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  • Title: Distal renal tubular acidosis in recurrent renal stone formers.
    Author: Osther PJ, Hansen AB, Røhl HF.
    Journal: Dan Med Bull; 1989 Oct; 36(5):492-3. PubMed ID: 2805826.
    Abstract:
    Renal acidification ability was examined in 90 recurrent renal stone formers, using fasting morning urinary pH levels followed by a short ammonium chloride loading test in subjects with pH levels above 6.0. Fifteen patients (16.6%) revealed a distal renal tubular acidification defect: one patient (1.1%) had complete distal renal tubular acidosis and 14 (15.5%) incomplete distal renal tubular acidosis. Our results confirm that distal renal tubular acidification defects are associated with a more severe form of stone disease and make distal renal tubular acidosis one of the most frequent metabolic disturbances in renal stone formers. Distal renal tubular acidosis (dRTA) was relatively more common in female stone formers and most often found in patients with bilateral stone disease (36%). Since prophylactic treatment in renal stone formers with renal acidification defects is available, this has important therapeutic implications. The pathological sequence in renal stone formers with dRTA is discussed.
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