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barry barry
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Posts: 11630
11 years ago
Proper cross-matching of blood type is essential for safe blood transfusion. What is the general rule for safe blood transfusion, and what are the consequences if a patient receives the incorrect blood type by accident? If a patient's blood type is unknown, what is the safest course of action?
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11 years ago
The general rule for safe blood transfusion is that the recipient blood must not contain an antibody that reacts with an antigen in the donated blood. When such a reaction occurs, blood clots produced by clumping blood cells form at the site of transfusion. The clots block circulation, deprive tissues of oxygen, and can potentially cause life-threatening complications. Thus, if a patient's blood type is not known, they are given type O-negative blood because it contains no antigens for the patient's own blood to react with.
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