I watched part of an interesting lecture on video the other day. A reserve (or maybe NG) surgeon was talking about a revised treatment plan the military has started using on wounded soldiers with severe blood loss. He is calling it hemostatic resuscitation.

No Ringers or other IV fluids containing crystalloids (whatever that is) are used because it causes swelling.

Mostly they are using packed red blood cells, whole blood, and hypertonic saline. Also something called R factor VII which seems to cost a bunch of money but apparently promotes clotting directly at the wound site(s).

I gather they have started using the same protocol in LA with good results.