The temperature of aural air stimulation equivalent to aural stimulation with water at 20<SUP>°</SUP>C in the caloric test.

DOI
  • Tahara Kazuhiko
    Department of Otolaryngology, Kochi Red Cross Hospital
  • Sekine Kazunori
    Department of Otolaryngology, University of Tokushima School of Medicine
  • Sato Go
    Department of Otolaryngology, University of Tokushima School of Medicine
  • Matsuda Kazunori
    Department of Otolaryngology, University of Tokushima School of Medicine
  • Kamimura Seiichiro
    Department of Otolaryngology, University of Tokushima School of Medicine
  • Azuma Takahiro
    Department of Otolaryngology, University of Tokushima School of Medicine
  • Takeda Noriaki
    Department of Otolaryngology, University of Tokushima School of Medicine

Bibliographic Information

Other Title
  • 少量注水法に対応するエアーカロリック検査の刺激条件の検討

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Abstract

In the present study, we examined the temperature of aural air stimulation that was equivalent to aural stimulation with water at 20°C in the caloric test. In 10 ears of 5 healthy volunteers, the maximum slow phase eye velocities (MSPEVs) of nystagmus induced by aural stimulation with air at 22°C, 46°C and 16°C were the same as those with water at 30°C, 44°C and 20°C, respectively. These findings suggest that caloric stimulation with air at 16°C is equivalent to that with water at 20°C that is commonly used in the caloric test in Japan. The MSPEVs of nystagmus induced by aural stimulation with air at 16°C were over 20°/sec in all ears except one, in which the MSPEV was 19.7°/sec. The criteria of canal paresis where the MSPEV of caloric nystagmus induced by aural stimulation with water at 20°C is less than 20°/sec can be used in the caloric test with aural air stimulation at 16°C.

Journal

  • Equilibrium Research

    Equilibrium Research 74 (1), 15-19, 2015

    Japan Society for Equilibrium Research

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