Cadaveric study of septomarginal trabecular arteries

Abstract

ABSTRACTS Aim- To analyze the morphological features of the septomarginal trabecular artery. Methods- A total of 100 cadaveric human hearts were studied by dissection method. The artery supplying the septomarginal trabecula was dissected thoroughly from its origin till it pierced the septomarginal trabecula. The course, diameter at the origin, length of this artery was noted. Presence of myocardial bridges in relation to the LAD and septomarginal trabecular artery was noted. Results- The blood supply of septomarginal trabecula in all cases was derived from one of the interventricular septal branches of the LAD artery. Total 101 arteries were dissected since one of the trabeculae received a dual blood supply from two septal branches. It was predominantly i.e. in 61.4% of cases derived from the 2nd interventricular septal branch of the LAD artery. Conclusion- The origin of the Septomarginal trabecular arteries was constant i.e from left anterior descending (LAD) artery. Usually one of the first four branches of the LAD serves as the artery to the septomarginal trabecula. The artery arises at an obtuse angle to the LAD. The caliber of this artery is proved to be sufficient for application of a stent. The presence of myocardial bridge may affect the artery functionally but less likely morphologically. Considering the development of new hemodynamic procedures for the diagnosis and treatment of cardiovascular diseases, the knowledge regarding this small artery is necessary, particularly in view of recent proposals for the revascularization of this vessel and its visualization on the coronariography.