末梢性平衡障害例の減衰振子様回転検査所見 : 定量的解析と経時的所見について

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概要

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• The author has studied the characteristics of induced nystagmus in damped pendular rotation test (DPRT) in peripheral vestibular lesions. This test, applied in clinical use by Greiner and Conraux, has been used as one of the routine vestibular examinations in the department of oto-laryngology of Keio University School of Medicine since 1971. During the test procedure, the velocity and acceleration of the chair decrese gradually until the chair stops, eliciting nystagmus in either direction. The diagnostic significance of nystagmus rhythm in this test has been studied in the authors clinic and it has been proved that valuable information could be obtained from this test in the diagnosis of brainstem lesions (Kanzaki, Sakagami, Takahashi 1973) as Greiner had already suggested from their clinical experiences.In this report, the author studied the characteristics of nystagmus response in DPRT and the compensation processes in 102 peripheral vestibular lesion.The results were as follows:1) The number of nystagmus in DPRT was linearly related to the logarithm of the maximum accerelation of the chair. 2) This relationship was well demonstrated in the vestbhulogram, in which the threshold of the induced nystagmus and its deviation in threshold level were quantitatively tabulated. 3) In irreversible peripheral vestibular lesions, the difference in the number of nystagmus in each direction, that is, the slope of the vestibulogram, became smaller as the time elapsed (compensation). In reversible disorders, especially in some type of Menieres disease and Lermoyezs syndrome, recruitmentlike finding were noted in which the differences in induced nytagmus in each direction were greater in weaker stimulations than in stronger stimulations.4) Common mechanism among nystagmus elicited by DPRT, the one elicited by caloric test, and spontaneous nystagmus in peripheral vestibular lesions was speculated from the relationship between frequency of nystagmus and maximum slow phase velocity.

• 社団法人 日本耳鼻咽喉科学会の論文

著者

• 高橋 正紘

  慶応義塾大学医学部耳鼻咽喉科学教室

• 高橋 正紘

  慶応義塾大学耳鼻咽喉科教室

関連論文

• 第33回 日本平衡神経科学会春季学会(研修会) : 新しいめまい検査法(その二)
• 末梢性平衡障害例に於ける減衰振子様回転検査(DPRT)の定量的解析
• 中枢性平衡障害例における減衰振子様回転検査法の診断学的意義
• 末梢性平衡障害例の減衰振子様回転検査所見 : 定量的解析と経時的所見について
• 突発性難聴新鮮例の聴力回復過程と蝸電図所見
• 突発性難聴の予後と平衡機能検査所見 自発眼振,減衰振子様回転検査,視標追跡検査所見を中心に
• Pre- and postoperative nystagmic rhythm in Ménière's disease and damped pendular rotation test
• Experiences with rhinomicrosurgery.

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