Abstract: Objective To observation the efficacy of emergency PCI therapy within the IABP combined tirofiban through venous in acute myocardial infarction (AMI) merger cardiogenic shock (CS) patients. Methods 26 patients suffered acute myocardial infarction (AMI) merger heart shock (CS), we did emergency PCI therapy supported by the IABP combined tirofiban through venous, and the patients’ tolerance to operation , hemodynamics, cardiac function, thrombus and bleeding complications , mortality were observed. Results Except two cases died of large area of infarction and pump failure, 24 cases were finished the operation of PCI and stent implantation in infarction related artery (IRA), the success ratio is 92.31%. The average time from disease begin to vascular recanalization is 8.13±2.82h; another three postoperative patients died in ICU because cardiac function worse, the total hospitalization mortality is 19.23%. There is no limb artery embolization and deadly bleeding complications occurred (such as intracerebral hemorrhage, internal bleeding, etc.). The hemodynamics of survival cases was obvious improvement than before (P < 0.05), and the cardiac function get better compared with admission (P < 0.05). Conclusion The emergency PCI therapy within the IABP combined tirofiban through venous in acute myocardial infarction (AMI) merger cardiogenic shock (CS) patients, which can greatly improve patients’ tolerance to operation, improve the hemodynamics and cardiac function, reduce the complications and mortality.

Key words: acute myocardial infarction, cardiogenic shock, intra-aortic balloon pump, tirofiban, percutaneous coronary intervention