How Pregnant Women Can Protect Their Hearts

Pregnancy is a window into a woman’s cardiovascular future, a new report shows.

Smidt Heart Institute cardiologist Janet Wei, MD, is one of the authors of a maternal health report from the National Academies of Sciences, Engineering, and Medicine, a nonprofit organization that reviews published research and provides advice to the U.S. government. Wei, associate professor of Cardiology and Biomedical Sciences, sat down with the Cedars-Sinai Newsroom to explain how pregnancy affects women’s hearts.   

How does pregnancy increase cardiovascular risk?

Pregnancy acts as a stress test for the heart and can uncover, or even worsen, problems like high blood pressure and diabetes. During pregnancy, the heart must work harder to support a growing fetus, and cardiac stress often continues after delivery.

Cardiovascular disease is the leading cause of pregnancy-related death in the U.S., yet most of these deaths are preventable. The National Academies of Sciences, Engineering, and Medicine report on maternal health highlights that although 57% of cardiovascular-related deaths occur between seven days and one year postpartum, preventive care is often focused on the prenatal and immediate postpartum period.

What are two takeaways from the report?

The committee reviewed published medical research and gathered input from a wide range of stakeholders, including clinicians, professional societies, advocacy organizations and patients.

Several takeaways became clear. The report recommends, for example, that clinicians treat pregnant women with chronic hypertension so that their blood pressure is reduced to less than 140/90 millimeters of mercury.  This is because consistently elevated blood pressure during pregnancy can cause pregnancy complications and increase a woman’s risk for developing cardiovascular disease.

The new guidelines also recommended that clinicians caring for patients with postpartum hypertension or other hypertensive disorders give their patients home blood pressure monitors and use a program that allows the patients to report their readings. This way, clinicians can adjust treatment and set clear thresholds for action. 

Cedars-Sinai is already doing this through a postpartum blood pressure monitoring program that sends patients home with a blood pressure cuff and allows them to transmit readings to their care teams. (Kimberly Gregory, MD, MPH, director of the Division of Maternal-Fetal Medicine at Cedars-Sinai, served as an adviser to the National Academies committee that created the maternal health report.)

How often should women visit a doctor in the year after giving birth?

How frequently a woman should see her doctor during the postpartum period depends on her cardiovascular risk. 

Not every woman can easily see a doctor or health specialist—especially in rural areas or when cost is a concern. Therefore, the National Academies report recommends the Health Resources and Services Administration use its telehealth, rural health and maternal health programs to reduce geographic, financial and system barriers to preventive cardiovascular services.

What can pregnant women do to protect heart health?

The National Academies created a resource for women that includes the following advice:

Share your history. Tell your healthcare team your family history of heart disease, especially early heart attacks or strokes, and your pregnancy history, including any past complications.

Keep postpartum follow-up appointments on your calendar. It’s important not to miss these appointments because risk for complications continues through the first year after delivery.

Take warning signs seriously—trust your instincts. If something feels wrong during pregnancy or after birth, seek care right away and tell providers that you’re pregnant or that you gave birth recently.

Read more from Cedars-Sinai Stories and Insights: High Blood Pressure—What Women Need to Know