Let me point you in the direction of "burn resuscitation," which is the general term for the first 24-48 hours of care for a serious burn. It focuses mostly on fluids...we do not actually just pump then full of fluids without monitoring their response...and what to monitor for.
Like any emergency, focus on the ABCs: your patient's Airway was managed...why do you think this could have been necessary? What sequelae from the burn could have made this necessary? Do you think giving someone a lot of IV fluid and pain medicine could affect their airway?
How would you monitor their Breathing? (Honestly, this one is probably beyond the scope of your pathophys class and requires a basic understanding of ventilators to fully grasp, but look up "indications for chest escharotomy" for one line of thought.)
How would you monitor their circulation? Burn patients lose a lot of fluid that can't be measured...how do you know that some of their blood is still perfusing their vital organs *especially* now that the patient has been sedated with diprivan (Propofol...the milky white stuff) and you can't do a full neuro assessment?
If you can answer all that, your next step is trimming it all down to fit on one slide
I am glad you're trying to get a good understanding of this, but it's broader than your experience in the ED led you to believe. (Once you become an RN, take an ABLS class and come work in the burn unit!)