Balancing the caloric-induced nystagmus velocity with cold air and water

Kevin J. Munro, Clare L. Bonnington

    Research output: Contribution to journalArticlepeer-review

    Abstract

    A useful alternative to the traditional water caloric is to use an air stimulus. However, the caloric test has not been standardized and a range of parameters are being used in different audiology clinics. The aim of this study was to determine cold air parameters that resulted in a similar slow-component eye velocity to that for water irrigation. Twelve normal subjects underwent caloric testing using air temperatures in the range 18-33°C. The duration and air-flow rate were held constant at 60 s and 5 l/min. A water irrigation at 30°C for 30 s and delivering 150 ml resulted in a mean slow-component eye velocity of 17°/s. An equal response was obtained with an air temperature of 21.0°C. Further work is required to find equivalent air and water responses for other combinations of parameters.
    Original languageEnglish
    Pages (from-to)301-304
    Number of pages3
    JournalBritish Journal of Audiology
    Volume32
    Issue number5
    Publication statusPublished - 1998

    Keywords

    • Air caloric test
    • Nystagmus
    • Slow component velocity
    • Slow phase velocity
    • Water caloric test

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