Hello. Have any of you worked with coronary artery by-pass patients who experienced blockage of one of the grafts only two months after surgery? One of my relatives had a quintuple by-pass in November and then developed significant left arm pain during walking two months later. The cardiac doc did a repeat cardiac cath and unfortunately discovered that one of the grafts had already developed a partial block! At that time the doc placed a stent in the blocked graft which seemed to restore the circulation to the heart. How common is bypass graft failure? Do such patients have a less positive prognosis than bypass patients who do not experience complications?