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Fontan Procedure


The first stage of the Fontan procedure is a bidirectional Glenn procedure (shown below) or a hemi-Fontan procedure (similar except that the superior vena cava is not detached from the right atrium). An anastomosis is created between the superior vena cava and the right pulmonary artery. This connection re-routes blood flow to bypass the right atrium so that blood flows from the superior vena cava directly to the pulmonary artery and then to the lungs to pick up oxygen (middle image). The second stage of the Fontan procedure involves diverting the inferior vena cava flow directly to the pulmonary artery using a baffle (lateral tunnel) created within the right atrium (bottom image).

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