ObjectiveTo investigate clinical effect of emergency percutaneous coronary intervention with intra aortic balloon pump applied in acute myocardial infarction complicated with cardiogenic shock.Methods86 patients with cardiogenic shock complicated with acute myocardial infarction treated in our hospital from October 2014 to October 2016 were selected and they were divided into two groups according to the random number table method.43 patients

received：emergency percutaneous coronary intervention were selected as control group.43 patients received emergency percutaneous coronary intervention with intra aortic balloon pump were selected as observation group.Change of clinical indicators before and after treatment,complications,prognosis were compared between two groups.ResultsAfter treatment,mean arterial pressure,cardiac output,left ventricular ejection fraction,cardiac index,stroke volume increased in two groups(P＜0.05).Cardiac troponin,creatine kinase isoenzyme,heart rate decreased in two groups(P＜0.05).Mean arterial pressure,cardiac output,left ventricular ejection fraction,cardiac index,stroke volume in observation group were higher than control group (P＜0.05).Cardiac troponin,creatine kinase isoenzyme,heart rate,the total incidence rate of complication in observation group were lower than control group.Prognosis in observation group was better than that in control group (P＜0.05).ConclusionEmergency percutaneous coronary intervention with intra aortic balloon pump has significant effect int reatment of cardiogenic shock complicated with acute myocardial infarction,which can significantly improve clinical symptoms and signs and it also has high safety.