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Determinants of rise in blood pressure in normotensive children
Insights
A short-term drop in blood pressure (BP) in children may predict future high BP. This finding suggests early BP fluctuations are important indicators for long-term cardiovascular health.
Area of Science:
- Pediatrics
- Cardiovascular Research
- Public Health
Background:
- Elevated blood pressure (BP) in childhood is a growing concern.
- Understanding predictors of sustained high BP is crucial for early intervention.
- Longitudinal studies on pediatric BP trends are essential.
Purpose of the Study:
- To investigate early indicators of significant systolic blood pressure (SBP) increase over seven years in children.
- To identify factors associated with differing BP trajectories in pediatric populations.
- To explore the predictive value of short-term BP changes on long-term BP development.
Main Methods:
- Comparison of 39 children with large SBP increase versus 78 with small increase, matched for age and gender.
- Analysis of baseline and 7-year follow-up data from a random sample of 596 Dutch children.
- Assessment of weight gain, parental history, cardiovascular reactivity, and urinary sodium excretion.
Main Results:
- Children with a large SBP increase showed greater weight gain during follow-up.
- A larger fall in SBP from initial to 4-week examination was observed in children with a subsequent large SBP rise.
- No significant differences were found in baseline cardiovascular reactivity or urinary sodium excretion.
Conclusions:
- A transient decrease in blood pressure in early childhood may signal future hypertension.
- Weight gain during childhood is associated with increasing blood pressure trends.
- Early BP variability patterns warrant further investigation for predictive value in pediatric hypertension.
Abstract:
Thirty-nine initially normotensive children (25 girls) with a large increase in systolic blood pressure (SBP) over a period of 7 years were compared with 78 children with a small increase, matched for age and gender. They were selected from a random sample of 596 Dutch children who were examined at an initial examination and 4 weeks later, and at yearly intervals thereafter. Body weight, height and Quetelet index at baseline were similar in children with a large rise in SBP and those with a small rise. Children with a large increase had a larger weight gain during follow-up than those with a small rise. Parental blood pressure (BP) and parental history of diabetes mellitus and cardiovascular diseases did not differ between the study groups. Cardiovascular reactivity as assessed by a cold-pressor test at baseline did not differ between the study groups, nor did urinary sodium excretion during follow-up. Total tobacco consumption was larger in those with a small increase. Children with a large rise in SBP experienced a larger fall in SBP from the initial to the 4-week examination. The individual variability of BP over the whole observation period did not differ between the study groups. These observations suggest that a fall in BP after a short follow-up period may be indicative of high BP in the years to come.