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Experimental evaluation of a common susceptibility to motion sickness and vasovagal syncope in children. | LitMetric

In children, vasovagal syncope (VVS) is the most common cause of syncope and motion sickness (MS) is also very frequent, with many symptoms of an autonomic nature. To study a possible relationship between VVS susceptibility and MS susceptibility in young patients, 21 children (10 boys, 11.3+/-2.6 years) with recurrent syncope or presyncope were explored with a questionnaire concerning their vasovagal symptoms, susceptibility to MS and familial history. A tilt-table test and a dynamic posturography with Equitest (Sensory Organisation Test (SOT), in six conditions) were performed. Children were divided into two groups: A with a positive tilt-table test and particular susceptibility to VVS (n=13/21, six boys) and B with negative tilt-table test. A control group of 30 healthy children (15 boys, 11.4+/-2.4 years) was studied for MS susceptibility and familial history. VVS susceptibility was related to MS susceptibility (MS susceptibility was 69.3% in Group A versus 12.5% in Group B (p=0.0237) and 16.7% in control group (p=0.0028)) and also to SOT scores which are related both to the role of vestibule in equilibrium and to MS susceptibility, with lower values in Group A than Group B (condition 5: 47.9+/-12.3% versus 66.0+/-13.8%, p=0.0189 and vestibular (ratio of conditions 5/1): 51.8+/-12.7% versus 71.3+/-13.5%, p=0.0147). Our study demonstrates, for the first time, a relationship between VVS susceptibility and MS susceptibility in a population of children with a particular susceptibility to VVS. This paradigm may prove useful in better understanding the mechanisms underlying the susceptibility to VVS and MS.

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http://dx.doi.org/10.1016/j.brainresbull.2006.10.013DOI Listing

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