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.
To regenerate a pint of blood it takes upto 6 weeks. Yet after first transfusion, 2nd transfusion is not accepted within 12 weeks. In a healthy adult with good diet and exerci â¦ se the plasma and WBCs regenerate in 24 hrs, the platelets and protiens in 48 hrs, the RBCs within 4 to 6 weeks. 4 people found this useful.