How blood is reproduced after being lost in large number internally? Does blood infusion is as simple as injecting blood directly to the human system?
2006-11-18 23:35:31 · 3 answers · asked by Midi Amp 2 in Health ➔ Other - Health
Red Blood Cells (RBC) has a life span of 120 days. After days it ruptures and new cells are produced by the bone marrow and the REC (reticuloendothelial system) with the help of several reactions and enzymes. For blood transfusions, they don't just infuse blood. the donor and the recipient should have the same blood type and even if they have the same type they still should be compatible through cross matching procedures, before blood transfusion would occur.
2006-11-19 00:07:41 · answer #1 · answered by ? 7 · 1⤊ 0⤋
Women lose significant amounts of blood every month, and must be replacing it or they wouldn't have any left. All of the blood cells are constantly regenerated because they all have finite life spans. Red blood cells last only 4 months, and are removed and destroyed. Many of the white blood cell types are really only using the bloodstream to get to the tissues where they will take up residence. These also only last so long. Type O blood is considered the universal donor type, because the red cells lack A and B proteins. For this reason, you can give type O blood regardless of the blood type of the recipient. O negative blood is the blood of choice when you don't know what the blood type of the recipient is, usually because if the docs waited for a blood type, the patient would be dead by the time they get it. The ABO blood types are only one of the hundreds of different blood types that people can display. The pos/neg thing refers to the Rh system. If you have the Rh protein on your red cells, you're Rh positive. If not, you're Rh negative. When possible, we like to transfuse Rh specific blood as well, an O+ to an O+, B- to a B-, etc. Type specific blood means that the blood you're transfusing is the same blood type as the recipient A to A, O to O, whatever.
2016-05-22 02:51:22 · answer #2 · answered by Elizabeth 4 · 0⤊ 0⤋
Blood cells, of most flavours, are made in the bone marrow constantly, after most blood loss (up to 1.5L generally), there's no need to transfuse blood as the body will produce new blood in time.
Blood transfusion is as simple as infusing group and antibody matched (or just Oneg in an emergency) directly into a (usually) pheripheral vein.
2006-11-18 23:43:04 · answer #3 · answered by Anonymous · 2⤊ 0⤋