VAI TRÒ CỦA ĐO ẢNH ĐỘNG NHÃN ĐỒ (VNG) TRONG CHẨN ĐOÁN RỐI LOẠN TIỀN ĐÌNH

Abstract

Dizzy or vestibular disorder patients frequently present in neurology, geriatric, general medicine and ENT clinics… and individual specialties may develop a strategy for evaluating symptoms of disequilibrium in their own particular area of expertise, but may either overlook the many causes of dizziness arising in other systems.  The aim of this study was to evaluate the role of VNG, vHHIT and audiological test as a useful tool in evaluating patients with vertigo, to confirm the level of lesion in a patient with vertigo, to differentiate between central and peripheral causes of vertigo and to identify the cause of peripheral vertigo. Patients and method: This is a prospective descriptive study on 668 patients with dizziness or vertigo consulted at ENT Depart, Tam Anh hospital Hanoi from 2018 Nov to 2019, Jul. All patients have been investigated by the battery test included VNG, vHIT and audiological test. Results: 668 patients were included in the analysis (259 men (38,8%), 409 woman (61,2%), the peak of age interval was 50-59 years old. The most frequently diagnosed peripheral disorders diseases were: benign paroxysmal positional vertigo, Ménière syndrome and vestibular neuritis. In 83,5% of cases, mainly affected was the posterior semicircular canal, in 26,8% of the patients – the horizontal semicircular canal, 95 patients (35,5%) having bilateral canals simultaneously involved. Conclusions: Testing of the vestibulo-ocular through videonystagmography and vHIT, tonal vocal audiometry are important for a positive diagnosis and etiological differentiation of vestibular syndromes.