sir, my bypass operation was done on 5th march 2009, but i am again in trouble doctors recommended me foe ct-angiography which was done on 6th jan.2011 and result is as under. 1,severnativethree vessel cornory artery disease. 2, patent SVGtoobtuse marginal branch.3.stump oh a blocked SVG seen.4 fair LVsystolicfunction. sir pl. help me and tell me about my treatment, thanks