All except one is false regarding tetrology of fallot
In TOF , there is no congestion due to pulmonary oligemia,. So these patients will never develop congestive cardiac failure or cardiomegaly.  In blue TOF  there is silent chest due to equalization of RV and LV pressure .
S2 in single
Blue TOF murmur is loud
These patients will develop congestive cardiac failure in near future
With age  proceeds to cardiomegaly