The whole blood issue becomes so lost in the argument that after a while you can't see the forest for the trees!
Reniaa...there is no doubt that the prohibition on blood in both the Hebrew and Greek Scriptures refers to DIETARY restrictions...to make the jump to medical use is illogical. Though there are medical risks to using blood, that is not a rationale for abstaining from blood. Having surgery is also a risk...would you decline that? IV administration of blood has no connection to eating blood! As has been pointed out before, if you were "fed" via IV only, you would starve to death...IV administration supports circulatory volume and oxygenation. As Jamie points out, if you only were given blood via IV you would definitely starve to death! To equate it with eating is total nonsense.
I like how Moggy put it...to simplify Acts 15 with the WT explanation misses the entire point of the scripture.