Initial intra-aortic balloon pump versus Impella support strategies and short-term outcomes in acute myocardial infarction complicated by cardiogenic shock: a MIMIC-IV cohort study

Comparative evidence to guide the initial choice of temporary mechanical circulatory support in acute myocardial infarction complicated by cardiogenic shock remains limited, particularly in real-world intensive care settings. We compared short-term outcomes associated with an initial intra-aortic balloon pump strategy versus an initial Impella strategy using the MIMIC-IV database. We conducted a retrospective cohort study using adult first intensive care unit stays in MIMIC-IV. Acute myocardial