Effects of Obesity and Hypertension on Pulse Wave Velocity in Children

Area of Science:

• Cardiovascular Health
• Pediatric Health
• Biomarkers

Background:

• Pulse wave velocity (PWV) is a key indicator of arterial stiffness.
• Previous research on the relationship between childhood obesity and PWV has yielded conflicting results.
• Understanding factors influencing arterial stiffness in children is crucial for early cardiovascular risk assessment.

Purpose of the Study:

• To investigate the independent and combined effects of obesity and hypertension (HTN) on PWV in children.
• To determine if race influences PWV in pediatric populations.
• To analyze the relationship between age and PWV in children.

Main Methods:

• Carotid-femoral PWV was measured in 159 children aged 4-18 years.
• Participants included healthy children, those with obesity, hypertension (HTN), or both.
• Statistical analyses were performed, including adjusted models for children aged 10 years and older.

Main Results:

• Mean PWV increased with age but showed no significant difference based on race or sex.
• Children with hypertension (4.9±0.7 m/s), obesity (5.0±0.9 m/s), and combined obesity-HTN (5.2±0.6 m/s) had significantly higher PWV compared to healthy children (4.3±0.7 m/s) (P<.001).
• Both obesity and HTN were found to independently increase PWV.

Conclusions:

• Obesity and hypertension are significant independent risk factors for increased arterial stiffness in children aged 10 and older.
• The study did not find evidence of a higher PWV in African American children compared to Caucasian children.
• These findings highlight the importance of managing obesity and hypertension in pediatric populations to mitigate cardiovascular risk.