急性心肌梗死(AMI)为心内科的常见急危重症,其起病急、病情重、病死率高、并发症多,可诱发心律失常、心力衰竭,还可导致心脏骤停。住院期间大多数患者在存在机体免疫力低下,容易并发院内感染,它会直接导致患者住院时间延长,增加住院费用[1],对左心功能产生不良影响,增加病死率。为讨论AMI患者发生院内感染的危险因素,指导进一步预防和控制AMI患者院内感染的发生率、降低患者的病死率,笔者对2012年10月至2014年10月收治的60例AMI Acute myocardial infarction (AMI) is a common acute and critical illness in cardiology. Its acute onset, serious illness, high case fatality rate and multiple complications can induce arrhythmia, heart failure and cardiac arrest. Most patients in the hospital during the existence of the body immunity is low, easy to complicated with nosocomial infections, it will lead to prolonged hospitalization, increase hospital costs [1], have an adverse effect on left ventricular function, increase mortality. To discuss the risk factors for nosocomial infections in AMI patients and to guide further prevention and control of the incidence of nosocomial infections in patients with AMI and reduce the mortality of patients with AMI, the author of 60 patients with AMI admitted from October 2012 to October 2014