Absorption of Sodium and Chloride in Continent Reservoirs for Urine: Comparison of Ileal and Colonic Reservoirs

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Abstract
The absorptive capacity of urinary reservoir mucosa was studied by measuring the fractions of 22sodium and 36chloride absorbed after instillation into reservoirs constructed from an ileal or a colonic segment. The absorption of 22sodium did not differ between the 2 reservoir types but absorption of 36chloride was greater in the colonic reservoirs. The levels of chloride in serum were significantly higher in patients with a colonic than in those with an ileal reservoir. In the ileal reservoirs the absorptive capacity was greater for 22sodium than for 36chloride.