Additional file 9 of Superior vena cava drainage improves upper body oxygenation during veno-arterial extracorporeal membrane oxygenation in sheep

Vena cava angiography in IVC-FA. The contrast medium was from the superior vena cava. When the animals were supported with IVC-FA, the contrast medium entered the right atrium. IVC-FA: drainage cannula is in the inferior vena cava and return cannula is in the femoral artery.