A veno-arterial extracorporeal membrane oxygenation (VA ECMO) system comprising:a dual lumen drainage cannula comprising:a first drainage tube having a proximal end, a distal end, and a sidewall extending between the proximal end and the distal end； anda second drainage tube in axial alignment with the first drainage tube and having a proximal end, a distal end, and a sidewall extending between the proximal end and the distal end；a blood pump having a pump inlet and a pump outlet, the pump inlet configured for fluidly connecting to the first drainage tube and the second drainage tube；an oxygenator having an oxygenator inlet and an oxygenator outlet, the oxygenator inlet configured for fluidly connecting with the pump outlet； andan infusion cannula configured for fluidly connecting with the oxygenator outlet,wherein the distal end of the first drainage tube has a plurality of first drainage apertures and the distal end of the second drainage tube has a plurality of second drainage apertures.
