A case of the omphalocele. The discussion about the frequent combination of the cardiac malformation, and the observation at the early non-cyanotic period of Fallot's tetralogy.

Even in the severe tetralogy of Fallot the performance of right ventricle is maintained normally without loaded pattern in ECG compensated by the blood flow derived through the ductus arteriosus at early neonatal period. Thereafter, stenotic murmur and reversed shunt appear, because the degree of right ventricular stenosis presumably increases gradually and right ventricular resistance11) become higher than systemic one.