Abstract 11940: Aortic Complications Associated With Pregnancy in Marfan Syndrome: The NHLBI GenTAC Registry

Background: Definition of pregnancy risk in women with Marfan syndrome (MFS) has been confounded by ascertainment bias, lack of imaging data, small sample size, and inclusion of women without a known MFS diagnosis before a pregnancy complication. To lessen these limitations, we analyzed MFS women participating in the large GenTAC Registry. Results: Among 184 women in whom pregnancy information was available, 94 women (51%) had a total of 227 pregnancies (average 2.5, range 1-6). Compared to MFS women who never became pregnant, those with pregnancies were older at time of MFS diagnosis (27 vs. 13 years, p<0.0001) and at time of GenTAC enrollment (47 vs. 37 years, p<0.0001). When comparing ever-pregnant to never-pregnant women with MFS at the time of registry entry, higher historical rates of aortic dissection and prophylactic proximal aortic surgery were observed (24/94 [25.5%] vs. 13/90 [14.4%], p=0.068 and 15/94 [16.0%] vs. 4/90 [4.4%], p=0.014; respectively). Among the 94 MFS women with pregnancies, 10 ...