When reviewing medical literature pertaining to the efficacy of blood transfusions, it is essentially nonexistent. There have been a couple of recent studies that suggest that individuals fair better when blood conservation methods are employed opposed to blood transfusions. The situation you described has not been studied except in very small limited expost-facto samples. Those of us who are involved with formalized blood conservation have seen repeatedly Jehovah's Witness patients with cardiac problems deal very well with moderately to severe anemic episodes.

I guess the bottom line in what you described is: Show me the data????