Heart Rate Variability in Head-Up Tilt Tests in Adolescent Postural Tachycardia Syndrome Patients.

Limitations The study sample in this age group was very small, hence large numerical differences in the parameters did not reach statistical significance.

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Of note, exceptionally few had been vaccinated with Cervarix in the non-POTS group, causing a statistical trend to higher coverage of the vaccine in the POTS group, though.

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There was a slight trend to higher prevalence of previous M. pneumoniae infections in our POTS group than in the group without POTS, but the association was not significant.

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