Head-Impulse and Caloric Tests in Patients With Dizziness

Abstract

The head impulse test, when used as a bedside test, and the caloric test are by no means redundant methods. The information obtained form both can be used in combination to obtain a better insight into the degree of vestibular dysfunction of patients.

Testing of the Semicircular Canal Function in Vertigo and Dizziness

“…It is known that the probability of a pathologic bHIT increases with UW and that a UW of 42.5% ensures a pathological bHIT [31,42]. Our data support this finding also for the vHIT.…”

Triple Test as Predictive Screen for Unilateral Weakness on Caloric Testing in Routine Practice

“…According to the results reported by Perez and Rama-Lopez (26), 100% specificity seems to be impossible to achieve. These authors found that 9.5% to 19% of the 265 acute dizziness patients tested by them either had only an abnormal caloric test result or only an abnormal HIT result (26). This may be explained in that each of the 2 tests investigates different frequency ranges: caloric testing has its dominant frequency at 0.0025 Hz, whereas that for HIT is 4 to 5 Hz.…”

Tests used to evaluate dizziness in primary care

“…The signs and symptoms must be described precisely, and the study design must comply with accepted methodologic criteria. Newman-Toker et al 40 Cnyrim et al 28 Perez et al 42 Beynon et al 23 Harvey et al 34 Harvey et al 33 0. …”