Preoperative anaemia

摘要

Blood transfusion may be beneficial and life saving in particular clinical situations. However, transfusions do carry some risks. Blood is a limited resource and liable to shortage at times of peak demand. Total hip replacement surgery accounts for 4.6% of blood used in hospitals and studies have shown a wide variation in transfusion practice for this procedure. A pre-operative haemoglobin (Hb) of less than 12 g/dl increases the likelihood of transfusion threefold.