You have to be careful with the administration of D50 to a stroke patient due to the fact you don't know what kind of CVA they are having.
Remember what happens to the surrounding tissues if your IV infiltrates while pushing D50? It is necrotic to the surrounding tissue. Now apply that same principle to someone that is having a hemmorhagic stroke(they have a leak in their brain)..what is that D50 going to do once it enters the bloodstream and then leaks out into the brain tissue...hmmmm, what do you think?
So your safest bet is to dump it on medical control. I have always had very liberal protocls, even when I was a ground medic in Florida, however this one time I had a pt that was presenting signs of CVA, but his BGL was in the mid 50's. I didnt think it was low enough to be affecting him like it was, so I was leaning towards a stroke. However, protocols state I should give D50 based on his sugar level. So to cover my arse, I called med control and asked what I should do and presented my case. He thanked me for calling and said, give only half an amp of D50 and see what happens. See how simple that was. I now shifted liability to med control. For the record, the pts sugar got better, but not his defecits, he was having a CVA and no it wasnt hemmorhagic.