Researchers complete first human trial on viability of enteral ventilation

Oxygenated blood should instead be directly injected into the main artery while deoxygenated blood is sucked out of the main vein and into a scrubber and rebreather apparatus for oxygenation.

Much better in every way.

That's an ECMO machine, and it works. It's also cumbersome and expensive. This kind of thing might easily become a standard resuscitation step in first responders.