Abstract
Background
In recent years, pulse wave velocity (PWV) has emerged as a surrogate marker of cardiovascular disease in children with cardiovascular risk factors. The aims of the present study were to identify determinants of PWV in children according to their weight status and to investigate the role of peripheral blood pressure and central hemodynamic parameters in the association between PWV and obesity.
Methods
We included in the study healthy children and adolescents randomly selected from a school-based blood pressure screening study. All participants underwent ambulatory blood pressure monitoring and 24-h pulse wave analysis.
Results
Overweight and obese children had higher 24-h PWV, 24-h peripheral and central systolic blood pressure (SBP), and cardiac output than normal weight ones. Children with both overweight and hypertension presented the highest 24-h PWV values (p < 0.001). Peripheral and central SBP, body mass index (BMI), and hemodynamic parameters, including stroke volume, cardiac output, total peripheral resistance, and cardiac index, were all associated with 24-h PWV. However, in stepwise regression analysis, 24-h peripheral and central SBP and cardiac index, but not BMI, were independent predictors of 24-h PWV. There were statistically significant differences in 24-h blood pressure and hemodynamic parameters among those on the lower and highest 24-h PWV quartile, but there were no significant differences in BMI among 24-h PWV quartile groups.
Conclusions
Arterial stiffness is higher in overweight and obese children in the co-presence of hypertension. Peripheral and central SBP are the main determinants of 24-h PWV independent of weight status.
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Stabouli, S., Kollios, K., Nika, T. et al. Ambulatory hemodynamic patterns, obesity, and pulse wave velocity in children and adolescents. Pediatr Nephrol 35, 2335–2344 (2020). https://doi.org/10.1007/s00467-020-04694-1
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DOI: https://doi.org/10.1007/s00467-020-04694-1