Pregnancy complications and cardiovascular disease death: 50-year follow-up of the Child Health and Development...

Area of Science:

• Reproductive Health
• Cardiovascular Disease Epidemiology
• Obstetrics

Background:

• Limited research exists on how combined pregnancy complications predict cardiovascular disease (CVD) death over time.
• This study comprehensively examines the link between multiple pregnancy complications and CVD mortality across five decades in a large cohort.

Purpose of the Study:

• To investigate the association between various pregnancy complications and the risk of cardiovascular disease (CVD) death.
• To identify specific combinations of pregnancy complications that indicate a heightened risk for CVD mortality.
• To explore how this risk evolves with age.

Main Methods:

• Analysis of pregnancy events from 1959-1967 and CVD death data through 2011 in 14,062 women.
• Utilized linkage to California Vital Statistics and National Death Index for CVD death ascertainment.
• Examined risk factors including preexisting hypertension, glycosuria, preeclampsia (early and late-onset), and hemoglobin decline.

Main Results:

• Preexisting hypertension, glycosuria, late-onset preeclampsia, and hemoglobin decline were significant predictors of CVD death.
• Early-onset preeclampsia and delivery of small-for-gestation or preterm infants predicted premature CVD death, with age-dependent risk.
• Combinations like preterm birth with hemorrhage or hypertension, and preeclampsia with preexisting hypertension, conferred substantially increased CVD death risk (4- to 7-fold).

Conclusions:

• Specific combinations of pregnancy complications, including glycosuria and hemoglobin decline, serve as novel predictors for high CVD death risk.
• Obstetricians can leverage these identified pregnancy complications to identify at-risk women for early cardiovascular disease prevention strategies.