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. 2022 Oct 10:13:997205.
doi: 10.3389/fneur.2022.997205. eCollection 2022.

Potential vestibular pathway impairment in children with recurrent vertigo: An investigation through air-conducted sound and galvanic vestibular stimulation-triggered vestibular evoked myogenic potentials

Xiayu Sun  1   2   3 , Dekun Gao  1   2   3 , Jiali Shen  1   2   3 , Qi Zhu  4 , Lu Wang  1   2   3 , Xiaobao Ma  1   2   3 , Wei Wang  1   2   3 , Xiangping Chen  1   2   3 , Qing Zhang  1   2   3 , Yulian Jin  1   2   3 , Jianyong Chen  1   2   3 , Jun Yang  1   2   3
Affiliations

Potential vestibular pathway impairment in children with recurrent vertigo: An investigation through air-conducted sound and galvanic vestibular stimulation-triggered vestibular evoked myogenic potentials

Xiayu Sun et al. Front Neurol. .

Abstract

Objective: This study aims to investigate the potential vestibular pathway impairment through vestibular evoked myogenic potentials (VEMPs) and to explore the pathophysiological significance of these instrument-based findings in children with recurrent vertigo.

Materials and methods: The clinical data of 21 children (mean age 4.67 ± 1.39 years) diagnosed as RVC who met the inclusion criteria of the Bárány Society and 29 healthy children (mean age 4.83 ± 1.34 years) enrolled as the control group from February 2021 to December 2021 were collected and analyzed retrospectively. All the subjects underwent both cervical VEMP (cVEMP) and ocular VEMP (oVEMP) triggered by air-conducted sound (ACS) and galvanic vestibular stimulation (GVS), respectively. The elicit rate, latency, and amplitude asymmetry ratio (AAR) of ACS-cVEMP, ACS-oVEMP, GVS-cVEMP, and GVS-oVEMP were analyzed.

Results: (1) The elicit rates of ACS-cVEMP and ACS-oVEMP were similar in the two groups (P > 0.05), as well as GVS-cVEMP and GVS-oVEMP (P > 0.05). (2) P1 and N1 latencies of ACS-cVEMP and GVS-cVEMP in the RVC group were longer than those in the control group (P < 0.05). (3) The N1 latency of ACS-oVEMP in the RVC group was shorter than that in the control group (P < 0.05), while there was no significant difference in the P1 latency of ACS-oVEMP (P > 0.05). The N1 and P1 latencies of GVS-oVEMP were not significantly different (P > 0.05). (4) There was no statistical difference in the AAR of ACS-cVEMP and GVS-cVEMP. Although there was an increased AAR of ACS-oVEMP in the RVC group (P < 0.05), the AAR was within the normal range. However, no statistical difference was found in the AAR of GVS-oVEMP in the two groups (P > 0.05).

Conclusion: The latencies of ACS-cVEMP and GVS-cVEMP in children with recurrent vertigo were significantly prolonged compared with those in healthy children, and there was no difference in elicit rates of ACS-cVEMP and GVS-cVEMP, suggesting that there might be potential impairment in the inferior vestibular nerve and the subsequent nerve conduction pathway in RVC.

Keywords: elicit rate; latency; recurrent vertigo of childhood; saccule; utricle; vestibular evoked myogenic potential; vestibular pathway.

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Conflict of interest statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Figures

Figure 1
Figure 1
Typical double-trace records of cVEMPs. (A) Normal ACS-cVEMP. (B) Delayed ACS-cVEMP. (C) Normal GVS-cVEMP. (D) Delayed GVS-cVEMP.
Figure 2
Figure 2
Typical double-trace records of oVEMPs. (A) Normal ACS-oVEMP. (B) Not elicited ACS-cVEMP. (C) Normal GVS-oVEMP. (D) Not elicited GVS-oVEMP.
Figure 3
Figure 3
Comparison of latencies and intervals of cVEMPs between the RVC group and the Control group. (A) Comparison of typical ACS-cVEMP waveforms. (B) Comparison of typical GVS-cVEMP waveforms.
Figure 4
Figure 4
Comparison of latencies and intervals of oVEMPs between the RVC group and the Control group. (A) Comparison of typical ACS-oVEMP waveforms. (B) Comparison of typical GVS-oVEMP waveforms.
See this image and copyright information in PMC

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