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Cardiovascular and renal hemodynamic function, nitrogen, electrolyte, and water balances, and circulating eosinophils have been studied before and during the formation of ascites produced by thoracic inferior caval constriction. The data show a striking decrease in the renal and fecal excretion of sodium (Na) and an elevation in fecal potassium (K) output. An analysis of possible factors which might effect the reduction in renal Na excretion demonstrates that neither a low cardiac output nor a depressed glomerular filtration rate is the primary factor.
Davis et al. (Sun,) studied this question.