Abstract:
:Classic renal tubular acidosis is characterized by a primary defect in establishment of a large hydrogen ion gradient across the distal renal tubule. Thus the development of hyperchlorenic metabolic acidosis follows. In addition, hypokalemia results from renal potassium wasting secondary hyperaldosteronism from sodium wasting and contraction of the extracellular fluid. The presenting signs and symptoms are growth retardation, fatigue, periodic paralysis, polyuria, polydipsia, vomiting and constipation as well as nephrocalcinosis and nephrolithiasis. It is suggested that effective treatment with alkali therapy requires markedly higher doses than formerly recommended, and may related to a higher rate of endogenous acid production from (1) intermediary metabolism of sulfur amino acids and organic acids, (2) impaired tubular reabsorption of bicarbonate and (3) hydrogen ion release from hydroxyapatite formation. It is also suggested that acidosis may interfere with vitamin D metabolism and thus play an important role in the pathoetiology of the growth failure in children with this disorder.
journal_name
Nephronjournal_title
Nephronauthors
Chan JCdoi
10.1159/000181626subject
Has Abstractpub_date
1979-01-01 00:00:00pages
152-8issue
2-3eissn
1660-8151issn
2235-3186journal_volume
23pub_type
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