Abstract: Objective To observe the effect of intraaortic balloon pump (IABP) on tolerance of percutaneous coronary intervention (PCI), life signs of patients with acute myocardial infarction (AMI) during emergency PCI performed.Methods46 AMI patients complicated with or without cardiogenic shock were put on IABP at same time of coronary angiography when emergency PCI performed, and tolerance of PCI, blood pressure, heart rate and immediate death rate of patients were observed before and after operation.Results45 cases had IABP successful and 1 case failed. 40 patients (86.96%) could endure whole emergency PCI process, the total death rate was 10.87%. 66.67% of patients with obvious cardiogenic shock could endure emergency PCI, the death rate was 33.33%; 94.12% of patients without cardiogenic shock could endure PCI treatment and the death rate was 2.94%. 35 cases completed PCI treatment and the successful rate was 85.36%.ConclusionPCI supported by IABP can prevent AMI patients from cardiogenic shock, ease symptoms of patients complicated with cardiogenic shock, improve the tolerance and successful rate of the PCI treatment, and decrease immediate death rate.

Key words: acute myocardial infarction, cardiogenic shock, intraaortic balloon pump, intervention treatment