Off-pump onlay-patch grafting using the left internal mammary artery for a diffusely diseased left anterior descending artery: in-hospital and mid-term outcomes

BackgroundThe aims of this study were to evaluate the in-hospital and mid-term outcomes of the off-pump onlay-patch grafting procedure using the left internal mammary artery (LIMA) for a diffusely diseased left anterior descending artery (LAD) and to identify the risk factors for postoperative LIMA