auto transfusion is a bit cumbersome in that setting as your patient has anemia (I suppose due to GI bleeding or inflammation?). in my country autotransfusion in scheduled orthopedic surgery is almost abandoned for alternative treatment to transfusion: IV iron with erythropoietin to rise their hemoglobin level to 13-15 g/dl, making blood losses bearable for the patient. Of course blood losses are less predictable in case of cancer surgery...
You should try these transfusion sparing treatment for your patient, if his anemia is clearly linked to bleeding, he should respond to iron treatment and EPO in order to collect 2 to 4 RBC packs. Otherwise if this fails, he will have to receive blood from donors.
it depends to the patient heart codition and her functional class
if she has METS> 4 so she can tolerate Hb:7. And we can do autologos blood donation before operation and she will not need to recieve other blood than herself.
Probably it is secondary to chronic blood loss, so ferropenic plus inflammation and/or B12 deficit. Helicobacter infection must be considered. In this case, high dose of intravenous iron is the best option (plus C vitamin and B12 vitamins)
If anaemia is well treated, and restrictive transfusion criteria will be safely apply (younn-mature man), predeposit autodonation is not required neither necessary.
thanks for your replay but i mean with consideration of huge and locally advanced tumor and expectation of remarkable bleeding during surgery ,I want to find a way to keep and save the patient blood before surgery outside in order to infuse during or after surgery.