2018 Volume 21 Issue Supplement Pages 40
To comparative study of the distribution and ramification of the coronary artery, in this study, we evaluated 73 fetus pig hearts to investigate the distribution and ramification of the collateral branches of the left coronary artery (LCA) and the right coronary artery(RCA) in fetus pigs, including its origin, number, location, area of distribution. The fetus pigs had less branches of the LCA than humans, even the circumflex artery that reached the posterior interventricular sulcus was only a few numbers. The origin, route, and distribution of the sinuatrial nodal branch and the atrioventricular node artery were recorded, and a greater proportion of the sinuatrial nodal branch or the atrioventricular node artery originated from the RCA than that of those derived from the circumflex artery in both humans and pigs. However, the proportion of the sinuatrial nodal branch or the atrioventricular node artery which originated from the circumflex artery in pigs was less than in humans. Anastomoses between the branches of the anterior interventricular artery and the posterior interventricular artery were a small percentage in pigs, and the information on those anastomoses in literature was sparse. The RCA dominance was the most prevalent pattern, and the incidence of LCA dominance was variably reported in different series, varying from 0 to 15% in humans or pigs. In a word, it was suggested that our findings could be useful for the design of experimental hemodynamic and procedural models.
