In order to assess the effectiveness and safety of intra-aortic balloon pump counterpulsation (IABP) in hemodynamic support to patients with cardiogenic shock due to myocardial infarction, we conducted the studyStudy on the hemodynamic effect of intra-aortic balloon pump counterpulsation (IABP) therapy in patients with cardiogenic shock after myocardial infarctionwith two objectives: 1.