PULMONARY ATRESIA WITH BIVENTRICULAR AORTA

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Abstract
An anatomical study of 18 specimens with pulmonary atresia and biventricular aorta were presented. Two anatomical groups are distinguished according to the existence or absence of transposition of the great arteries. Three subgroups are outlined among the cases without transposition of the great arteries (extreme Fallot''s tetralogy), determined by variations in the anatomy of the infundibulum of the pulmonary artery and the pulmonary sigmoid valves. The embryological deviations involved are discussed and the surgical possibilities of each anatomical group are analysed.