At 1 month and 12 months after CABG graft patency rates of clopidogrel group were , respectively , 99.0 % and 96.9 % for the left internal mammary artery ( LIMA ) and 98.1 % and 93.5 % for the saphenous vein grafts ; those of the combination group were , respectively , 98.9 % and 97.8 % for LIMA , and 98.2 % and 96.3 % for saphenous vein grafts .
