Abstract

Objectives: The benefits of coronary artery bypass surgery depend on lasting graft patency. To aid rational graft selection, the relative long-term merits of radial artery and saphenous vein grafts need to be determined by a gold standard method and with minimal clinically driven selection bias. Methods: The patency rates of various conduits were determined by direct angiography in 76 patients from a cohort of 119 undergoing coronary artery bypass grafting 7.6–12.1 (mean 8.9) years before. Results: 14 out of 76 radial artery and 10 out of 61 saphenous vein grafts were occluded (rates 0.18 and 0.16, respectively). Conclusion: The high long-term patency rate of saphenous vein grafts does not support a preferential use of the radial artery as a coronary artery bypass conduit.

Clinical registration number: ISRCTN23118170

摘要

目的：冠状动脉搭桥手术的益处取决于持久的移植物通畅性。为了帮助合理地选择移植物，need骨和隐静脉移植物的相对长期优点需要通过金标准方法确定，并以最小的临床驱动选择偏倚来确定。方法：通过直接血管造影术对来自119例行冠状动脉旁路移植术的7.6例患者（7.6年前）（平均8.9年前）的76例患者的各种导管的通畅率进行了测定。结果： 76根radial动脉中有14根被堵塞，而61根隐静脉中有10根被堵塞（比率分别为0.18和0.16）。结论： 隐静脉移植物的长期高通畅率并不支持a动脉优先用作冠状动脉旁路导管。

临床注册号：ISRCTN23118170