Left ventricular unloading

Left ventricular unloading refers to clinical and mechanical interventions—rather than an individual molecular species—aimed at reducing the mechanical workload of the left ventricle, typically in patients suffering from severe heart failure, cardiogenic shock, or following myocardial infarction. The aim is to decrease myocardial oxygen consumption, prevent adverse ventricular remodeling, and promote myocardial recovery by reducing left ventricular filling pressures and systemic afterload. Methods for LV unloading include pharmacologic agents such as ACE inhibitors, and more commonly mechanical circulatory support devices like the intra-aortic balloon pump, percutaneous ventricular assist devices (e.g., Impella), and extracorporeal membrane oxygenation (ECMO), among others. This process is monitored by assessing hemodynamic parameters and imaging to optimize myocardial function and prevent heart failure progression.

Other names

Left ventricular decompressionLV unloadingVentricular unloading

Pharmacological unloading: reduction of afterload and filling pressures using vasodilators or ACE inhibitors Mechanical unloading: use of devices such as intra-aortic balloon pump (IABP), Impella, LVAD, ECMO, percutaneous atrial septostomy, direct LV venting