Zmiany impedancji elektrod u użytkowników implantów ślimakowych
Journal Title: Otolaryngologia Polska - Year 2011, Vol 65, Issue 3
Abstract
SUMMARY Impedance measurements are routinely performed during the cochlear implan-tation. These measurements make possible to check, whether all electrodes work correctly and are useful in the monitoring of implant's functioning during rehabilitation. The analysis of the impedance's changes makes pos-sible to estimate, what processes happen in tissues and liquids of the inner ear around the electrode. The aim of the study: The aim of the study was to estimate changes of the electrodes' impedance in cochlear implants users. Materia! and methods: Measurements of the impedance was performed on every electrode introduced into the cochlea. Impedance measurements were investigated in 42 adult persons operated at the Department of Otolaryngo-logy Medical University of Lublin. The impedance of electrodes in cochlear implants users was measured during operation, during the activation of the speech processor and during following settings of the speech processor. Results: During activation of the speech processor we observed elevated values of the impedance, higher then during intra-operating-measurement. On the second fitting impedances decrease and then were stable at this level during one year follow-up. Conclusions: Increasing values of impedance during first fitting of the speech processor support the hypothesis that a layer of fibrous tissue forms around the electrode because of the inflammatory changes or due to exudation of protein. Such changes could be observed after cochlear implantation. Imped-ance values decrease after first fitting and remain stable. This may suggest that electrical stimulation prevents from adverse changes in the cochlea.
Authors and Affiliations
Marek Zadrożniak, Marcin Szymański, Henryk Siwiec, Tomasz Broda
Keywords
Related Articles
- EP ID EP52263
- DOI -
- Views 90
- Downloads 0
Rak krtani w województwie warmińsko-mazurskim (1998-2007): analiza epidemiologiczno-kliniczna i ocena wyników leczenia
The significance of electrophysiologic examinations in vestibular schwannomas diagnosis
SUMMARY The most important for the diagnosis of vestibular schwannoma is MRI tech-nic, which allows assessing its size and shape. The gold diagnostic standard includes also PTA, SD and ABR, nystagmography with calorics a...
Reconstruction of dissected Stensen’s duct after facelift surgery
Rejuvenation procedures, especially facelift are nowadays common type of cosmetic surgery. According to the statistical data, facelifts were the seventh most popular aesthetic surgery performed after liposuction, breast...
Hearing improvement in patients operated on chronic otitis media
Nowotwory glinianek przyusznych w materiale Klinicznego Oddziału Otolaryngologicznego 4. Wojskowego Szpitala Klinicznego z Poliklinik4 we Wrocławiu w latach 1992-2010
SUMMARY Aim: The aim of the study is the analyses of parotid glands neoplasms on 105 patients who underwent surgery at the Otolaryngology Clinical Ward of 4th Military Clinical Hospital with the Policlinic in Wroctaw in...