After<unk>  completion, blood must flow through the lungs without being pumped by the heart. Therefore, children with high pulmonary vascular resistance may not tolerate a<unk> . Often, cardiac catheterization is performed to check the resistance before proceeding with the surgery. This is also the reason a<unk>  cannot be done immediately after birth; the pulmonary vascular resistance is high in utero and takes months to drop.<unk>  is also contraindicated in those with pulmonary artery hypoplasia, patients with left ventricular dysfunction and significant mitral insufficiency.
Fontan procedure
Omphalotomy
Arterial switch operation
Norwood procedure
Atrial septostomy
Cordotomy
Aortopulmonary window
Blalock–Taussig shunt