title: Rapidly developing iatrogenic hyponatremia in a child following tonsillectomy.
abstract: Hyponatremia develops as a result of the inappropriate secretion of antidiuretic hormone. In rare cases, it develops as an iatrogenic complication. For example, acute iatrogenic post-tonsillectomy hyponatremia has been described in children following the infusion of hypo- or isotonic fluid. We report a case of rapidly developing post-tonsillectomy iatrogenic hyponatremia in a 5-year-old girl following an excessive infusion of hypotonic fluid. Her signs and symptoms began with nausea and vomiting and progressed to seizures and coma. We corrected the electrolyte disturbance by infusing a 3% sodium chloride solution until her neurologic manifestations disappeared, at which time her serum sodium concentration had risen back to 135 mEq/L. Otolaryngologists are not generally exposed to much information about hyponatremia, so we must be aware of its associated neurologic signs and symptoms.
authors.affiliation: Department of Otorhinolaryngology, Istanbul Education and Research Hospital, Istanbul, Turkey. taskin_umit@yahoo.com
authors.forename: Umit
authors.initials: U
authors.lastname: Taskin
authors.forename: Omer
authors.initials: O
authors.lastname: Binay
authors.forename: Cigdem
authors.initials: C
authors.lastname: Binay
authors.forename: Ozgur
authors.initials: O
authors.lastname: Yigit
mesh_terms: D000233:Adenoidectomy; D002675:Child, Preschool; D003128:Coma / Q000209:etiology*; D005260:Female; D005440:Fluid Therapy / Q000009:adverse effects*; D006801:Humans; D007010:Hyponatremia / Q000209:etiology*; D007038:Hypotonic Solutions / Q000009:adverse effects*; D007049:Iatrogenic Disease; D011182:Postoperative Care / Q000009:adverse effects; D012640:Seizures / Q000209:etiology*; D012965:Sodium Chloride / Q000009:adverse effects; D014068:Tonsillectomy; D014883:Water-Electrolyte Imbalance / Q000517:prevention & control*
chemical_list: D007038:Hypotonic Solutions; D012965:Sodium Chloride