How much blood is required for each disease?

A liver transplant patient, on average, will need six - 10 units of red blood cells, 20 units of plasma and 10 units of platelets (or one - two units of apheresis platelets). A kidney transplant patient, on average, will need one - two units of red blood cells. A heart transplant patient, on average, will need four - six units of red blood cells. An adult open-heart surgery patient, on average, will need two - six units of red blood cells, two - four units of plasma and one - 10 units of platelets (or one - two units of apheresis platelets). A newborn open-heart surgery, on average, will need one - four units of red blood cells, one - two units of plasma, and one - four units of platelets. Prostate cancer surgery may require two - four units of red blood cells. Abdominal aortic aneurysm may require four - six units of red blood cells. Bone marrow transplant, on average, requires one - two units of red blood cells every other day for two - four weeks and six - eight units of platelets daily (or one - two units of apheresis platelets) for four - six weeks. A leukemia patient may need two - six units of red blood cells and six - eight units of platelets (or one - two units of apheresis platelets) daily for two - four weeks. Patients with sickle cell disease, on average, need 10-15 units of red blood cells to treat severe complications. A premature newborn may need one - four units of red blood cells while in Intensive Care.