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Surreptitious habitual vomiting simulating Bartter's syndrome

E Ramos, M Hall-Craggs, L M Demers

    JAMA
    |March 14, 1980
    PubMed
    Summary
    This summary is machine-generated.

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    This case study highlights a patient initially diagnosed with Bartter syndrome. Further investigation revealed surreptitious vomiting as the cause of hypokalemia, not Bartter syndrome.

    Area of Science:

    • Nephrology
    • Endocrinology
    • Gastroenterology

    Background:

    • Bartter syndrome is a rare genetic disorder characterized by hypokalemia, metabolic alkalosis, and hyperreninemia.
    • The patient presented with symptoms suggestive of Bartter syndrome, including hypokalemia, hyperreninism, and hyperaldosteronism.

    Observation:

    • Kidney biopsy revealed juxtaglomerular apparatus hyperplasia but lacked renomedullary cell hyperplasia.
    • Urine analysis showed low chloride levels and no increased fractional chloride clearance, inconsistent with Bartter syndrome.

    Findings:

    • The patient's hypokalemia and alkalosis were ultimately attributed to surreptitious vomiting.
    • This case underscores the importance of a comprehensive diagnostic approach, considering behavioral factors.

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    Implications:

    • Differentiating Bartter syndrome from other causes of hypokalemia is crucial for appropriate management.
    • Recognizing atypical presentations and considering non-renal causes is essential in complex cases.