*Autotransfusion is a medical procedure where a person receives their own blood for a transfusion instead of banked donor blood. This technique is often used during surgeries where there is a high expectation of blood loss, such as in cardiac or orthopedic surgeries. Autotransfusion can be advantageous because it minimizes the risk of transfusion-related infections and immune reactions since the blood used is the patient's own. *
*One of the major risks associated with autotransfusion is sepsis, particularly if the blood collection or handling procedures are not properly sterilized. Since the blood is collected during surgery, it must be done so in a sterile manner to avoid contamination with bacteria or other pathogens that could cause an infection when reinfused. *
*Another risk involves air embolism, which can occur if air accidentally enters the veins during the transfusion process. This can be life-threatening if not immediately managed, as it can obstruct blood flow to vital organs. *
*Regarding the risk of citrate toxicity, this primarily concerns the anticoagulant used in stored blood to prevent clotting. In most autotransfusion systems, citrate is also used as an anticoagulant. However, because the blood is typically reinfused quickly after collection, the body's natural mechanisms can efficiently metabolize the citrate, generally reducing the risk of toxicity compared to traditional blood transfusions where blood may have been stored for longer periods. *
*Lastly, transfusion reactions in autotransfusion are significantly less likely compared to donor blood transfusions. This is because the blood reinfused is the patient's own, which eliminates the risks associated with immune system reactions to foreign blood antigens. While not entirely impossible (particularly if the blood is mishandled or contaminated), the risk of a transfusion reaction in the context of using one's own blood is minimal. *
*Therefore, the correct answer to the question, "Which of the following is NOT a risk of autotransfusion?" is "Transfusion reaction." This is because, in autotransfusion, the use of the patient's own blood significantly diminishes the risk of an immune response compared to the transfusion of blood from another donor.