Wahba A, Offerdal K, von Sommoggy S, Birnbaum D E
Department of Cardiac, Thoracic and Vascular Surgery, Klinikum Regensburg, University of Regensburg, Germany.
Eur J Cardiothorac Surg. 1994;8(5):236-9. doi: 10.1016/1010-7940(94)90152-x.
The inferior epigastric artery (IEA) is a new arterial graft for myocardial revascularization. We examined the inferior epigastric artery, the internal thoracic artery (ITA) and representative sections of the coronary arteries in 45 postmortem examinations, for microscopic signs of atherosclerosis. In addition, a morphometric evaluation of the intima and media of both conduits was performed. The intima of the ITA is significantly thicker, but atherosclerosis is absent. There are fewer fenestrations/mm in the internal elastic lamina (IEL) (4.00 +/- 1.60 versus 4.62 +/- 1.46) of the IEA and the combined thickness of media and intima is lower (0.20 +/- 0.04 mm versus 0.30 +/- 0.06 mm). However, 24% of IEAs showed medial calcification of variable degrees. We conclude that the IEA should not be used routinely for myocardial revascularization until the long-term patency of this graft has been explored.
腹壁下动脉（IEA）是一种用于心肌血运重建的新型动脉移植物。我们在45例尸检中检查了腹壁下动脉、胸廓内动脉（ITA）以及冠状动脉的代表性切片，以寻找动脉粥样硬化的微观迹象。此外，对两根血管的内膜和中膜进行了形态计量学评估。胸廓内动脉的内膜明显更厚，但无动脉粥样硬化。腹壁下动脉内弹性膜（IEL）每毫米的窗孔较少（4.00±1.60对比4.62±1.46），且中膜和内膜的总厚度更低（0.20±0.04毫米对比0.30±0.06毫米）。然而，24%的腹壁下动脉显示出不同程度的中膜钙化。我们得出结论，在探索这种移植物的长期通畅性之前，腹壁下动脉不应常规用于心肌血运重建。
