Abstract:
Background: In the field of otolaryngology, dizziness is a common presenting symptom. Benign paroxysmal positional vertigo (BPPV (is considered the most common cause for dizziness. It is caused by otoconial debris that travels from the utricularmacula to one or more SCCs and the ampullary crest is stimulated accidently. The posterior canal BPPV vertigo (p-BPPV) is the most common form.
Methods: Two groups were included in this study. Control group: 17 healthy subjects with normal peripheral hearing sensitivity and study group: 17 patients diagnosed with BPPV. Basic audiological evaluation and vHIT tests were conducted on all the subjects in this study.
Results: As regard pure tone audiogram thresholds across all frequencies, there was no statistically significant difference between the study and control groups. Furthermore, there was no significant difference between the two groups in terms of vHIT gain. Moreover, there was no difference in vHIT gain among the study group before and after the Epley maneuver.
Conclusion: vHIT is an objective quantitative test of VOR function through measuring the gain of the semicircular canals individually but it has on significant role in diagnosis or assessment of BBPV treatment.