Postoperative persistent hyponatremia: A case with metastatic lung cancer

Introduction: Hyponatremia is most commonly encountered electrolyte disorder in clinical practice. syndrome of inappropriate anti- diuretic hormone secretion (sIADH), most frequent cause of euvolemic hyponatremia, is an important element that increases risk for morbidity and mortality and indicates severity of primary disease. sIADH can be seen in many clinical conditions or as multifactorial. case report: A 64-years old male presented to our facility emergency department with the complaints of shortness of breath and abdominal pain. According to the assessment, Morgagni hernia was in the thoracic and abdominal computed tomography (ct). the patient was hospitalized in the general surgery service and taken to the operation for hernia repair. On day-2 after operation, he had low serum Na+ value (124 mEq/L (124 mmol/L)). serum Na+ value decreased