Relation between functional coronary artery stenosis and graft occlusion after coronary artery bypass grafting

By Hwang HY, Paeng JC, Kang J, et al
Published November 30, 2020

Key Takeaways

In this study, graft patency rates were determined during the 5 years after coronary artery bypass grafting (CABG) according to the functional significance of the coronary artery stenosis, as determined by myocardial single-photon emission computed tomography(SPECT). Researchers here enrolled a total of 295 patients who underwent CABG employing Y-composite grafts based on the in situ left internal thoracic artery, and had preoperative stress/rest myocardial SPECT and 1-year angiographies available. Construction of 769 and 262 distal anastomoses was done to ischemic and nonischemic areas, respectively. Graft occlusion rates of 4.3% (44 of 1031 distal anastomoses) and 5.5% (45/820) were recorded at 1- and 5-year, respectively. The functional significance of coronary artery stenosis, especially when the stenosis degree was not severe, was noted to correlate with the graft occlusion during the 5 years after CABG.

Read the full article on The Journal of Thoracic and Cardiovascular Surgery.

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