talesin: There is no blood given if it's not necessary. "Bloodless surgery" is a misnomer. All surgery is bloodless, unless a blood transfusion is necessary.
Exactly.
I have had "7" surgical procedures and in only one was blood required and I didn't have so-called "bloodless" surgery.
Something that people don't realize is that "bloodless" surgery does not reduce the need for blood transfusions. (I will find the medical study that shows that...I need some time to find it among all the other stuff I have archived)
Bloodless surgery is not simply surgery without blood - bloodless surgery is all about blood - your own blood. In a bloodless procedure, your blood is drained from your body (in some cases, up to 80%), a volume expander is pumped into you to replace the fluid loss, your blood is then filtered and transfused back into you after the procedure is finished. In a bloodless method, your blood is handled way more than in a conventional procedure.
Bloodless surgery methods add an element of risk that is not there in conventional methods of surgery.