Abstract
Idiopathic sudden sensorineural hearing loss (ISSHL) is a hearing impairment greater than 30dB at three consecutive frequencies developing in less than 3days. The aim of this study was to evaluate VEMPs and caloric testing in patients affected by ISSHL without vertigo. We retrospectively evaluated 35 subjects affected by ISSHL. The audio-vestibular investigation consisted of pure-tone and speech audiometry, impedance, bithermal caloric testing, oVEMPs and cVEMPs. VEMPS were abnormal in 21 patients (60%): cVEMPs in 12 (34.2%) and oVEMPs in 19 (54.2%). 10 patients (28.5%) presented with both c-and oVEMPs altered. Subjects without vestibular involvement showed a significant lower PTA in the affected ear both at admission and at discharge. Recovery rate was significantly higher in group without vestibular involvement. The evaluation of the vestibular system can be useful for predicting the auditory recovery in patients without vertigo also.
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