Severe anemia, blood transfusion. How many bags?

Severe anemia several bags of blood transfusion needs to be determined according to the patient's hemoglobin level, blood pressure, weight and tolerance. Hemoglobin below 60g/L is severe anemia, general infusion of 2u red blood cell suspension, can increase hemoglobin 10g/L. Suggestion: You can go to the hospital hematology department to see a doctor, under the guidance of a doctor for blood transfusion.