Abstract
Positional nystagmus and positional vertigo are usually successfully cured by Epley's repositioning maneuver in BPPV, but most of the patients still complain dizzy sensation after the treatment. In this paper, body equilibrium function while standing was investigated by stabilometry with eyes closed in 11 cases of BPPV before and after treatment with repositioning maneuver. These subjects were followed for 4 weeks. In all patients, 75 mg/day of difenidol hydrochloride and 300 mg/day of ATP was medicated.Five of 11 these patients still complained of dizziness or floating sensation 4 weeks after the repositioning maneuver. The total length and the area of the center of gravity was above the standard levels in 6 and 7 of 11, respectively, before the repositioning maneuver. Four of 11 in both total length and area showed abnormalities 4 weeks after treatment with the repositioning maneuver. Between the value of the total length, area and ratio of total length by area before and 4 weeks after treatment did not change, which was statistically confirmed by t-test. Canal dysfunction in canalolithasis of posterior semicircular canal was improved by repositioning maneuver, however, dizzy sensation and unsteadiness during standing with eyes shut, which are supposed to be due to otolith dysfunction, was not influenced by the treatment. Medication and vestibular rehabilitation should be considered to treat persistent dizziness and body dysequilibrium after Epley's maneuver in BPPV.
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