Why is normal saline used of dextrose in transfusions?

Normal saline is used in transfusions primarily because it is isotonic and compatible with blood products, helping to prevent hemolysis and maintain blood volume. Dextrose solutions can cause hemolysis due to their hypertonic nature and may lead to complications like hyperglycemia. Additionally, normal saline helps to keep the transfusion line patent and can dilute any residual blood in the line, ensuring the full volume of the transfusion is delivered.