|Mechanism of dynamic visual acuity recovery with vestibular rehabilitation.|
|PMID: 18295629 Owner: NLM Status: MEDLINE|
|OBJECTIVE: To determine why dynamic visual acuity (DVA) improves after vestibular rehabilitation in people with vestibular hypofunction.
DESIGN: Combined descriptive and intervention study.
SETTING: Outpatient department in an academic medical institution.
PARTICIPANTS: Five patients (age, 42-66 y) and 4 age-matched controls (age, 39-67 y) were studied. Patients had vestibular hypofunction (mean duration, 177+/-188 d) identified by clinical (positive head thrust test, abnormal DVA), physiologic (reduced angular vestibulo-ocular reflex [aVOR] gain during passive head thrust testing), and imaging examinations (absence of tumor in the internal auditory canals or cerebellopontine angle).
INTERVENTION: Vestibular rehabilitation focused on gaze and gait stabilization (mean, 5.0+/-1.4 visits; mean, 66+/-24 d). The control group did not receive any intervention.
MAIN OUTCOME MEASURES: aVOR gain (eye velocity/head velocity) during DVA testing (active head rotation) and horizontal head thrust testing (passive head rotation) to control for spontaneous recovery.
RESULTS: For all patients, DVA improved (mean, 51%+/-25%; range, 21%-81%). aVOR gain during the active DVA test increased in each of the patients (mean range, 0.7+/-0.2 to 0.9+/-0.2 [35%]). aVOR gain during passive head thrust did not improve in 3 patients and improved only partially in the other 2. For control subjects, aVOR gain during DVA was near 1.
CONCLUSIONS: Our data suggest that vestibular rehabilitation increases aVOR gain during active head rotation independent of peripheral aVOR gain recovery.
|Michael C Schubert; Americo A Migliaccio; Richard A Clendaniel; Amir Allak; John P Carey|
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|Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't|
|Title: Archives of physical medicine and rehabilitation Volume: 89 ISSN: 1532-821X ISO Abbreviation: Arch Phys Med Rehabil Publication Date: 2008 Mar|
|Created Date: 2008-02-25 Completed Date: 2008-03-12 Revised Date: 2013-06-05|
Medline Journal Info:
|Nlm Unique ID: 2985158R Medline TA: Arch Phys Med Rehabil Country: United States|
|Languages: eng Pagination: 500-7 Citation Subset: AIM; IM|
|Department of Otolaryngology Head and Neck Surgery, Johns Hopkins School of Medicine, Baltimore, MD 21287-0910, USA. email@example.com|
|APA/MLA Format Download EndNote Download BibTex|
Analysis of Variance
Exercise Therapy / methods*
Recovery of Function
Reflex, Vestibulo-Ocular / physiology*
Severity of Illness Index
Vertigo / diagnosis, rehabilitation
Vestibular Diseases / diagnosis, rehabilitation*
Vestibular Function Tests
Visual Acuity / physiology*
|K23 DC007926-04/DC/NIDCD NIH HHS; K23-007926//PHS HHS; R01-DC005040/DC/NIDCD NIH HHS; R03-DC007346/DC/NIDCD NIH HHS|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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