Lifetime Adverse Pregnancy Outcome History and Cardiovascular Risk

Area of Science:

• Reproductive Health
• Cardiovascular Disease Epidemiology
• Pregnancy Complications

Background:

• Limited research exists on the link between multiple adverse pregnancy outcomes and long-term cardiovascular disease (CVD) risk.
• Understanding this relationship is crucial for women's lifelong health management.

Purpose of the Study:

• To investigate the association between various adverse pregnancy outcomes and the risk of developing CVD later in life.
• To determine the extent to which post-pregnancy cardiovascular risk factors mediate this association.
• To assess the added value of adverse pregnancy outcomes in predicting premature CVD.

Main Methods:

• Analysis of data from 59,154 participants in the Nurses' Health Study II.
• Self-reported history of gestational diabetes, gestational hypertension, preeclampsia, preterm delivery, and low birthweight.
• Cardiovascular events (myocardial infarction, stroke, coronary revascularization) identified through June 2017.
• Cox proportional hazards models used to estimate associations and mediation effects.

Main Results:

• All adverse pregnancy outcomes were linked to increased long-term CVD risk.
• Gestational hypertension and preeclampsia showed independent associations with CVD.
• Post-pregnancy hypertension, diabetes, and hypercholesterolemia explained 58.4% of the association between first-pregnancy adverse outcomes and later CVD.
• Incorporating adverse pregnancy outcomes provided only modest improvements in CVD prediction.

Conclusions:

• Common adverse pregnancy outcomes, particularly gestational hypertension and preeclampsia, are associated with elevated future cardiovascular risk.
• Subsequent development of hypertension, diabetes, and hypercholesterolemia significantly attenuates this association.
• Enhanced clinical utility requires more nuanced integration of adverse pregnancy outcomes into CVD risk prediction models.