At 30 days , the primary end point ( composite of death , myocardial infarction , or urgent target vessel revascularization ) was similar in both groups [ intracoronary UFH group , 1.0 % ; control group , 2.0 % ; odds ratio ; 0.49 ( 95 % CI : 0.04 - 5.54 ) , P = 0.56 ] .