Levo-Transposition of the great arteries
Levo-Transposition of the great arteries is an acyanotic congenital heart defect in which the primary arteries ( the aorta and the pulmonary artery ) are transposed , with the aorta anterior and to the left of the pulmonary artery; the morphological left and right ventricles with their corresponding atrioventricular valves are also transposed . 
<triplet> acyanotic <subj> congenital heart defect <obj> subclass of <triplet> aorta <subj> arteries <obj> subclass of <triplet> pulmonary artery <subj> arteries <obj> instance of