| Head-Shaking Aids in the Diagnosis of Acute Audiovestibular Loss due to Anterior Inferior Cerebellar Artery Infarction. | |
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MedLine Citation:
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PMID: 23296146 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Objective: To determine the patterns and diagnostic value of head-shaking nystagmus (HSN) in patients with acute audiovestibular loss. Method: Eighteen patients underwent evaluation of spontaneous nystagmus, gaze-evoked nystagmus, HSN, head impulse test, ocular tilt reaction, subjective visual vertical, bithermal caloric tests, and pure-tone audiogram. The findings were compared with those of 21 patients with labyrinthitis. Results: Fifteen patients (83%) exhibited HSN, and the horizontal HSN usually beat contralesionally (10/14, 71%). However, 9 (50%) patients also showed patterns of central HSN that included perverted HSN (n = 7), HSN in the opposite direction of spontaneous nystagmus (n = 4), and HSN beating towards unilateral canal paresis or abnormal head impulse testing (n = 3). Overall, central HSN, gaze-evoked nystagmus, and normal head impulse testing were specific for anterior inferior cerebellar artery (AICA) infarction. Moreover, central HSN was the only sign that indicated stroke in 1 of our patients with isolated audiovestibular syndrome. Lesion subtraction analyses revealed that damage to the flocculus was relatively frequent in patients with perverted HSN. Conclusions: In AICA infarction, HSN was common with both peripheral and central patterns. Careful evaluation of HSN may provide clues for AICA infarction in patients with acute audiovestibular loss. |
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Authors:
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Young Eun Huh; Ja-Won Koo; Hyung Lee; Ji-Soo Kim |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-12-28 |
Journal Detail:
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Title: Audiology & neuro-otology Volume: 18 ISSN: 1421-9700 ISO Abbreviation: Audiol. Neurootol. Publication Date: 2012 Dec |
Date Detail:
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Created Date: 2013-1-8 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9606930 Medline TA: Audiol Neurootol Country: - |
Other Details:
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Languages: ENG Pagination: 114-124 Citation Subset: - |
Copyright Information:
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Copyright © 2012 S. Karger AG, Basel. |
Affiliation:
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Department of Neurology, Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam-si, South Korea. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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