2015303 Activated clotting time post therapeutic anticoagulation with unfractionated heparin in patients undergoing elective percutaneous coronary intervention.LI Jingyi(黎婧怡),et al.Dept Cardiol PUMC&CAMS,Beijing 100005.Chin J Cardiol 2015;43(5):408-411.Objective To investigate the activated clotting time(ACT)level after administration of guideline-recommended