title: Severe pseudohypoaldosteronism in a pair of twins not associated with hydramnios.
abstract: A pair of non-identical twins with severe pseudohypoaldosteronism (PHA) were followed over a period of 4 years. The diagnosis was based on dehydration, hyponatremia, hyperkalemia, high urine sodium/potassium ratios, and high serum concentrations of aldosterone and renin. Sweat and saliva electrolyte concentrations were high, suggesting multifocal target-organ unresponsiveness to mineralocorticoids. No hydramnios was observed during pregnancy. Despite continuous treatment with sodium chloride and sodium bicarbonate (< or = 20 g/day) and cation exchange resin (Kayexalate, sodium polystyrene sulfonate, < or = 4 g/kg per day), the children had repeated episodes of dehydration, hyponatremia, and hyperkalemia. Growth velocity was normal in both twins. Catch-up growth was observed following infancy in the first twin. Normalization of plasma aldosterone, electrolytes, and renin concentrations was achieved at the age of 9 months.
authors.affiliation: Department of Pediatrics, Assaf Harofeh Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Israel.
authors.forename: T
authors.initials: T
authors.lastname: Bistritzer
authors.forename: E
authors.initials: E
authors.lastname: Lahat
authors.forename: G
authors.initials: G
authors.lastname: Eshel
authors.forename: J
authors.initials: J
authors.lastname: Barr
authors.forename: A
authors.initials: A
authors.lastname: Hanukoglu
authors.forename: M
authors.initials: M
authors.lastname: Aladjem
mesh_terms: D001827:Body Height; D005260:Female; D005438:Fludrocortisone / Q000627:therapeutic use; D006801:Humans; D007223:Infant; D008297:Male; D008901:Mineralocorticoids / Q000097:blood / Q000502:physiology / Q000627:therapeutic use; D006831:Polyhydramnios / Q000503:physiopathology*; D011247:Pregnancy; D011546:Pseudohypoaldosteronism / Q000188:drug therapy / Q000503:physiopathology*; D014429:Twins, Dizygotic; D015430:Weight Gain
chemical_list: D008901:Mineralocorticoids; D005438:Fludrocortisone