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Acquired Bartter-Like Phenotype.

Srikant R Gadwalkar1, P Rama Murthy2, Raghavendra2

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Summary
This summary is machine-generated.

A middle-aged man experienced sudden limb weakness, low blood pressure, and increased urination. Investigations revealed electrolyte imbalances and hormonal changes, leading to a diagnosis of acquired Bartter-like syndrome.

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Area of Science:

  • Nephrology
  • Endocrinology
  • Internal Medicine

Background:

  • Bartter syndrome is a rare genetic disorder affecting kidney salt reabsorption.
  • It leads to electrolyte imbalances, including low potassium and high urine calcium.
  • Acquired forms can mimic genetic Bartter syndrome.

Observation:

  • A middle-aged male presented with acute onset bilateral limb weakness, hypotension, and polyuria.
  • No preceding illness or specific trigger was identified.
  • Clinical presentation suggested a severe systemic disturbance.

Findings:

  • Laboratory investigations revealed severe hypokalemia, hypocalcemia, hyponatremia, and metabolic alkalosis.
  • Elevated plasma renin and aldosterone levels were noted.
  • Hypercalciuria was present despite hypocalcemia, a key finding.

Implications:

  • The case highlights an acquired Bartter-like phenotype mimicking the genetic disorder.
  • This presentation underscores the importance of considering acquired conditions in electrolyte disturbances.
  • Prompt diagnosis and management are crucial for preventing complications associated with severe electrolyte derangements.