Malov A. Anatomic peculiarities of the valvular apparatus and children's heart bloodstream at the stages of prenatal and postnatal ontogenesis in norm and conotruncal anomalies.

The dissertation deals with a complex study of the valvular apparatus structure and children's heart bloodstream in norm and conotruncal anomalies. Differences in distribution of the semilunal valves surface of the great vessels valves in the hearts with conotruncal anomalies have been established. The means of localization correlation of the coronary artery orifices in the children's heart preparations of different ages for the assessment of significant tendencies have been proposed. It has been proved thet the aggregate of the coronary artery orifices in the heart with conotruncal anomalies is authentically lower then in usually formed hearts. The orifices and the intramural tract of the coronary artery proximal segment were mainly located higher than the level of the sinotubular junction near the commissures of the aorta valves or the cjmmon arterial trunk. It has been proved that the vascularization form distribution in the hearts with conotruncal anomalies differs authentically from usually formed htarts. An even form of vascularization prevails in truncus arteriosus communis. A dextracoronary form prevails at transposition and double outlet of the great vessels from the right ventricle. Differences in the types of coronary arteries branching between anomaly and usually formed hearts have been revealed. Thus,if a mixed type of coronary arteries branching prevails in the usually formed preparations of hearts, a major type does in the preparations with the studied conotruncal anomalies.Regularities of chenging in children's cardiac walls at the site of papillary muscles origin in dependence on their thickness of the factors connected with the hemodynamic changes in anomal hearts in comparison wish usually formed heard have been established.