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  • Title: Acquired distal renal tubular acidosis in man.
    Author: Better OS.
    Journal: Klin Wochenschr; 1982 Oct 01; 60(19):1215-7. PubMed ID: 6755051.
    Abstract:
    Distal renal tubular acidosis (dRTA) may complicate renal transplantation, liver cirrhosis, and obstructive uropathy. Indeed, its occurrence may be an early clue to an episode of rejection of the graft or to obstructive uropathy. The mechanism in most patients with dRTA is impaired distal secretion of protons. In some patients, however, back leak of protons from tubular lumen to blood may abolish distal tubular ability to maintain urine to blood proton gradients. In patients with obstructive uropathy the spectrum of tubular acidosis is widened by the occurrence of additional defects in tubular secretion of potassium and impairment of hydrogen ion secretion secondary to hypoaldosteronism. Hyperkalemia is also seen in "voltage dependent" states such as following the administration of lithium and amiloride. Hyperkalemia per se is conducive to acidosis by a combination of extrarenal and several intrarenal mechanisms.
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