Ruth,
So sorry to hear about your recent episode!
I'm glad that you had in hand a copy of the "5-Minute ICU Consult," although it doesn't sound like the doctors followed its advice on *cautious* fluid resuscitation -- or else you wouldn't have needed to be hospitalized for 2 weeks!
You write that you "started to gain 37 liters" and perhaps you meant to write that you gained 37 pounds or kilos, or else that they gave you 37 liters of fluids.
Either way, the proper treatment of an episode of SCLS should *NOT* involve or cause any such massive fluid infusion or weight gain. If you did not suffer from compartment syndromes, you did not need fasciotomies, and you did not have fluid invade your lungs, thereby putting you at risk of death, you were exceedingly lucky, indeed.
Since a 2nd serious episode often leads to a 3rd, you may want to start educating the doctors at your hospital on how to manage that eventuality better in the future. And I echo Jisenhour's advice that if they are going to give you fluids, they should start by giving you IVIG.
On flu and other preventive shots, feel free to have your physician double-check with Dr. Druey at NIH, but as far as I know, there is no evidence that flu shots cause episodes of SCLS, so most doctors encourage their SCLS patients to have all of their vaccinations up to date.
Incidentally, the flu doesn't cause episodes of SCLS, either. Many of us get flu-like symptoms as we enter an episode of SCLS, but that's another matter -- a consequence, and not a cause, of our illness.
I have been getting my flu shots yearly both before and since being on a successful IVIG therapy, and they have helped to keep me free from the flu.