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Definition of Artificial kidney
1. Noun. A machine that uses dialysis to remove impurities and waste products from the bloodstream before returning the blood to the patient's body.
Medical Definition of Artificial kidney
1. A machine for haemodialysis in acute or chronic renal failure; toxic substances in the blood are removed by exposure to dialyzing fluid across a semipermeable membrane. Synonym: artificial kidney. Ultrafiltration haemodialyzer, a haemodialyzer that uses fluid pressure differentials to bring about loss (usually) of protein-free fluid from the blood to the bath, as in certain edematous conditions. (05 Mar 2000)