title: Electro acoustic stimulation of the auditory system: UNICAMP's surgical approach.
abstract: A new era has arrived in auditory rehabilitation with the introduction of new technologies such as electroacoustic stimulation (EAS). EAS is indicated for patients with residual hearing at low frequencies and severe or profound hearing loss at high frequencies. These patients have no indication for conventional cochlear implant and have difficulties in adapting to individual sound amplification devices. Preservation of hearing is vital in this process; the surgical technique must be based on this concept.
  
  
  OBJECTIVE
  To present the cochlear implant surgical technique with MED-EL Mand FlexEAS to preserve hearing in patients with hearing loss at high frequencies and to maintain low frequency hearing. We are the first institution to carry out this treatment in Brazil.
  
  
  METHODS
  A case report of the surgical technique carried out in four patients; the procedure was carried out by the cochlear implant group of a specialized clinical hospital.
  
  
  RESULTS
  The procedures were successful and uneventful.
  
  
  CONCLUSIONS
  We described the technique used at our institution for implants using EAS; the surgical technique is complex and includes steps for preservation of hearing.
authors.affiliation: Otorhinolaryngology and Head and Neck Surgery Program, School of Medical Sciences, State University of Campinas, São Paulo, Brazil. guimachadocarvalho@gmail.com
authors.forename: Guilherme Machado de
authors.initials: GM
authors.lastname: Carvalho
authors.forename: João Paulo Peral
authors.initials: JP
authors.lastname: Valente
authors.forename: Alexandre Scalli Mathias
authors.initials: AS
authors.lastname: Duarte
authors.forename: Eder Barbosa
authors.initials: EB
authors.lastname: Muranaka
authors.forename: Alexandre Caixeta
authors.initials: AC
authors.lastname: Guimarães
authors.forename: Marcelo Naoki
authors.initials: MN
authors.lastname: Soki
authors.forename: Walter Adriano
authors.initials: WA
authors.lastname: Bianchini
authors.forename: Arthur Menino
authors.initials: AM
authors.lastname: Castilho
authors.forename: Jorge Rizzato
authors.initials: JR
authors.lastname: Paschoal
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods*; D019929:Cochlear Implantation / Q000379:methods*; D004558:Electric Stimulation / Q000379:methods*; D006312:Hearing Loss, Bilateral / Q000534:rehabilitation / Q000601:surgery*; D006319:Hearing Loss, Sensorineural / Q000534:rehabilitation / Q000601:surgery*; D006801:Humans; D012720:Severity of Illness Index; D016896:Treatment Outcome