When a kidney is harvested from a deceased donor, it is traditionally packed in a plastic bag of nutrients and placed on ice in an effort to slow its deterioration in the hours leading up to transplantation.
These machines attach to the blood vessels that supply the kidney and push a steady flow of cooled solution(溶液)through the organ. A recent study found that one year after transplantation, 94% of perfused(液を送る、浸み込ませる)organs were still working, compared to just 90% of the traditionally preserved kidneys.