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DOI: 10.1055/s-0038-1640685
Cochlea fibrosis after temporal bone fracture as a risk factor for cochlear implantation
Introduction:
Aim of the study was the evaluation of cochlea fibrosis, after temporal bone fracture, resulting in consecutive deafness, as well as the related difficulties in cochlear implantation (CI).
Methods:
Five patients, 6, 25, 28, 60 and 72 years of age, with unilateral temporal bone fracture and consecutive deafness were evaluated for CI. Besides audiological testing (Freiburger monosyllable test; pure-tone audiometry; BERA; functional test of the auditory nerve), each patient received CT and MRI investigation.
Results:
In four patients a complete electrode insertion was successful 4 – 179 month after fracture. Within these patients, in three cases a partly obliteration of the basal cochlea was present. In one case (14 month after trauma) a CI was not possible, due to extensive fibrosis of the cochlea, despite a residual liquid-signal in the MRI, resulting in apportion of the procedure. After satisfying implantation, these patients could be audiological rehabilitated successfully.
Conclusion:
Cochlear implantation is suitable for patients with temporal bone fracture and consecutive deafness for binaural hearing rehabilitation. There is a high risk for cochlea fibrosis after temporal bone fracture. Thus cochlear implantation should be performed soon after occurring trauma.
No conflict of interest has been declared by the author(s).
Publikationsverlauf
Publikationsdatum:
18. April 2018 (online)
© 2018. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).
Georg Thieme Verlag KG
Stuttgart · New York