Patients With Left Main Coronary Artery Vasospasm Inadvertently Undergoing Coronary Artery Bypass Grafting Surgery

[...]we sought to identify patients with LMCA vasospasm who were falsely diagnosed with LMCA atherothrombotic disease and then underwent CABG. Age (Mean 63 yrs) Sex (Men 62.5%) Indication for Initial Angiography TVD LMCA Stenosis LMCA Before CABG (Mean stenosis 64%) LMCA After CABG (Mean stenosis 5.3%) Yrs Since CABG (Mean 4.8) LIMA (Occluded in 33.3%) 71 M UA negative ostial 70 20 6 occluded 48 F angina negative ostial 50 0 2 occluded 75 F UA negative ostial 90 0 3 NA 54 M UA negative ostial 60 0 4 patent 67 F angina negative unknown 60 0 8 patent 51 M UA negative distal 40 0 6 patent 49 M UA positive unknown 60 0 5 patent 64 M UA negative ostial 50 0 10 occluded 64 M angina positive mid-distal 70 0 1 patent 71 M NSTEMI positive ostial 80 0 6 patent 79 F AS negative ostial 70 0 3 patent 79 F angina negative ostial 50 0 3 patent 46 M NSTEMI positive diffuse 65 0 6 patent 64 F UA negative unknown 70 20 0 occluded 68 M UA positive unknown 80 20 7 occluded 57 M UA positive diffuse 60 25 7 patent Table 1 Cardiac Catheterization Data Before and After CABG in Patients With Insignificant LMCA Stenosis at Repeat Angiography AS = aortic stenosis; CABG = coronary artery bypass graft; LIMA = left internal mammary artery; LMCA = left main coronary artery; NSTEMI = non-ST-segment-elevation myocardial infarction; TVD = triple-vessel disease; UA = unstable angina.