Sisto T
Department of Thoracic and Cardiovascular Surgery, Tampere University Central Hospital, Finland.
Scand J Thorac Cardiovasc Surg. 1990;24(1):7-11. doi: 10.3109/14017439009101814.
The incidence of atherosclerosis in internal mammary, subclavian, carotid and coronary arteries was studied in an autopsy series of 153 patients, and the structure of the internal elastic lamina was compared in internal mammary and radial arteries. Atherosclerotic changes were exceptional in internal mammary artery, whereas only 12-30% of the other arteries were macroscopically normal. The internal elastic lamina of internal mammary artery was found to be significantly less fragmented than that of radial artery, which may partly explain both the lower incidence of atherosclerosis in internal mammary artery and failure of radial artery grafts. As six (3.9%) of the 153 patients had total or almost total subclavian artery occlusion, subclavian angiography is recommended for patients who are candidates for coronary bypass grafting with internal mammary artery.
在对153例患者的尸检系列研究中，观察了胸廓内动脉、锁骨下动脉、颈动脉和冠状动脉的动脉粥样硬化发生率，并比较了胸廓内动脉和桡动脉的内弹性膜结构。胸廓内动脉的动脉粥样硬化改变罕见，而其他动脉只有12% - 30%在宏观上正常。研究发现，胸廓内动脉的内弹性膜碎片化程度明显低于桡动脉，这可能部分解释了胸廓内动脉动脉粥样硬化发生率较低以及桡动脉移植物失败的原因。由于153例患者中有6例（3.9%）存在锁骨下动脉完全或几乎完全闭塞，对于拟行胸廓内动脉冠状动脉搭桥术的患者，建议进行锁骨下血管造影。
