Universität zu Köln

Stuermer, Konrad Johannes, Schwarz, David, Anagiotos, Andreas, Lang-Roth, Ruth, Huettenbrink, Karl-Bernd and Luers, Jan Christoffer ORCID: 0000-0002-8273-2234 (2018). Cochlear implantation using the underwater technique: long-term results. Eur. Arch. Oto-Rhino-Laryn., 275 (4). S. 875 - 882. NEW YORK: SPRINGER. ISSN 1434-4726

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Abstract

The opening of the round window and the insertion of the electrode array into the scala tympani during cochlear implant surgery can lead to a pressure shock of the delicate inner ear structures. By filling the tympanic cavity with Ringer Solution during these surgical steps (underwater technique), the hydrostatic pressure of the fluid acts as a smooth pressure stabilizer, avoiding a pressure shock of the inner ear structures. The aim of this retrospective study was to present long-term results of this new method of cochlear implantation in underwater technique. Altogether, 47 implantations in 43 patients with residual hearing at the frequencies 250, 500 and 1000 Hz in the unaided preoperative pure tone audiometry were included. A cochlear implantation via round window with a conventional full-length electrode was performed in underwater technique. Changes of residual hearing 7 weeks and 24 months after surgery were analyzed. Overall postimplant hearing preservation 7 weeks after implantation was achieved in 22 ears (47%). Subsequent follow-up was performed on average 24 months after surgery (range 12 months-4.2 years) in all patients. At this late postoperative evaluation, preservation of hearing was recorded in 18 ears (38%). Neither the follow-up time nor the type of electrode had a significant impact on the postoperative hearing loss. The underwater technique is an atraumatic cochlear implantation technique with hearing preservation rates comparable to results in literature and a very small hearing preservation decline rate over time even when using full-length CI electrodes.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Stuermer, Konrad Johannes UNSPECIFIED UNSPECIFIED UNSPECIFIED Schwarz, David UNSPECIFIED UNSPECIFIED UNSPECIFIED Anagiotos, Andreas UNSPECIFIED UNSPECIFIED UNSPECIFIED Lang-Roth, Ruth UNSPECIFIED UNSPECIFIED UNSPECIFIED Huettenbrink, Karl-Bernd UNSPECIFIED UNSPECIFIED UNSPECIFIED Luers, Jan Christoffer UNSPECIFIED orcid.org/0000-0002-8273-2234 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-192167
DOI:	10.1007/s00405-018-4886-7
Journal or Publication Title:	Eur. Arch. Oto-Rhino-Laryn.
Volume:	275
Number:	4
Page Range:	S. 875 - 882
Date:	2018
Publisher:	SPRINGER
Place of Publication:	NEW YORK
ISSN:	1434-4726
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ELECTRIC-ACOUSTIC STIMULATION; HEARING PRESERVATION; RESIDUAL HEARING; CONSERVATION; IMPACT; SURGERY; TRAUMA; LENGTH Multiple languages Otorhinolaryngology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/19216