Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Blast injury to sensory hairs: A study in the guinea pig using scanning electron microscopy

  • 32 Accesses

Summary

Guinea pigs were exposed to a blast (maximum 1.0 kg/cm2) of nitrous gas for 0.2 s through the external auditory canal. Then, they were either killed immediately, 1 day, 3 days, 1 week, 2 weeks, or 4 weeks after exposure to the blast. The morphological changes of the cochlear sensory hairs were examined by means of a scanning electron microscope. Changes in the sensory hairs of the animals exposed to the blast for 1 s were examined in the same manner. The results of these experiments show that sensory hairs of the basal and the second turns were damaged more markedly than those of the third and subsequent turns. Outer sensory hairs were damaged more than inner ones.

This is a preview of subscription content, log in to check access.

References

  1. 1.

    Handoh M, Yanagita N, Yokoi H (1981) Scanning electron microscopic studies on inner ear barotrauma. Mainly on the damage of cochlear sensory hairs. Jpn J Otol (Tokyo) 85: 941–950

  2. 2.

    Jacobs P, Martin G (1978) Die Behandlung knalltraumatischer Innenohrschäden mit Dextran-40. HNO 25: 349–352

  3. 3.

    Kerr AG (1978) Blast injuries to the ear. Practitioner 221: 667–682

  4. 4.

    Kerr AG (1980) Trauma and the temporal bone. J Laryngol Otol 94: 107–110

  5. 5.

    Lamkin R, Axelsson A, Mcpherson D, Miller J (1975) Experimental aural barotauma. Electrophysiological and morphological findings. Acta Otolaryngol [Suppl] (Stockh) 335: 1–24

  6. 6.

    Shoji T (1978) Functional and histopathological study on traumatic injury of the conductive structure and inner ear in guinea pigs and rabbits in experimental explosion. Audiology (Japan) 21: 177–188

  7. 7.

    Singh D, Ahluwalia KJS (1968) Blast injuries of the ear. J Laryngol Otol 82: 1017–1028

  8. 8.

    Spoendlin H, Brin JP (1973) Relation of structural change to exposure time and intensity in acoustic trauma. Acta Otolaryngol (Stockh) 75: 220–226

  9. 9.

    Sugiura A (1976) Recovery process and distribution of injuries of Corti's organ in the guinea pig exposed to white noise. Jpn J Otol (Tokyo) 73: 78–86

  10. 10.

    Teter DL, Newell RC, Aspinall KB (1970) Audiometric configurations associated with blast trauma. Laryngoscope 80: 1122–1132

Download references

Author information

Correspondence to Hisashi Yokoi.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Yokoi, H., Yanagita, N. Blast injury to sensory hairs: A study in the guinea pig using scanning electron microscopy. Arch Otorhinolaryngol 240, 263–270 (1984). https://doi.org/10.1007/BF00453381

Download citation

Key words

  • Sensory hairs
  • Blast injury
  • Scanning electron microscope