“…In case reports and small series of up to 11 pregnancies (13)(14)(15)(16)(17)(18)(19)(20)(21) looking at the outcome of pregnancy in asymptomatic or mildly symptomatic women after an intra-atrial baffle repair, the authors have described symptomatic heart failure requiring therapy during pregnancy (13,14,16,17,19 -21), deterioration in RV systolic function (13,14,16,19,20), development of supraventricular arrhythmias (13,14,18,21), stroke (21), and death (20,21). These results, like our data, confirm that pregnancy after a Mustard operation can be successful but carries a risk of deterioration in functional class, even in women who are asymptomatic before pregnancy.…”