<unk>  is a disorder that occurs when the fetus’<unk>  valve does not fully open during development. The<unk>  valve is a one way valve that is located between the left ventricle and the aorta, keeping blood from leaking back into the ventricle. It has three leaflets that separate when the ventricle contracts to allow blood to move from the ventricle to the aorta. These leaflets come together when the ventricle relaxes.
Fetal aortic stenosis
Small for gestational age
Large for gestational age
Fetal hydantoin syndrome
Persistent fetal circulation
Fetal warfarin syndrome
Neonatal sepsis
Craniopagus twins