Catheter-Oriented Unloading and Recovery With a Left Ventricular Assist Gear: Efficacy in Post Cardiotomy Cardiogenic Shock

Inclusion Criteria: * 18≤Age≤80, any sex. * Failure to wean from CPB or refractory cardiogenic shock after cardiac surgery. Failure to wean from CPB is defined as failed to discontinue CPB or post-weaning CI \<2.2L/min/m2 + PCWP \>15mmHg, despite optimal pre-weaning management and receiving at least one high dose inotrope. Refractory cardiogenic shock is defined as a condition that occurs despite adequate fluid status and meets all the following criteria: ① CI\<2.2L/min/m2 + PCWP\>15mmHg despite receiving at least one high dose inotrope or IABP; OR SBP \<80mmHg or MAP\<50mmHg despite receiving at least one high dose intrope + high dose norepinephrine or IABP. * Presence of at least one signs indicating hypoperfusion: decreased mentation; cold, clammy, ashen or cyanotic extremities or skin or livedo reticularis; urine output\<30ml/h or 0.5ml/kg/h; or lactate\>2mmol/L or metabolic acidosis. * Patient has signed the informed consent form. Exclusion Criteria: * Body surface area\>2.5m2. * Presence of any cardiac assist device (other than an IABP). * Right ventricular failure. * Evidence of any vascular disease or anatomy precluding placement or deployment of the device (e.g. severely calcified vessel). * Evidence of ventricular thrombus. * Moderate or severe aortic valve insufficiency/stenosis, or severe aortic valve calcification. * Presence of mechanical aortic valve or cardiac contractile device. * Obstructive, hypertrophic cardiomyopathy. * Presence of uncorrected v…