Key result
Cardiac catheterization six months post-CABG revealed total occlusion of the LIMA and severe stenosis of the saphenous vein graft in the presence of a patent right internal mammary artery.
Case Report (n=1)
No
This case highlights the rare early occlusion of a LIMA graft, potentially due to competitive flow from a patent RIMA, emphasizing the need to consider competitive flow dynamics in multiple arterial grafting.
Early LIMA occlusion may relate to competitive RIMA flow; hypothesis-generating for arterial graft selection in CABG.
Appropriate revascularization decision and proper conduit selection are the most important factors to maintain adequate coronary flow and the function of the coronary bypass grafts after coronary artery bypass graft (CABG) surgery. Left internal mammary artery (LIMA) is considered to be the gold standard choice graft for bypass surgery, as its patency rates are around 90-95%, ten to fifteen years after CABG. Here, we report a case of a 58-year-old man who underwent CABG six months ago and presented for evaluation and management of worsening angina. Cardiac catheterization revealed total occlusion LIMA and severe stenosis of saphenous vein graft (SVG) in the presence of patent right internal mammary artery (RIMA).
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Ibrahim et al. (2019) conducted a case report in Worsening angina post-CABG (n=1). CABG with LIMA, RIMA, and SVG grafts was evaluated on Graft patency at 6 months. Cardiac catheterization six months post-CABG revealed total occlusion of the LIMA and severe stenosis of the saphenous vein graft in the presence of a patent right internal mammary artery.
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