胸廓内动脉组织学和应用解剖学研究

HISTOLOGICAL AND ANATOMICAL STUDIES ON THE INTERNAL THORACIC ARTERY

本研究观测了40具成人尸体的胸廓内动脉,并对10条胸廓内动脉进行了组织学检查。结果表明,胸廓内动脉起点原位移植适用于心脏前、后壁冠状动脉血管重建,不适于心脏后壁的冠状动脉。胸廓内动脉营养血管仅存在于动脉外膜,未穿入中膜。提示动脉中层营养完全来自管腔,说明胸廓内动脉游离移植不会发生缺血损伤,进一步证实该动脉游离移植完全适用于冠脉旁路术。

The internal thoracic artery (ITA) was investigated on 40 adult cadavers by means of morphometry, and histological examination was also performed on 10 ITA. The results suggested that the ITA pedicle graft was suitable for coronary revascularization of the anterior and lateral walls of the heart, but unsuitable for the posterior wall. The vasa vasorum was confined to the adven-titia and did not penetrate the media of ITA. This indicated that the media is nourished entirely from the lumen, and suggested that using the ITA as a free graft would not subject the arteial wall to is-chemic injury. Therefore, free ITA graft is very suitable for coronary bapass.