Resumen

SILVA C, Mauricio; ARIAS A, Roberto; CARRIEL P, Cristián  y  SARIEGO R, Homero. Evaluation of video Head Impulse Test (v-HIT) in the diagnosis of acoustic neuroma. Rev. Otorrinolaringol. Cir. Cabeza Cuello [online]. 2015, vol.75, n.3, pp.213-219. ISSN 0718-4816.  http://dx.doi.org/10.4067/S0718-48162015000300003.

Introduction: The majority of injuries involving the internal auditory canal correspond to vestibular schwannomas (90%). Within the new diagnostic tests for the vestibular system appears the Head Impulse test and the video head impulse test (v-HIT) which allows the studying of all the semicircular canals. Aim: Compare the v-HIT lateral semicircular canals with classical caloric tests recorded by videonistagmography (VNG) in the behavior of intracanalicular neuroma and evaluate its usefulness as a diagnostic test. Material and method: Eigtheen patients were enrolled with a diagnosis of schwannomas, confirmed by MRI and studied classical caloric tests and v-HIT for horizontal channel. Results: Abnormal results of asymmetry gain and corrective saccades was 13 patients (72%) and hypoexcitability in the caloric test was 9 patients (50%), with a test sensitivity of 72% for vHIT and 50% for caloric test compared with MRI. Conclusions: The v-HIT is a complementary tool to caloric tests and should be included as a diagnostic test within the battery of tests to evaluate the vestibular system in complete form by vestibulogram.

Palabras clave : Schwannomas; v-HIT; vestibulogram.

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