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Magnet displacement : a rare complication following cochlear implantation

Wild, Corina and Allum, John and Probst, Rudolf and Abels, Daniel and Fischer, Claude and Bodmer, Daniel. (2010) Magnet displacement : a rare complication following cochlear implantation. European archives of oto-rhino-laryngology, Vol. 267, H. 1. pp. 57-59.

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Official URL: http://edoc.unibas.ch/dok/A5252048

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Abstract

The purpose of this paper is to describe cases which reported complication after cochlear implantation in children: displacement of magnet from the receiver pocket, possibly aided by the use of magnetic toys. We observed magnet displacement in two female children from the same family and in one male child. Age at implantation was 23, 51, and 24 months, respectively. Magnet displacement occurred at 37, 16, and 32 months, respectively after the initial surgery. The magnets were replaced under general anaesthesia and we did not observe recurrent magnet dislodgement. Measurements indicated that forces required to remove the magnet from its pocket were not greater than those exerted by magnetic toys or the magnet used in the external sender coil. Although magnet displacement is not common after cochlear implantation, it is a major complication in children where subsequent general anaesthesia and surgery are necessary to replace the magnet. Therefore, we propose that pockets for removable magnets of cochlear implants used in children should be redesigned to increase forces to remove the magnet or that removable magnets not be used at all.
Faculties and Departments:03 Faculty of Medicine > Bereich Spezialf├Ącher (Klinik) > Otorhinolaryngologie > Oto-Rhino-Laryngologie (Bodmer)
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Spezialf├Ącher (Klinik) > Otorhinolaryngologie > Oto-Rhino-Laryngologie (Bodmer)
UniBasel Contributors:Bodmer, Daniel K
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Springer International
ISSN:0937-4477
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:21 Jun 2013 12:22
Deposited On:22 Mar 2012 13:38

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