Preterm birth and long-term maternal cardiovascular health

Area of Science:

• Cardiovascular health
• Reproductive medicine
• Public health

Background:

• Cardiovascular disease (CVD) is a leading cause of mortality globally.
• Preterm birth (PTB) affects approximately 15 million births annually worldwide.
• Understanding the long-term health implications of PTB is crucial for maternal health.

Purpose of the Study:

• To investigate the association between preterm birth (PTB) and cardiovascular disease (CVD) risk.
• To determine if PTB is linked to altered cardiovascular risk factors postpartum.

Main Methods:

• A longitudinal cohort study compared women who delivered preterm (<37 weeks) versus at term (≥37 weeks).
• Evaluated systolic blood pressure (SBP), high-density lipoprotein (HDL), insulin resistance, and lipid profiles at 3 years postpartum.
• Utilized multivariable linear regression, adjusting for covariates like age, race, and prepregnancy BMI.

Main Results:

• Women with PTB exhibited significantly higher SBP (3.99 mm Hg) and lower HDL (-7.01 mg/dL) at 3 years postpartum compared to term deliveries.
• The association between PTB and SBP was partially attenuated when accounting for pre-existing or pregnancy-induced hypertension.
• No significant associations were found between PTB and other assessed postpartum cardiovascular risk factors.

Conclusions:

• Preterm birth is associated with increased cardiovascular disease risk markers, specifically elevated SBP and reduced HDL, by 3 years postpartum.
• These findings suggest PTB may identify women requiring closer cardiovascular monitoring and proactive lifestyle interventions.
• While pre-existing conditions may contribute, PTB serves as a potential indicator for heightened CVD risk management.