STUDIES ON PRESERVED HUMAN BLOOD

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Abstract
The concentration of potassium in the human erythrocyte is normally from seventeen to twenty times that in the serum.1Any change in this ratio occurring during the storage of blood is of clinical interest in view of the well known toxicity of potassium salts injected intravenously. Dulière2noted a progressive increase in the plasma potassium of human blood stored for ten days. Jeanneney and his co-workers3confirmed this observation and also demonstrated a coincidental diminution of plasma sodium. The studies here recorded were undertaken with the hope that the increase in plasma potassium might serve as an index of corpuscular deterioration. Some of the data were published in a preliminary report4and later presented in an exhibit.5Scudder, Drew, Corcoran and Bull6have since published detailed experiments dealing with the same subject. METHODS Blood was drawn aseptically from the median basilic veins of healthy men into pyrex Erlenmeyer flasks of

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