notwithstanding the etiological diversity of this last group , in 31 of these cases ( 70 % ) , some common pathogenetic features may be recognized , basically a failure of the right ventricle of the heart in the fetus or newborn , due to a primary heart condition , to intracardiac tumors , or to obstructive phenomena at the level of the right venous drainage .
C0225883
of
C0018787
heart