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Yes, but much more expensive and problematic than putting someone on a ventilator. The machine itself gets clogged with clotted blood so thinners are required to delay that breakdown.

And you thought the delirium caused by extended vent usage was exciting, wait till you read about pumphead syndrome!

Yes, it's called extracorporeal membrane oxygenation. The wiki article mentions that it was used on 3% of severe cases in China.

https://en.wikipedia.org/wiki/Extracorporeal_membrane_oxygen...

yes, it is called an ECMO machine and they're very rare and IIRC they're only really used during heart or lung transplant surgeries.