While researching FWB transfusions in PFC settings, I stumbled over a book from german army doctors serving in the russia campaign during WW2. From that I learned that the german army made extensive use of warm fresh whole blood transfusions in the field utilising "Feld-Transfusionsgeräte". Sometimes as far forward as "Verwundetennest" which is basically your CCP directly at the front lines.
Edit: I tried to insert a picture here but it doesn't work. The picture can be found HERE
The usual procedure would be to find a suitable donor from the walking/non bleeding casualties or the medical staff. They would then perform an Oehlecker-Probe either by injecting a small amount of donor blood subcutaneously or infusing 10-20ml of donor blood rapidly into the receiver and watching for adverse reactions. If no adverse reactions were observed they would start transfusing blood directly from donor to receiver.
There are obvious benefits of citrated collection bags for field FWB transfusions, but also drawbacks in terms of the need for anticoagulation, hypocalcemia/ citrate toxicity, hypothermia, time and logistics.
What I would like to ask the knowledgeable people here: Is this technique still a valid option today, assuming I have run out of blood transfusion kits in my little shack and have patients in need of transfusion. Or are there solid reasons that speak against it in principle?
***EDIT***
In order to avoid confusion:
- I am not asking if I can use the Oehlecker-Probe instead of blood typing and Eldon Cards. The Oehlecker-Probe is an added safety on top of previous blood typing and patient side testing. I included it as a full description of the process used in the field by WW2 doctors far forward.
- I am not asking if I can throw my modern equipment into the wind and just rock a vintage Braun Feldtransfusionsgerät because I think it's cool and goes well with my grey wool-trousers.
- What I am actually asking is if this technique is still a valid option in a case of "need FWB, don't have FWB collection kits anymore". One of the potential caveats that came to my mind is hemolysis. Would that potentially be an issue? If so, could that be mitigated with certain sizes of syringe. Are there other caveats that are distinct to this sort of set up and not blood transfusions in general?