Like you said it would have to be taken out immediately, so while it is being taken out just take some blood from the body if it is still good, and for circulating it, you could possibly make a artificial heart and lungs to pump and oxygenate the blood. (I know there is much more to it but I am just a high school student about to go into Bio-medical science so I don't know too much on stuff like this yet.) Like I said this was something random me and my friend thought of. It's a weird idea but interesting to think about.