Round window’s movability measurements with helping of LDV in evaluation of ossicular chain functioning
Journal Title: Otolaryngologia Polska - Year 2010, Vol 64, Issue 7
Abstract
Round window’s movability measurements with helping of LDV in evaluation of ossicular chain functioning. Aim of study: Quantitive evaluation of round window movability in normal conditions and after malleus stapes assembly reconstruction were aims of the study. Methods and materials: In the experiment there were taken 10 non-frozen temporal bones harvested within 48 hours.Temporal bones specimens were prepared like in closed technique with antromastoidectomy and large posterior tympanotomy. Hearing system before and after MSA reconstruction were evaluated by measurement of round window movement. Measurements were performed at four frequencies: 1000 Hz, 2000 Hz, 4000 Hz, 8000 Hz. Results: In the normal ossicular chain the biggest movability were stated at frequency of 1 kHz. After reconstruction at all frequencies measurements were signifi cantly worse. In reconstructed ears the highest movabilities were stated at frequencies 2000 Hz and 4000 Hz. Conclusions: Round window movability could be measured by Laser Doppler Vibrometry in posterior tympanotomy approach. Before reconstruction the biggest movability were evaluated at 1000 Hz and after MSA at 2000 Hz<br/><br/>
Authors and Affiliations
Jacek Sokołowski, Kazimierz Niemczyk, Robert Bartoszewicz, Krzysztof Morawski, Antoni Bruzgielewicz, Barbara Rygalska
Keywords
Related Articles
- EP ID EP345886
- DOI -
- Views 59
- Downloads 0
Rola otolaryngologa – chirurga głowy i szyi w leczeniu nowotworów tarczycy
Wstęp Gruczoł tarczowy jest integralną częścią szyi. Anatomia topograficzna regionu głowy i szyi lokalizuje go w trójkącie szyi środkowym. Jest on zatem narządem, który podlega diagnostyce i leczeniu przez otorynolaryngo...
Quality of life and hearing after cochlear implant placement in patients over 60 years of age
Objective. Multicenter evaluation of the quality of life and quality of hearing after Nucleus® cochlear implant placement in patients over 60 years of age. Reference and Method.Evaluation was performed in patients recei...
Aktualne aspekty etiologii, diagnostyki i leczenia otosklerozy
Rak krtani w województwie warmińsko-mazurskim (1998-2007): analiza epidemiologiczno-kliniczna i ocena wyników leczenia
Bone dehiscences in the middle ear in patients operated on ear diseases in the Otolaryngology Department of Jagiellonian University, Poland from 2008 to 2012
Background: We perform the middle ear operation to remove pathological tissue and in the next step present ossicular chain reconstruction. Otosurgeon has to also identify bone dehiscences, as a potential way to develop o...