Old blood is bad blood! A new study published in the New England Journal of Medicine suggests that older donated blood may be affect patients. Researchers have long known that blood degrades over time and the Food and Drug Administration don't allow to use blood stored more than 42 days. But, researchers at the Cleveland Clinic found that 42 days is too long and increases the risk of death. They examined records of 6,002 patients and found that heart surgery patients who got transfusions of blood that was more than two weeks old fared worse than those who received newer blood.
The published study says: "the relative risk of postoperative death is increased by 30% in patients given blood that has been stored for more than two weeks. These results may appear to suggest that blood should be classified as outdated earlier than current recommendations." Link
The published study says: "the relative risk of postoperative death is increased by 30% in patients given blood that has been stored for more than two weeks. These results may appear to suggest that blood should be classified as outdated earlier than current recommendations." Link
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