Echocardiography is a diagnostic tool for congenital heart disease.However,it requires skilled specialists to perform it and is a little expensive.Besides,it is too big to move to the bedside easily.USCOM is another newly choice to evaluate hemodynamic values in recent years.This study will compare the hemodynamic values of neonates that are healthy and those with congenital heart diseases and sepsis by using echocardiography and USCOM.