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Contribution du test de Dumas par vibrations crâniennes au dépistage des troubles de l'équilibre et de l'oreille interne chez l'enfant. Interprétation physiopathologique et applications cliniques

Abstract : Introduction: Sensorineural hearing loss in children is often accompanied by vestibular dysfunction. The evaluation of the vestibular system in the pediatric population requires adapting techniques used in adults. Skull-Vibration-Induced-Nystagmus Test (SVINT), also known as Dumas’ Test, a non-invasive first-line examination test, stimulates both otolith and canal structures and shows instantaneously a vestibular asymmetry in adults. This study aimed to evaluate the use of this test in healthy children and further explore its clinical value in children with hearing loss (HL) amplified with hearing aids (HA) or cochlear implant (CI). Material and Methods: A case-control study compared the results of SVINT, oculomotor testing (saccade and smooth pursuit), caloric test (CaT) and video head-impulse-test (VHIT) and posturography (SOT) in 120 controls to 30 children with HA and 30 with CI, aged 5-17 years old. SVINT was recorded with videonystagmography after very high frequency (VHF 100 Hz) stimulation of mastoids and vertex. Result: SVINT was easy to perform in children and its’ result was not affected by age. However, saccade latency decreased, and smooth pursuit gain increases as age increased. Similarly, SOT data showed a significant age-associated improvement in performance and a gender difference. SVINT was easily performed by the tester and with a sensitivity of 86 % and a specificity of 96 % in detecting unilateral vestibular lesion (UVL). In the case of a bilateral deficit, the SVINT is non-discriminatory. In amplified participants, a UVL was equally detected whether using SVINT, CaT or VHIT. The comparisons between tests permitted to assume that SVINT stimulates the phasic cells (type I), which equip the apices of the ampullary crests and the vicinity of the striola of the utricular and saccular maculae. Conclusion: SVINT is a well-tolerated and useful test to screen vestibular asymmetry in children with HL when combined with other vestibular tests and shows its complementary at very high frequencies. It confirms its role as a “vestibular Weber” test.
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Submitted on : Tuesday, December 15, 2020 - 2:52:56 PM
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Solara Sinno. Contribution du test de Dumas par vibrations crâniennes au dépistage des troubles de l'équilibre et de l'oreille interne chez l'enfant. Interprétation physiopathologique et applications cliniques. Médecine humaine et pathologie. Université de Lorraine, 2019. Français. ⟨NNT : 2019LORR0289⟩. ⟨tel-02559211⟩

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