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Updated: May 29, 2026
08:11
Voltage-Dependent Potassium Current Recording on H9c2 Cardiomyocytes via the Whole-Cell Patch-Clamp Technique
Published on: November 11, 2022
[An asymptomatic chronic hypokalaemia].
Marie-Pierre Otto1, Valérie Cheminel, Lionel Crevon
1Laboratoire de biologie, Service de médecine interne, Hôpital d'instruction des armées Desgenettes, Lyon. mp0207@hotmail.fr
Annales De Biologie Clinique
|September 8, 2011
Summary
Gitelman syndrome, a genetic kidney disorder, is often asymptomatic and misdiagnosed as Bartter syndrome. Key diagnostic indicators include low magnesium and calcium levels in urine, confirmed by genetic testing.
Area of Science:
- Nephrology
- Medical Genetics
Background:
- Differentiating between Bartter syndrome and Gitelman syndrome is crucial for patients with hypokalemia and metabolic alkalosis.
- Gitelman syndrome is a genetic disorder affecting renal salt reabsorption.
Observation:
- An asymptomatic patient presented with severe chronic renal hypokalemia and metabolic alkalosis.
- Low serum magnesium and low urinary calcium levels were observed.
- Genetic testing identified a homozygous mutation in the SLC12A3 gene.
Findings:
- The clinical presentation and diagnostic tests strongly indicated Gitelman syndrome.
- Molecular diagnosis confirmed the presence of a known mutation in the SLC12A3 gene.
- A familial mutation was identified in the patient's sister.
Implications:
- Accurate diagnosis of Gitelman syndrome relies on identifying low magnesemia and hypocalciuria.
- Gitelman syndrome is likely underdiagnosed due to asymptomatic presentation.
- Treatment involves diuretics, magnesium, and potassium supplementation.
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