For emergency volume replacement when severe fetal anemia is suspected, which should be considered?

• A. Albumin (5%)
• B. Non-cross-matched, type-O, Rh-negative packed red blood cells
• C. Normal saline (0.9% NaCl)
• D. Whole blood

Answer: (B)

When severe fetal anemia is suspected and immediate volume replacement is needed, the priority is to quickly restore oxygen delivery by replacing red cell mass rather than just expanding volume. Using uncrossmatched, universal donor packed red blood cells—type O and Rh-negative—allows rapid transfusion without waiting for compatibility testing, minimizing delays in a life-threatening situation. Packed red cells provide the needed oxygen-carrying capacity with less overall volume than whole blood.

Albumin or normal saline may help with intravascular volume, but they do not address the anemia itself and can’t improve oxygen delivery efficiently. Whole blood adds plasma components and may increase risk of reactions or volume overload in a neonate; packed red blood cells alone are preferred for urgent correction of anemia.