Which is the best time to perform balloon valvuloplasty in critically fetal aortic stenosis: Prenatally or after birth?

ABSTRACT

Fetal aortic valvuloplasty may prevent the progression of severe fetal aortic stenosis to hypoplastic left heart syndrome at birth. Since it is an high risk procedure a careful selection of fetuses that can benefit from the prenatal treatment instead of waiting for postnatal intervention.