Buy lots of Oral Rehydration salts. and that is only hope is if your infected. Try and take in as much fluids with ORT as you leach out of your orifices.
Also 500ml bags of Hextend and IV start kits to treat hypovolemic shock, this provides volume expansion and is equivalent to about 3 liters of ringers. (if things turn for the worse)
burn pit, gasoline if the above two fail.
Heck, I was thinking just plain old albumin injectible via indwelling central line. NS/RL drip with 25g albumin (100cc prepack of 25% albumin). It can work, unless you're pouring fluids out of everywhere faster than you can pump them in, and I've been there with that before.
Burn Unit, MCG (Med. College of GA in Augusta). Back in 1983. Spent most of a night shift pumping dozens upon dozens of bottles of 25% albumin into a girl who was essentially a 90%+ burn victim and was "slow coding" that night. The attending, a resident with two days left before completing his residence, vainly tried to keep the girl alive until 7AM---shift change---when the new resident would assume the case, and assume having to do a complete summary write up of her care if/when she died.
We worked for hours and he almost got his wish, but she expired at 6AM.
Never forget it tho. Damned stuff was stickier than honey after a while. Swan-Ganz catheter, two ports blasting in RL/NS and one port for me.....spike the bottle of albumin onto the port, blow air into the vent, forcing the albumin immediately out the bottle into the line and into the patient. I had trays and trays of empty albumin bottles littering the floor around her bed. We emptied out our pharmacy's stock and had to go next door to the VA hosp. to raid their stock.
In the end, it was gruesome. Almost as gruesome as the guy who got brought into our ER approx. 50% covered in hot, congealing tar.....like road tar.