冠状动脉造影正常的急性ST段抬高型心肌梗死临床分析

目的研究在急性ST段抬高型心肌梗死(STEMI)患者中冠状动脉(冠脉)造影正常的发生率、临床特点和随访结果。方法选择2006年3月至2010年10月间收住沧州市中心医院的648例STEMI患者,分析其临床和冠脉造影结果,相关的冠心病危险因素和随访结果。结果 648例STEMI患者中有56例冠脉造影正常,占8.6%。该组患者中年龄较轻、大量吸烟者居多,多无心绞痛、糖尿病、高血压及高脂血症等病史,且多有情绪激动、过度劳累等明确诱因。完成随访的51例患者中,随访期间无患者发生急性心肌梗死或心原性死亡。结论 STEMI可以发生于冠脉造影正常的患者中,冠脉内皮受损继而引起冠脉痉挛或急性血栓形成并血栓自溶是其主要的发病机制;随访发现部分患者既使口服他汀类及钙拮抗剂等药物来稳定内皮、预防痉挛,仍有心绞痛症状发作,应引起重视。

Clinical analysis on acute ST-segment elevation myocardial infarction in patients with normal coronary angiography

Objective To investigate the morbidity,the clinical characteristics and follow-up outcomes of acute ST-segment elevation myocardial infarction( STEMI) with normal coronary angiography ( CAG) . Methods The clinical characteristics and results of CAG and some correlated risk factors of 648 patients with STEMI enrolled from March 2006 to October 2010 and during the follow up were analysed. Results The patients with STEMI and normal CAG accounted for 56 / 648( 8. 6% ) ,most of whom were young patients and smokers. Most patients had strenuous exertional working,and free of angina pectoris, hypertension,diabetes mellitus and hyperlipidemia ( P < 0. 01) . The clinical follow-up was completed for 51 patients and during the follow-up period,no acute myocardial infarction or cardiogenic death occurred. Conclusions STEMI might happen in patients with normal coronary arteries. The coronary spasm or acute thrombosis and auto-thromobolysis on the basis of coronary endothelium lesion may occur in them. The follow-up shows some patients have recurrent angina even though they continue the use of statins and calcium antagonists.