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.
How much is a unit of blood? Brookhaven National Laboratory explains that within one unit of blood there are several components, including red blood cells, white blood cells, plasma, platelets and cryoprecipitate. Each component of blood can be stored for differing amounts of time, with plasma lasting the longest.