During the BDG surgery, the surgeon makes an incision in the chest to access the heart and great vessels. The superior vena cava is then detached from the right atrium and connected directly to the right pulmonary artery. This reroutes the deoxygenated blood from the upper body directly to the lungs, bypassing the heart. This method helps to reduce the workload on the single ventricle and improves oxygenation.
