Open AccessHyponatremia - A rare complication of Gitelman's syndrome
Author(s) -
Amitava Ganguli,
Judith H. Veis
Publication year - 2017
Publication title -
indian journal of nephrology/indian journal of nephrology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.317
H-Index - 24
eISSN - 1998-3662
pISSN - 0971-4065
DOI - 10.4103/0971-4065.177208
Subject(s) - hyponatremia , medicine , hypokalemia , asymptomatic , antidiuretic , endocrinology , urine osmolality , pediatrics , gastroenterology , thiazide , complication , urinary system , rare disease , disease , hormone , diuretic
Gitelman's syndrome (GS) is a rare autosomal recessive disorder caused by mutations in thiazide-sensitive NaCl cotransporter. We report a 49-year-old, normotensive lady with prolonged hypokalemia since her 20s who was diagnosed with GS at our renal clinic. During follow-up, she was found to have mild, asymptomatic, euvolemic hyponatremia with low serum uric acid, inappropriately high urine osmolality and sodium consistent with syndrome of inappropriate antidiuretic hormone-like presentation. Despite life-long urinary sodium losses, hyponatremia has rarely been reported in GS to be due to the primary disease process. We present relevant clinical data and hypothesize on why this disease per se may be a risk factor for dilutional hyponatremia.