To the Editor: Congenital heart diseases (CHDs) are the most common congenital structural anomalies in China. Most of them are curable after birth. However, some defects progress during fetal period, thus resulting in high neonatal mortality and morbidity. Pulmonary atresia with intact ventricular septum (PA/IVS) during fetal period is partly associated with right ventricle (RV) hypoplasia and its consequent hemodynamic deterioration, which limits the possibility of biventricular (BV) repair after birth. The 1?year survival of PA/IVS live births is around 70％, but the rate of BV outcome is around 30％.