Also, the blockage is located distally and may be of little significance to the overall functionality of the
heart and may be the area of dead
heart cells. A stent or CABG would be of no benefit. Stents can be implanted in grafts.
For some insight, vein grafts are more susceptible to closing up than the Internal Mammary Artery (IMA).The terms single bypass, double bypass, triple bypass, quadruple bypass and quintuple bypass refer to the number of coronary arteries bypassed in the procedure.