People who get stale blood during surgery, the risk of death increases by 30%, U.S. researchers reported. According to researchers, the risk of death increased by 30% if a person receives blood that has been stored for more than two weeks. This leads to a dilemma, because the blood banks and hospitals have not capable of the necessary amount of fresh blood. By the U.S. FDA Food and Drug Administration so far may be suitable blood for six weeks. Also, blood banks often produce blood that they are the longest. Scientists have the study, which was attended by about 6,000 patients who had undergone heart surgery at the Cleveland Clinic. Dr. Koch and his colleagues compared the results of the patient's health status after a certain period of time, focusing on the type of blood was given to each of them during the operation. It was found that the threshold of mortality, 1.7% of patients who received surgery during the fresh blood as with 2.8% among those who got stale blood reaches comparison. However, according to scientists, it is very difficult to perform the task, so that the blood can not be older than 2 weeks, as blood banks offer constantly get rid of the new blood, and 2 weeks until it is quite an easy task. Researchers believe that early period significantly reduced the use of blood, but while it is not clear how it all into practice.
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