Postoperatively, surgeons seek to minimize further blood loss by continuing administration of medications to augment blood cell mass and minimizing the number of blood draws and the quantity of blood drawn for testing, for example, by using pediatric blood tubes for adult patients.[13] HBOC's such as Polyheme and Hemepure have been discontinued due to severe adverse reactions including death. South Africa was the only country where they were legally authorized as standard treatment but they are no longer available.