AIM To investigate the effects of diltiazem on coronary spasm during percutaneous transluminal coronary angioplasty in patients with acute myocardial infarction.

• 目的探讨急性心肌梗死患者经皮腔内冠状动脉成形术中冠脉内注射硫氮艹卓酮治疗冠脉痉挛的效果。