BACKGROUND - : Elevated blood pressure (BP) levels in childhood have been associated with subsequent atherosclerosis. However, it is uncertain whether this risk is attenuated in individuals who acquire normal BP by adulthood. The present study examined the effect of child and adult BP levels on carotid artery intima-media thickness (IMT) in adulthood. METHODS AND RESULTS - : The cohort consisted of 4210 participants from 4 prospective studies (mean follow-up, 23 years). Childhood elevated BP was defined according to the tables from the National High Blood Pressure Education Program. In adulthood, BP was classified as elevated for individuals with systolic BP ≥120 mm Hg, diastolic BP ≥80 mm Hg or with self-reported use of antihypertensive medications. Carotid artery IMT was measured in the left common carotid artery. High IMT was defined as an IMT ≥90th percentile according to age-, sex-, race-, and cohort-specific levels. Individuals with persistently elevated BP and individuals with normal childhood BP, but elevated adult BP had increased risk of high carotid artery IMT (relative risk [95% confidence interval]) 1.82[1.47-2.38] and 1.57[1.22-2.02], respectively) in comparison with individuals with normal child and adult BP. In contrast, individuals with elevated BP as children but not as adults did not have significantly increased risk (1.24[0.92-1.67]). In addition, these individuals had a lower risk of increased carotid artery IMT (0.66[0.50-0.88]) in compared with those with persistently elevated BP. The results were consistent when controlling for age, sex, and adiposity and when different BP definitions were applied. CONCLUSIONS - : Individuals with persistently elevated BP from childhood to adulthood had increased risk of carotid atherosclerosis. This risk was reduced if elevated BP during childhood resolved by adulthood. © 2013 American Heart Association, Inc.

Item Type:	Refereed Article
Keywords:	atherosclerosis; blood pressure; hypertension; epidemiology; risk factors
Research Division:	Health Sciences
Research Group:	Epidemiology
Research Field:	Epidemiology not elsewhere classified
Objective Division:	Health
Objective Group:	Clinical health
Objective Field:	Clinical health not elsewhere classified
UTAS Author:	Magnussen, CG (Associate Professor Costan Magnussen)
UTAS Author:	Venn, A (Professor Alison Venn)
ID Code:	85849
Year Published:	2013
Funding Support:	National Health and Medical Research Council (1037559)
Web of Science® Times Cited:	161
Deposited By:	Menzies Institute for Medical Research
Deposited On:	2013-08-08
Last Modified:	2017-11-06
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