| Recovery of dynamic visual acuity in unilateral vestibular hypofunction. | |
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MedLine Citation:
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PMID: 12925338 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To determine the effect of vestibular exercises on the recovery of visual acuity during head movement in patients with unilateral vestibular hypofunction. Study DESIGN: Prospective, randomized, double-blind study. SETTING: Ambulatory referral center. PATIENTS: Twenty-one patients with unilateral vestibular hypofunction, aged 20 to 86 years. INTERVENTION: One group (13 patients) performed vestibular exercises designed to enhance the vestibulo-ocular reflex, and the other group (8 patients) performed placebo exercises. The placebo group was switched to vestibular exercises after 4 weeks. OUTCOME MEASURES: Measurements of dynamic visual acuity (DVA) during predictable (DVA-predictable) and unpredictable (DVA-unpredictable) head movements by means of a computerized test and measurement of intensity of oscillopsia by means of a visual analog scale. RESULTS: As a group, patients who performed vestibular exercises showed a significant improvement in DVA-predictable (P<.001) and DVA-unpredictable (P<.001), while those performing placebo exercises did not (P =.07). On the basis of stepwise regression analysis, the leading factor contributing to improvement was vestibular exercises. This reached significance for DVA-predictable (P =.009) but not DVA-unpredictable (P =.11). Other factors examined included age, time from onset, initial DVA, oscillopsia, and duration of treatment. Changes in oscillopsia did not correlate with DVA-predictable or DVA-unpredictable. CONCLUSIONS: Use of vestibular exercises is the main factor involved in recovery of DVA-predictable and DVA-unpredictable in patients with unilateral vestibular hypofunction. Exercises may foster the use of centrally programmed eye movements that could substitute for the vestibulo-ocular reflex. The DVA-predictable would benefit more from this than would DVA-unpredictable. |
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Authors:
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Susan J Herdman; Michael C Schubert; Vallabh E Das; Ronald J Tusa |
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Publication Detail:
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Type: Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Archives of otolaryngology--head & neck surgery Volume: 129 ISSN: 0886-4470 ISO Abbreviation: Arch. Otolaryngol. Head Neck Surg. Publication Date: 2003 Aug |
Date Detail:
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Created Date: 2003-08-19 Completed Date: 2003-10-02 Revised Date: 2009-11-03 |
Medline Journal Info:
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Nlm Unique ID: 8603209 Medline TA: Arch Otolaryngol Head Neck Surg Country: United States |
Other Details:
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Languages: eng Pagination: 819-24 Citation Subset: AIM; IM |
Affiliation:
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Department of Rehabilitation Medicine, Emory University, Atlanta, Ga., USA. sherdma@emory.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Double-Blind Method Exercise Therapy* Female Humans Male Middle Aged Prospective Studies Regression Analysis Vestibular Diseases / physiopathology*, therapy* Visual Acuity / physiology* |
| Grant Support | |
ID/Acronym/Agency:
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03196//PHS HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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