What are monothermal caloric irrigations in electronystagmography (ENG)?

Updated: Aug 06, 2019
  • Author: Angela G Shoup, PhD; Chief Editor: Arlen D Meyers, MD, MBA  more...
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Answer

Answer

Some clinics use monothermal caloric irrigations as a screening test for patients with normal oculomotor, positional, and positioning test results. For the monothermal screening test, only warm caloric irrigations are conducted. The warm stimulus has a stimulatory effect on the labyrinth and thus may increase the likelihood of revealing residual function. [18]

If the responses from each ear are equivalent and robust, testing is terminated. If a difference in responses exists between the 2 ears or the responses are less than 20 degrees per second, bithermal caloric testing is conducted.


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