Additional file 5 of Superior vena cava drainage improves upper body oxygenation during veno-arterial extracorporeal membrane oxygenation in sheep

Aorta angiography in IVC-FA. The catheter for contrast medium injection was placed into the descending aorta near the return cannula in the femoral artery. The blood from the return cannula could reach the diaphragm level, but could not supply the upper body. IVC-FA: drainage cannula is placed within the inferior vena cava through the femoral vein and return cannula is in the femoral artery.