I'm not all done, I want to go back to some more basics here,
Why did he seizure, that is the question - > Was it hypoxic? We have not yet grasped his Sats, does he look cyanosed? Did the temp cause it?
What is causing this lack of perfusion -> low BP or is it some kind of anemia, chuck him on Capnography, BSL, skin tenting? Hx of seizures?
Obviously you cant answer all these, so in an easyier format,
Sats
BSL
Capnography
Clothes off, cool the pt
Raise those legs for some cerebral perfusion
Lets try get to the bottom of what the cause of the problem (seizure) is!