How is caloric testing performed in the evaluation of dizziness, vertigo, and imbalance?

Updated: Mar 13, 2017
  • Author: Hesham M Samy, MD, PhD; Chief Editor: Robert A Egan, MD  more...
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Caloric testing can be done as part of the bedside examination. After checking both ear canals for tympanic perforation and wax, instill 1 mL of water at 30°C. Observe the nystagmus response by using Frenzel goggles or an infrared video system. In this way, dizziness, the duration and intensity of the nystagmus, and visual fixation suppression can be evaluated.

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