Task: Answer Verification
Input (English): Question: Does post-operative unwashed shed blood transfusion modify the cellular immune response to surgery for total knee replacement?
Answer: Post-operative salvage and return of USB after TKR does not seem to increase the post-operative infection rate or hospital stay, and does not modify CIR induced by surgery. These findings add to the clinical experience that post-operative USB return, as a source of autologous blood, is safe, and questions the beneficial effect of blood washing.
Output (English): no