Persistence of elevated blood pressure during childhood and adolescence: a school-based multiple cohorts study.

Leyvraz, Magali; Wahlen, Raphaël; Bloetzer, Clemens; Paradis, Gilles; Bovet, Pascal; Chiolero, Arnaud (2018). Persistence of elevated blood pressure during childhood and adolescence: a school-based multiple cohorts study. Journal of hypertension, 36(6), pp. 1306-1310. Lippincott Williams & Wilkins 10.1097/HJH.0000000000001699

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OBJECTIVE Blood pressure (BP) screening is advocated in children. However, identification of children with sustained elevated BP is difficult because of high BP variability. We assessed the tracking of BP and the persistence of elevated BP across childhood and adolescence. METHODS Three cohorts of children from schools in the Seychelles were examined on two occasions at 3-4-year intervals. Obesity was defined as BMI at least 95th sex-specific, and age-specific percentile. On each visit, BP was based on the average of two readings and elevated BP was defined as BP at least 95th sex-specific, age-specific, and height-specific percentile. RESULTS Data was collected in 4519 children of mean ages of 5.5 and 9.2 years, 6065 of ages of 9.2 and 12.5 years, and 5967 of ages of 12.5 and 15.6 years, respectively. Prevalence of elevated BP was 10% at age 5.5 years, 10% at 9.2 years, 7% at 12.5 years, and 9% at 15.6 years, respectively. Among children with elevated BP at the initial visit, the proportions who had elevated BP at the subsequent visit 3-4 years later was 13% between ages of 5.5 and 9.2 years, 19% between 9.2 and 12.5 years, and 27% between 12.5 and 15.6 years. These proportions were higher among obese children with elevated BP, that is, 33, 35, and 39%, in each cohort, respectively. Tracking coefficients were slightly larger for SBP (range of tracking coefficients: 0.23-0.40) than for DBP (range: 0.19-0.35), and increased with age. By comparisons, tracking coefficients for BMI were much higher (range: 0.74-0.84). CONCLUSION During childhood and adolescence, having an elevated BP on one occasion is a weak predictor of elevated BP 3-4 years later. Tracking is, however, larger in older and obese children than in younger and nonobese children.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Medical Education > Institute of General Practice and Primary Care (BIHAM)

UniBE Contributor:

Chiolero, Arnaud

Subjects:

600 Technology > 610 Medicine & health
300 Social sciences, sociology & anthropology > 360 Social problems & social services

ISSN:

0263-6352

Publisher:

Lippincott Williams & Wilkins

Language:

English

Submitter:

Doris Kopp Heim

Date Deposited:

13 Mar 2018 14:12

Last Modified:

02 Dec 2019 18:41

Publisher DOI:

10.1097/HJH.0000000000001699

PubMed ID:

29517559

BORIS DOI:

10.7892/boris.112898

URI:

https://boris.unibe.ch/id/eprint/112898

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