Hyponatraemia-induced Takotsubo syndrome secondary to idiopathic syndrome of inappropriate antidiuretic hormone: a case report.

Background: Takotsubo cardiomyopathy (TC), also known as stress cardiomyopathy or broken-heart syndrome, is an acute, reversible left ventricular dysfunction often triggered by stress and associated with elevated catecholamine levels. Hyponatraemia has been recognized as a potential trigger for TC, although its pathophysiological mechanisms remain unclear.

Case Summary: We present the case of an 84-year-old woman with a history of Type 2 diabetes, primary hypertension, hypothyroidism, and osteoporosis, who was admitted for typical angina and seizures.