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Extracorporeal membrane oxygenation (ECMO) has proven to be an invaluable method of cardiopulmonary support in cases of severe cardiogenic shock. In an emergency, femoral artery and vein cannulation is the easiest and quickest access to initiate support. Often, with peripheral venous-arterial ECMO (VA ECMO), an inadequate reduction in left ventricular end-diastolic pressure (LVEDP) is present secondary to increased afterload from retrograde flow, inadequate RV drainage or persistent bronchial circulation. Elevated LVEDP has been known to be associated with poor myocardial recovery, LV thrombus formation and significant pulmonary edema. A cannulation strategy to achieve partial ventricular unloading is of paramount importance when considering ECMO support following cardiogenic shock to increase the potential for myocardial recovery. We present a novel case of emergent peripheral VA ECMO cannulation with a transdiaphragmatic left ventricular (LV) vent in a 61-year-old, 79kg male with end-stage liver disease and hepatitis B cirrhosis who suffered cardiac arrest during orthotopic liver transplantation.