How does Marfan syndrome affect pregnancy planning?

What does the evidence say about marfan syndrome during pregnancy?

1. The aorta can be vulnerable to enlargement or tearing in Marfan syndrome, and pregnancy adds cardiovascular strain. Before conception, discuss current imaging and whether further assessment or an intervention is needed. A previous dissection makes expert risk counseling particularly important. 1
2. A pregnancy heart team considers aortic dimensions and their change over time, valve problems, previous dissection or repair, and blood-pressure management. Imaging surveillance and delivery planning are individualized. A single measurement without the broader history does not provide a complete risk estimate. 2
3. Marfan syndrome is associated with variants in FBN1 and generally follows an autosomal dominant inheritance pattern. Genetic counseling can explain the family result, testing options and the limits of predicting severity in a child. Severity can vary within a family. 3
4. The GenTAC registry documented aortic complications during pregnancy and especially after delivery. This observational evidence supports continued postpartum attention, but its complication rates should not be used as a personal prediction for every patient with Marfan syndrome. 4
5. Sudden severe chest, back or abdominal pain, faintness or breathing trouble needs emergency care. Mention Marfan syndrome and pregnancy or recent delivery immediately. Do not dismiss new severe pain as a normal pregnancy musculoskeletal symptom. 5

Planning with a pregnancy heart team

• First trimester. Review aortic imaging, previous surgery and medicines before conception when possible.
• Second trimester. Keep the agreed imaging and maternity follow-up schedule throughout pregnancy.
• Third trimester. Arrange postpartum surveillance before discharge and know the emergency symptoms.