Abstract
Pseudohypoaldosteronism type 2 (PHA2) is a rare inherited condition of altered tubular salt handling. It is characterized by the specific constellation of hyperkalaemic hyporeninemic hypertension, hyperchloremic metabolic acidosis and hypercalciuria. Molecular genetic testing confirms the diagnosis in the majority of cases. Thiazides constitute effective treatment. Due to its rarity, the diagnosis is often delayed. We here present two children with PHA2, who were initially treated with fludrocortisone and bicarbonate complicated mainly by exacerbation of their hypertension. Discontinuation of their previous therapy and commencement of thiazide diuretics led to normalisation of their blood pressure and electrolyte and acid-base status.
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