Basal and post-ischemic vascular compliance in children/adolescents born small for gestational age

Area of Science:

• Pediatric cardiology
• Vascular biology
• Developmental origins of health and disease

Background:

• Intrauterine growth restriction (IUGR) is linked to later chronic disease susceptibility, including hypertension.
• Endothelial dysfunction and arterial stiffness are early indicators of cardiovascular disease (CVD) development.
• This study investigates vascular compliance in children born small for gestational age (SGA) compared to appropriate for gestational age (AGA) subjects.

Purpose of the Study:

• To assess vascular compliance in SGA children and adolescents.
• To compare vascular function between SGA and AGA pediatric groups.
• To identify early signs of arterial wall dysfunction in SGA individuals.

Main Methods:

• Pulse wave analysis (CR 2000 HDI) was used to monitor blood pressure, vascular resistance, and compliance.
• The study included 82 children-adolescents (52 SGA, 30 AGA).
• Measurements were taken at the radial artery before and after 3 minutes of brachial artery ischemic stress.

Main Results:

• SGA children/adolescents exhibited significantly higher basal systolic and diastolic blood pressure and vascular resistance.
• Both large and small vessels were stiffer in the SGA group.
• Following ischemia, SGA subjects showed an exaggerated vascular response with greater blood pressure reduction and increased vessel elasticity.

Conclusions:

• SGA children/adolescents display early signs of arterial wall functional disorders.
• These findings highlight potential long-term CVD risks associated with SGA.
• Non-invasive techniques are crucial for evaluating vascular function in at-risk pediatric populations.