Morphological Characteristics of the Artery of the Atrioventricular Node by Congenital Heart Defects

The objective of the work is to study the topographic and anatomical characteristics of the atrioventricular node's artery in complex congenital heart defects. The material for the work was the following: 44 specimens including hearts of fetuses and children of the first three years having congenital defects and 50 specimens of the hearts of a similar age with normal development as the control. A complex of generally accepted morphological methods was used to identify the conductive system of the heart, its blood supply. According to the data obtained given congenital heart defects, the artery of the atrioventricular node arises from an artery, that determines the type of blood supply to the heart. With the full form of the common atrioventricular canal, the presence of the “U” – shaped bend of the coronary artery at the point of departure of the atrioventricular artery from it is inconstant, which is apparently due to the localization of the atrioventricular node in the embryonic position. The intensity of the lateral branches from the artery of the atrioventricular node to the heart partitions is determined by the hemodynamic features with congenital heart defects.