Abstract
We present the case of 56-year-old woman who required complex coronary artery bypass grafting for high-risk anomalous left main coronary artery (LMCA) originating from right coronary cusp including conventional reimplantation of the LMCA plus left internal mammary artery (LIMA) graft to the left anterior descending (LAD) and saphenous vein graft (SVG) to the left circumflex (LCx). On subsequent cardiac computed tomography screening and cardiac catheterization, the LIMA graft was occluded after just a few centimeters, but the SVG graft was patent with good run-off into the native LCx and also filled the LAD retrogradely. The reimplanted left main stem demonstrated at least moderate ostial stenosis although pressure wire assessment of this was not significant (fractional flow reserve 0.89), probably due to good retrograde filling of the LAD from the SVG to LCx, therefore, we did not proceed with ostial LMCA stenting. She remains on yearly review with a low threshold for further revascularization should the SVG to LCx develop progressive stenosis. This case illustrates how patients with anomalous LMCA may sometimes benefit from grafting in addition to conventional reimplantation.Electronic supplementary materialThe online version of this article (doi:10.1007/s40119-015-0039-x) contains supplementary material, which is available to authorized users.
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