While âBRBâ is most widely used in the context of real-time chat, the term has been also discussed on Usenet, including a post on the alt.usage.english newsgroup on January 13th, 1994.
Blood transfusions are done to replace blood lost during surgery or due to a serious injury. A transfusion also may be done if your body can't make blood properly because of an illness. During a blood transfusion, a small needle is used to insert an IV line into one of your blood vessels. Through this line, you receive healthy blood. The procedure usually takes 1 to 4 hours, depending on how much blood you need. Blood transfusions are very common. Each year, almost 5 million Americans need a blood transfusion.
The testing process takes up to two days. This is why it is the blood on the shelf ready to go that save lives. There is no substitute for blood, when a patient requires blood, there is only one source - a blood donor. You are able to donate whole blood and red cell + plasma apheresis every eight weeks. You are able to donate platelet apheresis every two weeks.