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Development of Human Renal Tubular Epithelial Cell Primary Cultures in Monolayers and Three-Dimensional Conditions
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Renal Tubular Acidosis

Robert Todd Alexander1, Martin Bitzan2

  • 1Department of Pediatrics and Physiology, Stollery Children's Hospital, 11405-87 Avenue, Edmonton, Alberta T6G 1C9, Canada.

Pediatric Clinics of North America
|November 21, 2018
PubMed

Insights

Renal tubular acidosis (RTA) in children presents as metabolic acidosis. Diagnosis and type determination are crucial for prognosis and treatment, with stone risk varying by RTA type.

Area of Science:

  • Pediatric Nephrology
  • Acid-Base and Electrolyte Disorders
  • Metabolic Diseases

Background:

  • Renal tubular acidosis (RTA) is a critical condition in pediatric patients.
  • Early suspicion in poorly thriving children with specific metabolic acidosis is key.
  • Understanding RTA subtypes is essential for effective management.

Purpose of the Study:

  • To highlight the diagnostic criteria for RTA in young children.
  • To emphasize the importance of differentiating RTA types for treatment and prognosis.
  • To discuss the implications of RTA subtypes on nephrolithiasis and calcinosis risk.

Main Methods:

  • Clinical presentation analysis of pediatric RTA cases.
  • Biochemical workup including anion gap, potassium levels, and urine citrate excretion.
  • Correlation of RTA type with syndromic features, stone risk, and treatment strategies.

Main Results:

  • Hyperchloremic, hypokalemic normal anion gap metabolic acidosis suggests RTA in infants.
  • Urine citrate levels differentiate proximal RTA (negligible stone risk) from distal RTA (high stone risk).
  • Further workup is necessary to determine specific RTA type and etiology.

Conclusions:

  • Prompt diagnosis of RTA in children is vital for appropriate management.
  • Identifying RTA type guides treatment choices and predicts prognosis, particularly regarding stone formation.
  • Novel slow-release alkali and potassium supplements show promise for simplified and sustained RTA correction.

Keywords:
Acid–base homeostasisAmmoniumBicarbonateHyperkalemiaNephrocalcinosisRenal Fanconi syndromeUrine anion gap

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