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Maternal educational level and blood pressure, aortic stiffness, cardiovascular structure and functioning in
Selma H Bouthoorn1, Frank J Van Lenthe, Layla L De Jonge
1The Generation R Study Group, Erasmus Medical Centre, Rotterdam, the Netherlands.
Insights
Socioeconomic disparities in blood pressure begin in childhood. Children of less educated mothers have higher blood pressure and altered heart function, linked to body mass index and physical activity.
Area of Science:
- Pediatric cardiology
- Public health
- Socioeconomic determinants of health
Background:
- Low educational attainment is linked to adverse cardiovascular outcomes in adults.
- Socioeconomic disparities in cardiovascular health may originate in childhood.
- The study addresses the gap in understanding early-life socioeconomic influences on cardiovascular health.
Purpose of the Study:
- To investigate the association between maternal education level and cardiovascular parameters in 6-year-old children.
- To identify potential underlying factors contributing to these associations, such as body mass index and physical activity.
- To explore early-life origins of socioeconomic inequalities in cardiovascular health.
Main Methods:
- Prospective cohort study of 5,843 children in the Netherlands.
- Maternal education assessed at enrollment.
- Measurements at age 6 included blood pressure, carotid-femoral pulse wave velocity, left atrial and aortic root diameters, left ventricular mass, and fractional shortening.
Main Results:
- Children of mothers with low education exhibited higher systolic and diastolic blood pressure compared to children of highly educated mothers.
- Child's body mass index (BMI), maternal BMI, and physical activity were key explanatory factors for blood pressure differences.
- Maternal education showed a negative association with fractional shortening, influenced by blood pressure and child's BMI; no other socioeconomic gradients were found in arterial or cardiac measures.
Conclusions:
- Socioeconomic inequalities in blood pressure are evident in early childhood.
- Elevated fractional shortening in children from lower socioeconomic backgrounds may indicate early cardiac adaptation to higher blood pressure and BMI.
- Interventions targeting child BMI reduction and increased physical activity in lower socioeconomic groups are recommended.
Background:
In adults, low level of education was shown to be associated with higher blood pressure levels and alterations in cardiac structures and function. It is currently unknown whether socioeconomic inequalities in arterial and cardiac alterations originate in childhood. Therefore, we investigated the association of maternal education with blood pressure levels, arterial stiffness, and cardiac structures and function at the age of 6 years and potential underlying factors.
Methods:
The study included 5,843 children participating in a prospective cohort study in the Netherlands. Maternal education was assessed at enrollment. Blood pressure, carotid-femoral pulse wave velocity, left atrial diameter, aortic root diameter, left ventricular mass, and fractional shortening were measured at the age of 6 years.
Results:
Children with low educated (category 1) mothers had higher systolic (2.80mm Hg; 95% confidence interval (CI) = 1.62-2.94) and diastolic (1.80mm Hg; 95% CI = 1.25-2.35) blood pressure levels compared with children with high educated (category 4) mothers. The main explanatory factors were the child's body mass index (BMI), maternal BMI, and physical activity. Maternal education was negatively associated with fractional shortening (P trend = 0.008), to which blood pressure and child's BMI contributed the most. No socioeconomic gradient was observed in other arterial and cardiac measurements.
Conclusions:
Socioeconomic inequalities in blood pressure are already present in childhood. Higher fractional shortening among children from low socioeconomic families might be a first cardiac adaptation to higher blood pressure and higher BMI. Interventions should be aimed at lowering child BMI and increasing physical activity among children from low socioeconomic families.
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