Comparison of Responses to Air, Water, and Closed-Loop Caloric Irrigators Three types of commercially available caloric irrigation units—air, water, and closed-loop—were evaluated for nystagmus response patterns and comfort. Electronystagmographic recordings were analyzed for slow-phase velocity, response duration, amplitude, frequency, and test-retest reliability. Significant differences were found among the three types of irrigators, between warm and cool irrigators, and between male ... Research Article
Research Article  |   February 01, 1992
Comparison of Responses to Air, Water, and Closed-Loop Caloric Irrigators
 
Author Affiliations & Notes
  • Elizabeth A. Karlsen
    Otolaryngic Head and Neck Surgery Foundation University of Kansas Medical Center Kansas City, KS
  • Hany H. Mikhail
    Otolaryngic Head and Neck Surgery Foundation University of Kansas Medical Center Kansas City, KS
  • C. W. Norris
    Otolaryngic Head and Neck Surgery Foundation University of Kansas Medical Center Kansas City, KS
  • Ruth S. Hassanein
    Department of Biometry University of Kansas Medical Center Kansas City, KS
Article Information
Balance & Balance Disorders / Hearing / Research Articles
Research Article   |   February 01, 1992
Comparison of Responses to Air, Water, and Closed-Loop Caloric Irrigators
Journal of Speech, Language, and Hearing Research, February 1992, Vol. 35, 186-191. doi:10.1044/jshr.3501.186
History: Received July 13, 1990 , Accepted April 18, 1991
 
Journal of Speech, Language, and Hearing Research, February 1992, Vol. 35, 186-191. doi:10.1044/jshr.3501.186
History: Received July 13, 1990; Accepted April 18, 1991

Three types of commercially available caloric irrigation units—air, water, and closed-loop—were evaluated for nystagmus response patterns and comfort. Electronystagmographic recordings were analyzed for slow-phase velocity, response duration, amplitude, frequency, and test-retest reliability. Significant differences were found among the three types of irrigators, between warm and cool irrigators, and between male and female subjects. Test-retest reliability was adequate for all three units. Subjects clearly favored the closed-loop system over the water and air irrigators, but the water irrigator yielded the most robust caloric response.

Acknowledgments
This work was supported in part by the AMIDEAST Fellowship Program for Egypt and by the Otolaryngic Head and Neck Surgery Foundation.
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