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Background Exploring infection on left ventricular function of venoarterial extracorporeal membrane oxygenation (VA-ECMO) Support after acute myocardial infarction with cardiogenic shock (AMI-CS) in pigs.Methods Totally 24 male pigs (34.6±1.3 kg) were randomly divided to three groups,control group,drug therapy group and ECMO group.Myocardial infarction model was created in drug therapy group and ECMO group by ligating coronary artery.When cardiogenic shock occurred,drugs began to use in drug therapy group and ECMO began to work in ECMO group.We collected left atrial pressure (LAP),left ventricular end-diastolic pressure (LVEDP),LVdp/dt and peripheral arterial pressure.The pigs were sacrificed 24 hours after cardiogenic shock.