caloric test

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caloric

 [kah-lor´ik]
pertaining to heat or to calories.
caloric test a test of third, sixth, and eighth cranial nerves. Irrigation of the normal ear with warm water produces caloric nystagmus toward the irrigated side; irrigation with cold water produces similar nystagmus away from that side. Called also oculovestibular test.

Bá·rá·ny ca·lor·ic test

(bah'rah-nē),
a test for vestibular function, made by irrigating the external auditory canal with cool and warm water; this thermal stimulation of the vestibular apparatus results in nystagmus and past-pointing; in vestibular disease, the response may be reduced or absent.

caloric test

Neurology A test of vestibular function in which the ear canal is irrigated with cold and hot water, which often identifies an impairment or loss of thermally induced nystagmus on the involved side; the use of thermic stimuli to induce endolymphatic flow in the horizontal semicircular canal and horizontal nystagmus by creating a temperature gradient between the 2 sides of the canal

caloric test

A test of the balancing mechanisms in the inner ear. Instillation of hot and cold water into the ear causes jerky movement of the eyes (NYSTAGMUS) if the vestibular apparatus is functioning normally. If, however, there is disease of the balancing mechanism (semicircular canals) the nystagmus will be absent or much reduced in extent.

Bárány,

Robert, Austrian-Hungarian otologist and Nobel laureate, 1876-1936.
Bárány alarm apparatus
Bárány apparatus
Bárány box
Bárány caloric test - a test for vestibular function. Synonym(s): caloric test; nystagmus test
Bárány chair
Bárány noise apparatus
Bárány noise apparatus whistle
Bárány sign - nystagmus induced by injecting either hot or cold water into the external ear canal in the caloric test.
Bárány syndrome - the direction of a fall is influenced by changing head position in the presence of equilibrium disturbance.
Bárány test
positional vertigo of Bárány - brief attacks of paroxysmal vertigo and nystagmus due to labyrinthine dysfunction. Synonym(s): benign positional vertigo
References in periodicals archive ?
The sensitivity of the UFT for detecting unilateral vestibular deficit was described as 50.00% when compared to the caloric reflex test alone, and as 70.00% when compared to combined analysis using the head shake and caloric reflex tests, when the gait test was carried out with the same direction of deviation as in the other two tests [13].
The sequence of the tests was as follows: (1) calibration of ocular movements; (2) assessment of spontaneous nystagmus with open and closed eyes; (3) semi-spontaneous nystagmus test; (4) saccadic movement test; (5) pendular nystagmus test; (6) optokinetic test; (7) caloric reflex test.
In the vestibular caloric reflex test, 29.55% (n = 13) of the patients had abnormal results.
As the open-eyes UFT showed no altered results, there was no need to compare the results of the caloric reflex test. The association between the closed-eyes UFT and the caloric reflex test was significant (p < 0.05).
However, the present study demonstrated that the closed-eyes step presented a higher frequency of altered results, as well as an association with vestibular dysfunction as identified by the caloric reflex test.
An association between the UFT and vestibular tests, specifically the caloric reflex test, has already been documented in the case of unilateral vestibular changes [11].
Altered results in the UFT were associated with the closed-eyes test and the caloric reflex test.