May Be Caused by

 Common

Arrhythmia

Atrioventricular shunt

Coarctation of aorta

Fetal demise

Fetal heart failure

Hydrops fetalis

Idiopathic

Interruption of aorta

Myocardial disorder

Placental tumor

Posterior urethral valves

Rh isoimmunization

 Uncommon

Biliary atresia

Cytomegalovirus infection

Intestinal obstruction with perforation

Turner syndrome

Twin-to-twin transfusion syndrome

Viral infection