Glenn Procedure: oxygen-poor blood coming back from the top half of the body is diverted directly into the lungs instead of flowing back into the heart before going to the lungs.
Heart defect: Tetralogy of Fallot (ventricle septal defect, enlarged aorta, pulmonary stenosis, right ventricular hypertrophy) with pulmonary atresia and pulmonary artery hypoplasia.
Tetralogy of Fallot (ToF) is a combination of these four heart defects: large VSD, enlarged aorta, pulmonary stenosis, and hypertrophy.
This heart also depicts hypoplasia of the left pulmonary artery.