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.
1 The blood is separated into transfusable components â red cells, plasma, platelets and/or cryoprecipitated AHF. 2  This type of blood donation usually takes about an hour, though the actual donation takes about 8-10 minutes. 3  You are eligible to donate 'whole blood' every 56 days. This type of blood donation usually takes about an hour, though the actual donation takes about 8-10 minutes. 2  You are eligible to donate 'whole blood' every 56 days.