Sue, so sorry for the terrible , terrible scare you have had with you life. I dont know if you are on pain meds but that is a risk we all take with all of the rsd pain - the warning pains of other illness are so minor in comparison we ignore them.
I am so relivied you are still with us- hope you can take time to realize how close things were and go a little slower with things- it is such a reminder for me. Dont want to be preaching - it kind of frightened me for myself too.
On the IV's I do know that if you have rsd in the limb that they are putting the IV in it will and can cause a terrible flare up- or worse if you have full body- spread it back to an area that might have calmed down.That has happened to me on more than one occasion. When ever possible I have IV's in my " best arm".
Good luck to you rest and get better. Sincerely, CZ