Abstract
Summary
During water diuresis stop flow-analysis the nephron volume is less than during osmotic diuresis stop flow analysis, there is a demonstrable increase in osmolal U/P in the distal nephron samples, and sodium U/P minimum occurs near the PAH peak. During water diuresis stop flow analysis active proximal reabsorption of sodium is demonstrable or para-aminohippurate is not a valid marker of proximal nephron samples.
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