ANATOMICAL PECULIARITIES OF BLOOD SUPPLY TO THE HEARTS IN THE COMBINATION OF COMPLETE ATRIOVENTRICULAR CANAL DEFECT AND PULMONARY STENOSIS OR PULMONARY ATRESIA

Abstract

The authors described anatomical peculiarities of blood supply to the heart
on 3 preparations of cardiopulmonary complexes of children who died due to congenital heart disease – the combination of complete atrioventricular canal defect and pulmonary stenosis or pulmonary atresia. In one case, in a child who lived 1 day after birth, complete atrioventricular canal defect was combined with pulmonary atresia, blood flow into the pulmonary circulation was carried out through arterial vessels, one of which departed from the back of the brachiocephalic trunk and connected to the right pulmonary artery, while the second vessel branched off from the lower wall of the aortic arch and attached to the left pulmonary artery.
In the second case, in a 10-day-old boy, complete atrioventricular canal defect was combined with pulmonary infundibular stenosis, which with its branches was hypoplastic against the background of aortic dextraposition. In the latter case, a child with Down’s disease aged 8 months and 24 days, there was a combination of complete atrioventricular canal defect with pulmonary atresia, in which blood entered the pulmonary circulation through the open arterial duct. He connected the lower section of the aortic arch with bifurcation of the hypoplastic pulmonary trunk.
Features of branching and the location of the branches of the right and left coronary arteries on the walls showed that in pulmonary atresia the left-coronary form of blood supply to the heart prevailed, and in pulmonary stenosis – a right-coronary form was established.