A STUDY ABOUT THE EQUILIBRIUM FUNCTION AFTER THE FENESTRATION OF LABYRINTH

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  • YAMAKAWA Y.
    Department of Oto-Rhino-Laryngology, Yokohama Municipal University School of Medicine

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  • 内耳開窓手術後の身体平衡機能に関する研究
  • ナイジ カイソウ シュジュツゴ ノ シンタイ ヘイコウ キノウ ニ カンスル ケンキュウ

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Part 1. Clinical observation<br>The author performed various examinations about the equilibrium function on patients, who had received the fenestration operation of labyrinth, and observed the corelation between the restoration of hearing and equilibrium function. A parallel relation between the two was noted.<br>Part 2. Experimental investigation on animals.<br>The author performed the fenestration operation on the horizontal semicircular canal of rabbits, and observed its influence upon the vestibular function, i. e. the spontanous nystagmus, the disturbance of equilibrium, the postrotatory nystagmus, and the caloric nystagmus during and after the operation, and the specimens obtained were studied histologically.<br>As the results, it was noted that the appearance of the symptoms of the inner ear stimulation showed some variation depending on the extent of the operation and especially on the presence of labyrinthine hemorrage or the secondary infectionn during or after the operation.<br>The results of postrotatory nystagmus, caloric nystagmus and histological examination affirmed the propriety of the clinical observation reported in Part 1.

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