| Amplitude and area ratios of summating potential/action potential (SP/AP) in Meniere's disease. | |
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MedLine Citation:
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PMID: 19003588 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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CONCLUSIONS: Our results suggest that summating potential/action potential (SP/AP) area ratio may not necessarily have higher sensitivity in the diagnosis of endolymphatic hydrops of Meniere's disease (MD) than SP/AP amplitude ratio in transtympanic electrocochleography (ECochG). OBJECTIVE: Recent studies suggested that SP/AP area curve ratio was more sensitive to endolymphatic hydrops in comparison with SP/AP amplitude ratio in extratympanic ECochG. The purpose of the present study was to evaluate the utility of the SP/AP area curve ratio in transtympanic ECochG for the diagnosis of MD. PATIENTS AND METHODS: A retrospective chart review of 198 patients (209 ears) was conducted in cases of MD. RESULTS: With regard to SP/AP amplitude ratio, 57.1% in definite cases of MD (group 1), 39.6% in probable cases of MD (group 2), and 50.0% in the cases who had transformed from probable MD to definite MD (group 3) showed abnormally high values, respectively. Abnormally high values were observed in 43.9%, 27.7%, and 30.0% in SP/AP area ratio in groups 1, 2, and 3, respectively, indicating that abnormal values were observed more frequently in the amplitude ratio than in the area ratio in all three groups. |
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Authors:
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Akiko Baba; Kenji Takasaki; Fujinobu Tanaka; Naoki Tsukasaki; Hidetaka Kumagami; Haruo Takahashi |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Acta oto-laryngologica Volume: 129 ISSN: 1651-2251 ISO Abbreviation: Acta Otolaryngol. Publication Date: 2009 Jan |
Date Detail:
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Created Date: 2008-12-19 Completed Date: 2009-03-11 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0370354 Medline TA: Acta Otolaryngol Country: Norway |
Other Details:
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Languages: eng Pagination: 25-9 Citation Subset: IM |
Affiliation:
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Department of Otolaryngology Head and Neck Surgery, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto, Nagasaki, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Action Potentials
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physiology* Audiometry, Evoked Response* Endolymphatic Hydrops / diagnosis, physiopathology* Female Humans Male Meniere Disease / diagnosis, physiopathology* Reference Values Retrospective Studies Signal Processing, Computer-Assisted* |
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