Related Experiment Video
Updated: Jun 22, 2026

Measuring Cardiac Autonomic Nervous System (ANS) Activity in Children
Published on: April 29, 2013
Predictors of higher blood pressure in a clinical setting in normotensive children: a prospective study
Maristela Bohlke1, Fernanda Dullius, Juliana Menezes
1Nephrology Department, Catholic University of Pelotas, Pelotas, Brazil. mbohlke.sul@terra.com.br
Insights
Lower birth weight and excess weight in children are linked to higher blood pressure (BP) readings in clinical settings. These factors, along with younger age, predict elevated BP in pediatric patients.
Area of Science:
- Pediatric Medicine
- Cardiovascular Health
- Public Health
Background:
- Elevated blood pressure (BP) in children is a growing concern.
- Identifying predictors of BP in pediatric populations is crucial for early intervention.
- The white-coat effect, a rise in BP in clinical settings, warrants further investigation.
Purpose of the Study:
- To assess predictors of higher blood pressure (BP) in normotensive children within a clinical setting.
- To investigate the association between birth weight, BMI, age, and BP in pediatric patients.
- To explore the relationship between intrauterine factors and BP response to medical consultation.
Main Methods:
- Prospective cohort study of 443 children aged 3-12 years in Southern Brazil.
- BP measurements taken in a clinical setting, with home evaluations for elevated readings.
- Statistical analysis to identify associations between BP percentiles and factors like BMI and birth weight.
Main Results:
- Systolic BP percentile was associated with Body Mass Index (BMI) and birth weight.
- Diastolic BP percentile was associated with birth weight, age, and BMI.
- Weight excess, low birth weight, and younger age were linked to higher BP in normotensive children.
Conclusions:
- Lower birth weight and weight excess are significant predictors of higher BP in children in clinical settings.
- Early life factors, including intrauterine conditions, may influence BP response to medical encounters.
- Findings suggest a potential link between low birth weight and an increased white-coat effect in pediatric patients.
Abstract:
This study was designed to assess the predictors of a higher blood pressure (BP) in a clinical setting in a prospective cohort of normotensive children recruited in an outpatient pediatric clinical setting in Southern Brazil. The study evaluated 443 children 3-12 years of age. If the mean value of BP was greater than the 95th percentile for age, sex and height in the medical setting, children were scheduled to other two evaluations at home. The systolic BP percentile in the clinical consultation was associated with BMI and birth weight. The diastolic BP in the clinical consultation was associated with birth weight, age, and BMI. Weight excess, low birth weight and younger age were associated with a higher BP in normotensive children seen in a clinical setting. To our knowledge, this is the first study to describe the association between lower birth weight and a greater BP response to medical consultation. Our finding suggests that the tendency to higher white-coat effect is determined, at least to some extent, in intrauterine life.
Related Concept Videos
Blood Pressure
The average BP in an adult is typically around 120/80 mmHg (millimeters of mercury). In this measurement, the numerator (120) indicates the systolic pressure, which is the pressure in the arteries during the contraction of the heart's ventricles as blood is expelled. The denominator (80) represents the diastolic...
Blood Pressure
Factors affecting Blood pressure
Physiological Factors:
Hypertension III: Clinical Manifestations and Diagnostic Studies
Hypertension and Regulation of Blood Pressure
Special considerations while measuring blood pressure
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.