Patient factors affecting autologous and allogeneic blood transfusion rates in total hip arthroplasty.

Overview

Factors that place patients undergoing total hip arthroplasty (THA) at increased risk of receiving an allogeneic or autologous blood transfusion may aid in determining which patients should predonate blood. The records of 354 consecutive patients undergoing THA were retrospectively reviewed to determine patient factors related to transfusion requirement. The risk of transfusion requirement was most strongly correlated with low preoperative hemoglobin level, but also with older age, higher American Society of Anesthesiologists physical status rating, female sex, cemented arthroplasty, and revision surgery. These patients were also least likely to predonate blood, likely because of their comorbid status.