The new conclusions of this study: Efficacy of intra-aortic balloon pump counterpulsation (IABP) in hemodynamic support to patients with cardiogenic shock after myocardial infarction. Remarks on the efficacy of treatment and complication of intra-aortic balloon pump counterpulsation (IABP) in the treatment of cardiogenic shock after myocardial infarction | Abstract of medical PHD thesis: Study on the hemodynamic effect of intra-aortic balloon pump counterpulsation (IABP) therapy in patients with cardiogenic shock after myocardial infarction