I have congenital heart disease. Can I expect to have a healthy pregnancy?
Pregnancy is safe for most women with congenital heart disease. However, there are some cases in which the mother would be in danger. We can help identify cases where pregnancy might have more risk, such as for women with a Fontan Circulation
How does the heart change during pregnancy?
During pregnancy, a woman’s body makes more blood for the growing baby. Their body adjusts; the heart gets bigger and pumps faster and harder. In women with congenital heart defects, pregnancy may strain the heart and cause it not to work as well.
As the mother’s heart gets ready for giving birth, extra hormones are released that make the heart pump stronger. These hormones can also make the heartbeat abnormal or faster.
Also, the mother’s body prepares for giving birth by making it easier for their blood to clot. Some women with congenital heart disease get blood clots in the circulation more than others. Medications can help manage this.
What can I do to ensure a healthy pregnancy?
The basic rules of health also apply for pregnancy: do not smoke, eat a healthy diet and get enough sleep. It is vital to carefully consider the risk to the baby and the risk to the mother. Women with congenital heart disease need to meet with a doctor who works with congenital heart disease (a CHD cardiologist) to make sure their heart is healthy enough to handle a pregnancy. Some women need a procedure before they get pregnant to help protect their health.
What are the low-, medium- and high-risk categories for a woman with a congenital heart defect?
Examples by category include:
- Low risk: Women born with a hole in the heart that was repaired, like atrial or ventricular septal defects
- Medium risk: Women born with tetralogy of Fallot or transposition of the great arteries that was repaired
- High risk: Women with heart failure problems going into pregnancy, severe aortic stenosis, pulmonary hypertension, cyanosis, or aortic aneurysms
How will you know if everything is on track through my pregnancy? What if there’s a problem?
We check how your heart looks and how you feel throughout your pregnancy to make sure each thing is okay. If there is a problem, we can find it when we check you and treat it as early as possible. We plan ahead to make sure that experts are on hand to care for you and your baby. We work with experts such as obstetricians, surgeons and anesthesiologists.
What does the treatment plan look like?
You will have three plans: a pregnancy plan, a delivery plan, and a plan for after giving birth.
Pregnancy treatment plans involve:
- An echocardiogram to view the heart’s size, strength, valve function and rhythm
- Medications, if needed, to help control any symptoms like high blood pressure or heart failure symptoms, like retaining water due to the increase workload of the heart
Plans for delivery may involve:
- How to manage your heart condition at the time of birth
- Types of anesthesia you can have
- Deciding if vaginal birth or cesarean section delivery is best for you
Your treatment plan after delivery may involve:
- Follow-up appointments with your cardiologist or other experts
Are there risks for my baby?
In a small number of cases (3-4%), a congenital heart disease may be passed on to the baby. Sometimes, a mother’s heart condition may affect her baby. If the mother is unwell during pregnancy, her baby may be born early, be small at birth, or may be medically frail. Some medications taken by mothers may also affect their babies. It is vital to discuss all medications with your doctor.