胸廓内动脉与冠状动脉旁路搭桥术的应用解剖

目的 :为胸廓内动脉与冠状动脉旁路搭桥术提供解剖学资料。材料和方法 :对 32具成人尸体标本的胸廓内动脉和冠状动脉进行了观测。结果 :胸廓内动脉自起点至终端长度为 18 2 5cm ;胸廓内动脉外径在起始处、第 4肋软骨上缘和终端处分别为 3 2mm、2 2mm和 2 0mm ;冠状动脉前室间支、旋支、左缘支、对角支、右冠状动脉、后室间支外径分别为 3 8mm、3 1mm、2 0mm、2 1mm、3 9mm和 2 2mm。结论 :胸廓内动脉与冠状动脉的主要分支外径接近 ,用起点原位的胸廓内动脉移植 ,其长度适用于心前壁和侧壁的血管移植 ;用游离移值 ,其长度足以桥接升主动脉与任何冠状动脉

Applied anatomy of the internal thoracic-coronary arterial bypass grafting

Aim:To provide anatomical data for the internal thoracic artery (ITA)—coronary arterial bypass grafting.Material and Method:The ITA and coronary artery were observed and measured on 32 adult cadavers. Results:The length of the ITA was 18.25cm from its commencement to the end, and its diameter was 3.2mm, 2.2mm and 2.0mm at its commencement, the superior border of the fourth costal cartilage and the end, respectively. The diameter of the anterior interventricular branch, the circumflex branch, the left marginal branch, the diagonal branch, the right coronary artery and the posterior interventricular branch was 3.8mm, 3.1mm, 2.0mm, 2.1mm, 3.9mm and 2.2mm, respectively. Conclusion:The diameter of the ITA approximated to that of the main branches of the coronary artery. Therefore as located graft, ITA was a suitable conduit for coronary revascularzation of the anterior and lateral walls of the heart; As dislocated graft, it would bridge between ascending aorta and any coronary artery.