Journal
AURIS NASUS LARYNX
Volume 41, Issue 4, Pages 331-336Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.anl.2013.12.011
Keywords
Inner ear anomaly; Gusher; Cochlear implantation
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Objective: Gusher in inner ear malformations is common in patients with incomplete partition type I and type III. It is also common in less severe form as oozing in incomplete partition type II and large vestibular aqueduct. It is important to prevent cerebrospinal fluid (CSF) escape around the electrode to prevent meningitis. Methods: The custom-made device was produced by Med-El Company. It has a cork-like stopper instead of the usual silicon ring to prevent gusher. There are two types of electrodes of different lengths. The standard one is 25 mm (contact space 1.7 mm) and the short one is 20 mm (contact space 1.3 mm). It was used in 50 patients with different inner ear malformations. Results: Thirteen patients had gusher, and 11 patients oozing during cochleostomy. One patient with initial prototype of the cork electrode had to be revised because of persistent oozing around the electrode. Another patient had slow extrusion of the electrode most probably due to CSF pulsation and had to be revised. Both patients had no more CSF fistula. Conclusion: CSF fistula in inner ear malformations is a serious situation which may lead to recurrent meningitis. The new electrode with cork stopper looks promising in preventing the postoperative CSF leak around the electrode. (C) 2014 Elsevier Ireland Ltd. All rights reserved.
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