title: [Cochlear implant treatment of patients with single-sided deafness or asymmetric hearing loss. German version].
abstract: BACKGROUND
  The rehabilitation of patients with single-sided deafness (SSD) or asymmetric hearing loss can be achieved with conventional (bilateral) contralateral routing of signals ((Bi)CROS) hearing aids ((Bi)CROS-HA, (Bi)CROS), bone-anchored hearing systems (BAHS) or cochlear implants (CI). To date, only small case series have been published on treatment outcomes in SSD patients after CI surgery and there are only a few comparative studies evaluating rehabilitation outcomes.
  
  
  OBJECTIVE
  The aim of this study was to provide evidence of successful treatment of SSD and asymmetric hearing loss with a CI compared to the untreated monaural hearing condition and the BAHS and (Bi)CROS treatment options in a large number of patients.
  
  
  METHODS
  In a single-centre study, 45 patients with SSD and 40 patients with asymmetric hearing loss were treated with a CI after careful evaluation for CI candidacy. Monaural speech comprehension in noise and localisation ability were examined with (Bi)CROS-HA and BAHS devices (on a test rod) both preoperatively and at 12 months after CI switch-on. At the same intervals, subjective evaluation of hearing ability was conducted using the Speech, Spatial and Qualities of Hearing Scale (SSQ).
  
  
  RESULTS
  This report presents the first evidence of successful binaural rehabilitation with CI in a relatively large patient cohort and the advantages over (Bi)CROS and BAHS in smaller subgroups, thus confirming the indication for CI treatment. Moreover, patients with long-term acquired deafness (>10 years) show a benefit from the CI comparable to that observed in patients with shorter-term deafness.
authors.affiliation: Universitätsklinik für Hals-, Nasen- und Ohrenheilkunde und Poliklinik, Medizinische Fakultät, Universitätsklinikum Freiburg, Albert-Ludwigs-Universität Freiburg, Killianstrasse 5, 79106, Freiburg, Deutschland. susan.arndt@uniklinik-freiburg.de.
authors.forename: S
authors.initials: S
authors.lastname: Arndt
authors.affiliation: Universitätsklinik für Hals-, Nasen- und Ohrenheilkunde und Poliklinik, Medizinische Fakultät, Universitätsklinikum Freiburg, Albert-Ludwigs-Universität Freiburg, Killianstrasse 5, 79106, Freiburg, Deutschland.
authors.forename: R
authors.initials: R
authors.lastname: Laszig
authors.affiliation: Universitätsklinik für Hals-, Nasen- und Ohrenheilkunde und Poliklinik, Medizinische Fakultät, Universitätsklinikum Freiburg, Albert-Ludwigs-Universität Freiburg, Killianstrasse 5, 79106, Freiburg, Deutschland.
authors.forename: A
authors.initials: A
authors.lastname: Aschendorff
authors.affiliation: Universitätsklinik für Hals-, Nasen- und Ohrenheilkunde und Poliklinik, Medizinische Fakultät, Universitätsklinikum Freiburg, Albert-Ludwigs-Universität Freiburg, Killianstrasse 5, 79106, Freiburg, Deutschland.
authors.forename: F
authors.initials: F
authors.lastname: Hassepass
authors.affiliation: Universitätsklinik für Hals-, Nasen- und Ohrenheilkunde und Poliklinik, Medizinische Fakultät, Universitätsklinikum Freiburg, Albert-Ludwigs-Universität Freiburg, Killianstrasse 5, 79106, Freiburg, Deutschland.
authors.forename: R
authors.initials: R
authors.lastname: Beck
authors.affiliation: Universitätsklinik für Hals-, Nasen- und Ohrenheilkunde und Poliklinik, Medizinische Fakultät, Universitätsklinikum Freiburg, Albert-Ludwigs-Universität Freiburg, Killianstrasse 5, 79106, Freiburg, Deutschland.
authors.forename: T
authors.initials: T
authors.lastname: Wesarg
mesh_terms: D019929:Cochlear Implantation; D003054:Cochlear Implants; D003638:Deafness / Q000534:rehabilitation; D006310:Hearing Aids; D046088:Hearing Loss, Unilateral; D006801:Humans; D011446:Prospective Studies; D013017:Sound Localization; D013067:Speech Perception; D016896:Treatment Outcome
keywords: Bone Conduction Implant; CROS hearing aid; Cochlea implant; Rehabilitation; Unilateral hearing loss, single sided deafness