平衡機能検査における微弱回転刺激の特性に関する研究(異常編)

概要

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The vestibular functions in the pathological cases were examined with the minor rotatory stimulations. The findings were compared with those in the normal cases, especially in the para- meter of the distributions of the nystagmus frequencies. Subjects consisted of twenty cases of unilateral labyrinthine disorder, five cases of acoustic tumor and ten post-operative cases of cerebello-vermis tumor. The following conclusions were obtained in each pathological entity, respectively. 1) Unilateral labyrinthine disorder cases. Per-rotatory nystagmus indicated the functions of the cupula-endolymphatic systems better than the post-rotatory one. However, the affected side was hardly determined by this test. The per-rotatory nystagmus frequencies had the tedency to decrease in the course of central compensations. The vesibular recruitment phenomena were suspected in seven cases. The multiple peaks observed in the declination courses, were considered abnormal response. 2) Acoustic tumor cases. The per-rotatory and the post-rotatory nystagmus showed the distributions of the lower frequ- encies. However, the nystagmus frequency patterns resembled those of the normal cases. 3) Post-operative cases of the cerebello-vermis tumor. The preponderance of the nystagmus and the operative findings of the cerebello-vermis tumors did not correspond in many cases.
社団法人日本耳鼻咽喉科学会の論文