Inner Ear Changes Experimentally Induced by Barotrauma -morphological aspect-

DOI
  • Tanabe T.
    Department of Otolaryngology, National Defense Medical College
  • Hosokawa S.
    Department of Otolaryngology, National Defense Medical College
  • Hiraide F.
    Department of Otolaryngology, National Defense Medical College
  • Inouye T.
    Department of Otolaryngology, National Defense Medical College

Bibliographic Information

Other Title
  • 実験的内耳圧外傷
  • その2 形態学的変化

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Description

In order to investigate the inner ear changes induced by barotrauma, various degrees of the atmospheric pressures were given to guinea pigs in a chamber and morphological changes in the cochlear sensory hairs were mainly studied by means of scanning electron microscope. The main morphological changes of sensory hairs were disarrangement, degeneration, break-off and disappearance. In the group of rapid compression and decompression the severe damage of sensory hairs was noted, and the group of rapid compression and slow decompression was more easily damaged than that of slow compression and rapid decompression. The damage of sensory hairs was noted mainly in the cochlear basal turn. Both inner hairs and outer hairs were damaged, but inner hairs and the first row of outer hairs were more easily damaged than the second and third rows of outer hairs. Round window membrane rupture was not noted in all experimented animals.

Journal

  • Ear Research Japan

    Ear Research Japan 15 (1), 228-230, 1984

    THE JAPAN OTOLOGICAL SOCIETY

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