病理解剖学研究发现,约20%后降支起源于回旋支,使回旋支闭塞可引起下壁心梗,并且并不少见。冠脉呈左优势型时,即回旋支从左主干分出后,其比一般情况时更加粗大并在左房室沟中延伸,跨过后十字 Pathological anatomy study found that about 20% of descending descending branch originated from the circumflex branch, the circumflex artery occlusion can cause lower wall myocardial infarction, and not uncommon. Coronary artery was the left dominant type, that is, after the spinous branch from the left main branch, the general situation than the more coarse and extend in the left atrioventricular groove, after crossing the cross