I just have to say a bit more about that promotional video for bloodless medicine that Fisherman posted.
The "bloodless" industry is dependent upon blood transfusion technology. Without blood transfusions, there would be no "bloodless" medicine.
The doctor in this video emphasizes how much better it is to avoid blood. What he fails to mention is that "sometimes" (a lot of the time, actually...) the alternatives to allogenic blood transfusions that are being developed are riskier than the blood transfusion itself.
Case in point: Hemopure et al
Artificial/synthetic blood is the holy grail of the bloodless industry. Hemopure, along with others like Polyheme, did not get FDA approval. And why was that? Well...if you took Hemopure instead of the standard allogenic blood transfusion, you increased your risk of dying by as much as 30%.
I won't even get into any of the other "alternatives" that are promoted by the bloodless cult and how those alternatives have increased morbidity and mortality in the patients who have used them.
The bloodless industry shamelessly hides that their promotional material is deceptive and they don't reveal the true cost of pursuing ideology in favor of unbiased medical science. Sound familiar?