To what temperature should the blood be heated before administration?

• A. 38 degrees Celsius
• B. 4 degrees Celsius
• C. 25 degrees Celsius
• D. 60 degrees Celsius

Answer: (A)

Warming blood to near body temperature before transfusion helps prevent hypothermia and the associated problems with coagulation and oxygen delivery during the infusion. When blood is close to 37–38°C, it preserves the function of clotting factors and platelets and reduces the risk that transfusion will lower the patient’s core temperature. Temperatures that are too cold (like 4°C) can significantly cool the patient and worsen coagulopathy, while very warm or hot temperatures (like 60°C) would damage blood cells and proteins. Room temperature (around 25°C) also isn’t ideal for maintaining safe, effective transfusion. Hence, about 38°C is the best target.