Clinical and pathophysiologic spectrum of acquired distal renal tubular acidosis.

作者: Daniel C. Batlle , John T. Sehy , Melvin K. Roseman , Jose A.L. Arruda , Neil A. Kurtzman

DOI: 10.1038/KI.1981.151

关键词:

摘要: Clinical and pathophysiologic spectrum of acquired distal renal tubular acidosis. Urinary acidification was studied in nine patients with hyper-chloremic metabolic The aim this study to investigate the mechanism(s) impaired by systematic administration sodium sulfate neutral phosphate. No impairment proximal apparent because all had a fractional bicarbonate excretion below 5% at plasma concentrations above 22 mEq/liter. All except two were unable lower urine pH 5.5 despite systemic who lowered normally hyperkalemic selective aldosterone deficiency. Six failed (6.04 ± 0.16) achieve normal minus blood (U-B) Pco 2 gradient phosphate (2.8 3.5mm Hg). Control subjects, deficiency, remaining patient increased U-B 25mm Hg response infusion, respectively. abnormal these agents exhibited six strongly suggests that mechanism secretory failure proton pump. three indicates pump able secrete hydrogen ions under maximal stimulation. This pattern is totally predictable isolated deficiency are also capable lowering presence distinctive can be explained on basis voltage-dependent type may disclosed findings both ion potassium secretion. Aspects clinique et physiopathologique de l'acidose tubulaire distale acquise. L'acidification urinaire ete etudiee chez neuf malades ayant une acidose metabolique hyperchloremique. Le but ce travail etait d'etudier le mecanisme l'alteration l'acidification par l'administration neutre. Il n'est pas apparu d'alteration l'acidication proximale puisque tous les avaient fractionnelle inferieure des plasmatique superieures mEq/litre. Tous sauf deux etaient incapables d'abaisser leur au dessous 5,5 malgre metabolique. Les qui abaissaient l'urine valeurs normales hyperkaliemiques un deficit selectif d'aldosterone. n'ont pu abaisser en avec (6,04 0,16) ont realiser urine-sang sous neutre (2,8 3,5mm sujets controles, d'aldosterone dernier malade abaisse augmente plus reponse aux administrations neutre, respectivement. La anormale suggere fortement que est defaut fonctionnement la pompe protons. normale trois derniers indique secreter hydrogene dans conditions stimulation maximales. Cette modalite previsible isole sont aussi capables d'une systemique. d'acidification particuliere du meme temps hyperkaliemique peut etre expliquee dependant difference potentiel. situation reconnue constatation d'un desordre portant fois sur secretion celle potassium.

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