翻转胸廓内动脉冠状动脉旁路术的实验研究

目的 研究翻转胸廓内动脉用于冠状动脉旁路术的可行性。方法 对１０具成人尸体胸廓内动脉的特性进行观察，并测量左、右各助间点到ＩＴＡ起点、冠状动脉左前降支中点的距离。结果 于近端切断胸廓内动脉可以保证该动脉逆向供血，血供来源于下位肋间动脉、肌隔动脉和腹壁上动脉。左侧第３肋间以下的各肋间中点，到ＩＴＡ起点处的长度明显长于其到冠状动脉左前降支中点的距离；右侧第４肋间以下的各肋间中点，到ＩＴＡ起点处的长距离

Coronary artery bypass using internal thoracic artery in a reversed way: an anatomical study

Objective To study the feasibility of coronary artery bypass using internal thoracic artery (ITA) in a reversed way. Methods The physical anatomic characteristics of ITA was observed on ten preserved adult cadavers. The distances, from the median point of every intercostal space on both side of the chest, to the beginning point of ITA and the median point of left anterior descending coronary artery, were measured and compared. Results ITA can get blood supply from the inferior intercostal arteries, musculophrenic artery and superior epigastric artery, if its proximal end was divided. On the left side of chest wall, the distance from the median point of the tliird intercostal space to the beginning of ITA is longer than the distance to the median point of left anterior descending coronary artery; On the right side of the chest wall, the distance from the median point of the forth intercostal space to the beginning of ITA is longer than the distance to the median point of left anterior descending coronary artery. Conclusion Coronary artery bypass using ITA in a reversed way is a feasible method.