Long-Term Postpartum Cardiac Function and Its Association With Preeclampsia.

Area of Science:

• Cardiovascular Disease Research
• Reproductive Health Science
• Endocrinology

Background:

• Preeclampsia significantly increases long-term cardiovascular disease risk, including heart failure.
• Mechanisms linking preeclampsia to cardiac dysfunction are not fully understood.
• Elevated activin A, a glycoprotein growth factor, is implicated, with previous studies showing associations with impaired cardiac function postpartum.

Purpose of the Study:

• To investigate if elevated activin A levels and impaired cardiac function persist beyond one year after preeclampsia.
• To test the hypothesis that activin A levels remain high and correlate with cardiac dysfunction 10 years post-preeclampsia.

Main Methods:

• Echocardiograms and serum activin A levels were measured in women approximately 10 years after pregnancy.
• Two groups were studied: those with a history of preeclampsia (n=21) and those with an uncomplicated pregnancy (n=25).
• Multivariable analysis adjusted for age, blood pressure, race, and BMI.

Main Results:

• Women with a preeclampsia history showed significantly worse global longitudinal strain, increased left ventricular posterior wall thickness, and interventricular septal thickness compared to controls.
• Elevated serum activin A levels and an increased activin/follistatin-like 3 ratio were observed in the preeclampsia group.
• The association between higher activin A levels and reduced global longitudinal strain remained significant after multivariable adjustment.

Conclusions:

• Preeclampsia is associated with persistent elevations in activin A and impaired cardiac function, specifically reduced global longitudinal strain, up to 10 years postpartum.
• These findings highlight a potential long-term impact of preeclampsia on cardiac health mediated by activin A.
• Further research is warranted to elucidate the precise relationship between preeclampsia, activin A, and sustained cardiac dysfunction.