コンピュ-タ-回転検査の臨床的検討

概要

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Rotational testing by Computerized Rotary Chair System was carried out on 48 patients.1) Patients with disturbances of the vestibuloocular system showed phase lag distortion. Patients with cerebellopontine angle tumor, postlabyrinthectomy patients, and those who were suffering an attack of Ménière's disease showed phase lag shifts in the range of 0.01 to 0.08Hz. On the other hand, patients with Ménière's disease in remission, and those with otitis media, benign paroxysmal positional vertigo or psychotic dizziness showed phase lag shifts only in the lower frequencies of 0.01 to 0.02Hz.2) Labyrinthine preponderance correlated positively with subjective symptoms. Labyrinthine preponderance shifts improved gradually from high frequencies, but continued to be abnormal at 0.01Hz for a long time after subjective symptoms had been relieved.3) The Rotary Chair system is very useful in the evaluation of vestibular function in dysequilibrium patients. The patterns of phase lag and labyrinthine preponderance, while they do not provide pathognomonic data, do give precise additional information that is useful in confirming other test results.
耳鼻咽喉科臨床学会の論文