Order blood transfusions if blood loss is ongoing and thought to be in excess of 2000 mL or if the patient’s clinical status reflects developing shock despite aggressive resuscitation. Data from various sources suggest that 1 in 16-40 women experiencing PPH requires a blood transfusion if active third-stage management is used, whereas approximately 1 in 9 requires a transfusion if expectant management is used. Newer studies tend to have lower transfusion rates than older studies