Tetralogy of Fallot is a congenital cardiac malformation that consists of an interventricular
communication, also known as a ventricular septal defect, obstruction of the right ventricular
outflow tract, override of the ventricular septum by the aortic root, and right ventricular
ภาวะหัวใจห้องล่างซ้ายโตเกิน.