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BLOOD BAG; PROTECTION FROM BACTERIA: REVIEWt.

Blood transfusion is a medical treatment that replaces blood lost through injury, surgery, or disease. The blood goes through a tube from a bag to an intravenous (IV) catheter and into your vein. .... Your temperature, your blood pressure, and the volume of red blood cells in a blood sample (hematocrit) are checked. You may ...