Severe Hyponatremia-Induced Takotsubo Cardiomyopathy
Journal: Cureus
Year: 2025

We report the case of a 79-year-old woman with background of chronic hyponatremia secondary to syndrome of inappropriate antidiuretic hormone secretion (SIADH) who presented with chest pain and marked troponin elevation in the absence of an identifiable emotional stressor. Initial investigations revealed severe hyponatremia (serum sodium 122 mmol/L) and elevated cardiac enzymes. Her electrocardiogram showed normal sinus rhythm with deep, symmetrical T wave inversions in the inferior and precordi