メニエ-ル病患者の起立時重心動揺 (メニエ-ル病の研究-3-<特集>)

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Body sway while standing was observed using a straingauge-platform system and a minocomputer to clarify the characteristics of disequilibrium in patients with Ménière's disease.The test were conducted on 20 patients with unilateral definite Ménière's disease. Each subject was placed on the platform of the sensonograph with feet together and asked to look straight ahead. The output from the sensonograph was connected to a plotting unit. The information obtained was at the same time fed into a data recorder, which separately stored the data of the lateral and antero-posterior movement of the center of gravity on the magnetic tape. The recorded data on the tape was fed into a digital computer for further analysis.The following results were obtained:1. Three types of locus patterns were traced. The centripetal type was observed in 9 subjects, the left and right type in 6 and the forward and backward type in 5.2. The total length of the locus traced by the center of gravity in the patients with Ménière's disease during one minute standing was 57.4±9.9cm with the eyes open and 90.3±23.7cm with the eyes closed, while that of the normal subjects was 53.2±8.0cm with eyes open and 78.6±14.1cm with eyes closed.3. In patients with Ménière's disease, the time course in the position of the center of gravity was affected by the spontaneous nystagmus. The relationship between the average position of the center of gravity and the direction of the spontaneous nystagmus was certain and showed a shift of the position to the direction of slow phase of the nystagmus.4. Calculated and depicted frequency spectra of the movement of the center of gravity in the patients with Ménière's disease resembled that of Type II or Type III of the spectra in normal subjects, which suggested a tendency towards orthostatic hypotension or psychic tension.
耳鼻咽喉科臨床学会の論文

著者

田口喜一郎
信州大学医学部耳鼻咽喉科学教室

メニエ-ル病患者の起立時重心動揺 (メニエ-ル病の研究-3-<特集>)

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