Which blood type is the most appropriate for further intraoperative transfusions in this scenario?

Which blood type is the most appropriate for further intraoperative transfusions in this scenario?

• A. Type A, Rh-positive whole blood
• B. Type A, Rh-positive RBCs
• C. Type O, Rh-positive whole blood
• D. Type O, Rh-negative RBCs

Answer: (D)

In an intraoperative transfusion where the patient’s blood type isn’t known yet, the priority is to avoid any ABO or Rh mismatch that could trigger a severe transfusion reaction. Red blood cells from type O donors are the safest starting point because they lack A and B antigens on the cell surface, and if the donor is Rh-negative, they also lack the D antigen. This makes O negative red cells the universal donor for RBC transfusion, minimizing the risk across any recipient ABO/Rh type. Choosing whole blood is less ideal in this emergency context because the donor plasma in whole blood can contain anti-A and anti-B antibodies that might attack the recipient’s red cells if there’s an ABO mismatch. Red blood cell units, especially O negative, provide minimal antigen exposure while still delivering the necessary oxygen-carrying cells. So, the best option for ongoing intraoperative transfusions when the patient’s status isn’t yet determined is universal donor red blood cells: type O negative.

In an intraoperative transfusion where the patient’s blood type isn’t known yet, the priority is to avoid any ABO or Rh mismatch that could trigger a severe transfusion reaction. Red blood cells from type O donors are the safest starting point because they lack A and B antigens on the cell surface, and if the donor is Rh-negative, they also lack the D antigen. This makes O negative red cells the universal donor for RBC transfusion, minimizing the risk across any recipient ABO/Rh type.

Choosing whole blood is less ideal in this emergency context because the donor plasma in whole blood can contain anti-A and anti-B antibodies that might attack the recipient’s red cells if there’s an ABO mismatch. Red blood cell units, especially O negative, provide minimal antigen exposure while still delivering the necessary oxygen-carrying cells.

So, the best option for ongoing intraoperative transfusions when the patient’s status isn’t yet determined is universal donor red blood cells: type O negative.