Relationship of Weight, Venous Pressure and Radiosodium (Na22) Excretion in Chronic Congestive Heart Failure.

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Abstract
For 20 days on a low NaCl intake (<1:7 g./day), a patient recovering from congestive heart failure excreted more Na22 than a control subject and than a patient becoming worse. Variations in weight and venous pressure were concordant but were inversely related to excretion of Na22. For 19 days on a high NaCl intake (13.7 g./day) the patient improving experienced a rise in wt. and venous pressure and a decrease in total Na22 output while the control increased excretion of Na22. The normal subject excreted 50% of the injected Na22 in 30 days, the patient recovering excreted 50% in 25 days and the patient decompensating, only 42%, by the end of the 60 day study. Variations in the excretion of water were concordant with the variations in Na22 excretion.

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