear dysplasia:when cochlear implantation is not the answer[J].Cochlear implants international,2018,19(4):234-238.