Minor chest injury. You may have chest wall pain after a less serious injury. This pain can occur with movement of a shoulder, an arm, the rib cage, or the trunk of the body. Even a minor injury can cause chest pain for days after the injury.
Quick Answer. A unit of blood is equivalent to approximately 1 pint or 450 milliliters, according to the Canadian Blood Services website. The average patient requires around 4.6 units of blood. Continue Reading.
Blood is composed of plasma, red blood cells, white blood cells, and platelets. Plasma makes up approximately 55 percent of the volume of blood. About 7 percent of a personâs weight is blood. An average sized man has about 12 pints of blood and an average woman has about 9 pints. Plasmapheresis is a plasma donation process in which you only donate the straw-colored âliquidâ portion of your blood, the plasma. A needle is placed in the vein of the donorâs arm, and the blood is collected utilizing a highly specialized medical device approved by the Food and Drug Administration (FDA).