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Norwood Procedure

In the Norwood procedure (stage 1), a source of pulmonary blood flow is established by inserting a right-sided modified Blalock-Taussig shunt (top). The main pulmonary artery is divided, the distal vessel is closed with a patch, the hypoplastic aorta and proximal pulmonary artery are combined to create a neoaorta, and the ductus arteriosus is ligated (bottom).