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  • Title: [Pseudo-Bartter syndrome as manifestation of cystic fibrosis with DF508 mutation].
    Author: Galaviz-Ballesteros MJ, Acosta-Rodríguez-Bueno CP, Consuelo-Sánchez A, Franco-Álvarez I, Olalla-Mera OI, Vázquez-Frias R.
    Journal: Bol Med Hosp Infant Mex; 2016; 73(5):331-334. PubMed ID: 29384126.
    Abstract:
    BACKGROUND: Pseudo Bartter syndrome (PBS) is defined as hypokalaemic hypochloraemic metabolic alkalosis in the absence of renal tubular pathology. Children with cystic fibrosis (CF) are at risk of developing electrolyte abnormalities and even PBS may occur. CASE REPORT: 5 months old female infant with a history of two events of dehydration with vomit, refusal to eat, chronic cough, polyuria, malnutrition, metabolic alkalosis, hypokalemia, hyponatremia, hypochloremia and acute renal failure. Chronic cough study was performed, discarding pulmonary tuberculosis, gastroesophageal reflux disease and impaired swallowing. PBS was diagnosed due to hypokalaemic hypochloraemic metabolic alkalosis in the absence of renal tubular pathology. CF was corroborated by electrolytes in sweat and through molecular analysis of the delta F508 mutation. This is one of the few reported cases linking PBS and this mutation. CONCLUSIONS: In patients with hyponatremic dehydration episodes with hypokalaemic hypochloraemic metabolic alkalosis, PBS should be considered as differential diagnosis. CF could be presented as PBS, mainly in patients younger than 2 years.
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