had angioplasty with senting aweekback after angina pain. i had undergone bypass surgery 22 years back.out of 4 grafts only swg to lad was patent with 95% blockage.angioplasty was done on swg to lad and lcx. taking aspirin,clopdogrel,atorvastanin,cilostazole,amlodipidine,motolor,ramipril and ismo after the angioplasy. what are the chances of success.what precautions are needed toavoid recurrence of angina.