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Abstract

Blood pressure (BP) is variable in children and this could affect BP assessment, but the magnitude of within-visit BP variability (BPV) over consecutive measurements has never been investigated. This study aimed to determine the direction and magnitude of, and factors affecting, within-visit BPV in children and adolescents. BP was recorded among 3047 children (aged 12 years [95%CI 12, 13], males 52%) from the 2011-2013 Australian Health Survey. BPV was defined as the absolute difference (∆SBPABS) between the first (SBP1) and second systolic BP (SBP2) and the overall variability in three measures when available (SBPV). On average, ∆SBPABS was 6.7 mmHg (95%CI 6.3, 7.0) and SBPV was 8.2% (95%CI 7.8, 8.6). ∆SBPABS was greater with higher BP levels but lower with older age. From first to second measurements, SBP decreased in 58% (95%CI 56, 60), did not change in 10% (95%CI 9, 12), and increased in 32% (95%CI 29, 34) of the population.Conclusions: BP is highly variable in children and adolescents, with the magnitude of variability being associated with both age and BP level. SBP increases on repeat measurement in a substantial proportion of the population. The optimal protocol of BP assessment to address this increased BPV needs to be determined.

Item Type:	Article
Authors/Creators:	Veloudi, P and Blizzard, CL and Srikanth, VK and Schultz, MG and Sharman, JE
Keywords:	alarm reaction, blood pressure classification, clinic blood pressure, hypertension guidelines, pediatric hypertension
Journal or Publication Title:	European Journal of Pediatrics
Publisher:	Springer-Verlag
ISSN:	0340-6199
DOI / ID Number:	10.1007/s00431-017-3049-y
Copyright Information:	Copyright 2017 Springer-Verlag GmbH Germany, part of Springer Nature
Related URLs:	UTAS Profile: Blizzard, CL Google Scholar: Schultz, MG UTAS Profile: Schultz, MG Google Scholar: Sharman, JE UTAS Profile: Sharman, JE
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