| Use of the loud sound stimulation test in diagnosis of semicircular canal dehiscence syndrome. | |
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MedLine Citation:
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PMID: 21116643 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Semicircular canal dehiscence (SCD) syndrome is rare, and its diagnosis is a significant challenge in clinical practice. Our aim was to explore application of the loud sound stimulation test for diagnosing SCD syndrome. Eight cases of superior semicircular canal dehiscence (SSCD), among them two patients had bilateral dehiscences and one case of lateral semicircular canal dehiscence (LSCD). A total of 11 dehiscences were studied retrospectively. Loud sounds (pure tones, 100 dB, 110 dB nHL) at frequencies of 500, 1,000, and 2,000 Hz were used to stimulate both ears for 5 s. A temporal bone computed tomography (CT) scan with semicircular canal reconstruction was performed in all patients. Vertigo was present in seven of nine cases following loud sound stimulation. In addition, the patient with LSCD demonstrated horizontal eye movement following loud sound stimulation, whereas six patients with SSCD showed rotational eye movement. Among them, two patients with bilateral superior canal dehiscence showed a positive response to the loud sound stimulation in only one ear. The diagnoses of all patients were confirmed with a high-resolution temporal bone CT with corresponding multi-planar reconstruction of the affected semicircular canals with various size dehiscences. We conclude that the characteristic eye movement following loud sound stimulation is valuable for diagnosing SCD syndrome. In addition, the loud sound stimulation test has unique advantages, especially for confirming the affected ear and the corresponding semicircular canal. |
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Authors:
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Ya-Feng Yu; Yi-Bo Zhang; Chun-Fu Dai; Fang-Lu Chi |
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Publication Detail:
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Type: Journal Article Date: 2010-11-30 |
Journal Detail:
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Title: European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery Volume: 268 ISSN: 1434-4726 ISO Abbreviation: Eur Arch Otorhinolaryngol Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-03-10 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9002937 Medline TA: Eur Arch Otorhinolaryngol Country: Germany |
Other Details:
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Languages: eng Pagination: 513-8 Citation Subset: IM |
Affiliation:
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Department of Otology and Skull Base Surgery, Eye Ear Nose and Throat Hospital, Fudan University, 83 Fenyang Road, Shanghai, 200031, China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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