Universität zu Köln

Anagiotos, Andreas, Beutner, Dirk, Gostian, Antoniu-Oreste, Schwarz, David ORCID: 0000-0002-4580-8383, Luers, Jan-Christoffer and Huettenbrink, Karl-Bernd (2016). Insertion of Cochlear Implant Electrode Array Using the Underwater Technique for Preserving Residual Hearing. Otol. Neurotol., 37 (4). S. 339 - 345. PHILADELPHIA: LIPPINCOTT WILLIAMS & WILKINS. ISSN 1537-4505

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Abstract

Objective:To describe a method of cochlear implantation in which the opening of the cochlea and the electrode array insertion are performed under water (underwater technique).Study Design:Retrospective patient review.Setting:Academic tertiary referral center.Patients:Fifteen implantations in children and adult patients with residual hearing at the frequencies 250, 500, and 1000Hz on the unaided preoperative pure-tone audiometry were included in this study.Intervention(s):Cochlear implantation with a conventional full-length electrode, in which the opening of the cochlea and the electrode array insertion are performed after the tympanic cavity was filled with body-temperature Ringer solution.Main Outcome Measure(s):Changes on residual hearing 6 to 8 weeks after surgery and at subsequent follow-up appointments were analyzed. Preservation of residual hearing was defined as measurable postoperative threshold at the frequencies 250, 500, and 1000Hz.Results:Overall postimplant hearing preservation 6 to 8 weeks after implantation was achieved in 13 of the patients (87%). Subsequent follow-up was performed on average 15.2 months after surgery (range, 7-32) in 14 out of 15 patients. At this late postoperative evaluation preservation of hearing was recorded in nine patients (64%), whereas in the remaining five patients (36%) no residual hearing was measured.Conclusion:The underwater technique offers a reliable nontraumatic method for electrode array insertions during cochlear implantation. The method respects the physiology of the cochlea und minimizes the pressure variations during cochlear opening and implantation.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Anagiotos, Andreas UNSPECIFIED UNSPECIFIED UNSPECIFIED Beutner, Dirk UNSPECIFIED UNSPECIFIED UNSPECIFIED Gostian, Antoniu-Oreste UNSPECIFIED UNSPECIFIED UNSPECIFIED Schwarz, David UNSPECIFIED orcid.org/0000-0002-4580-8383 UNSPECIFIED Luers, Jan-Christoffer UNSPECIFIED UNSPECIFIED UNSPECIFIED Huettenbrink, Karl-Bernd UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-279601
DOI:	10.1097/MAO.0000000000000989
Journal or Publication Title:	Otol. Neurotol.
Volume:	37
Number:	4
Page Range:	S. 339 - 345
Date:	2016
Publisher:	LIPPINCOTT WILLIAMS & WILKINS
Place of Publication:	PHILADELPHIA
ISSN:	1537-4505
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language HAIR-CELLS; ACOUSTIC STIMULATION; GUINEA-PIG; PRESERVATION; CONSERVATION; SURGERY; TRAUMA; MEMBRANE; GDNF Multiple languages Clinical Neurology; Otorhinolaryngology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/27960