Variants of the anatomical structure of the coronary arteries and the left atrium remodeling in patients with different forms of atrial fibrillation

Abstract

One of the reasons leading to dilatation of the left atrium is atrial fibrillation. A retrospective analysis of 136 case histories of patients with various forms of “non-valvular” atrial fibrillation was performed, depending on the shape of atrial fibrillation, the patients were divided into 3 groups. In patients with atrial fibrillation in 62.5%, the source of the atrial branches was the envelope branch of the left coronary artery. Atrial branches originating from the right coronary artery system were identified in 35.8%. In men, atrial arteries occur significantly more often. The results differ from publications, according to which the blood supply of the atria and sinoatrial node from 60 to 75% is carried out by branches departing from the basin of the right coronary artery. The degree of dilatation of the left atrium does not depend on the source of blood supply, but a correlation between the size of the left atrium and the diameter of the branches of the artery of the sinatrial node in the group of patients with paroxysmal atrial fibrillation is traced.