A case of Takotsubo cardiomyopathy in a patient with iatrogenic thyrotoxicosis.

Takotsubo cardiomyopathy is a condition caused by intense emotional or physical stress leading to rapid and severe reversible cardiac dysfunction. The etiology and mechanism of this disease are unknown. Thyroid hormone has many effects on the heart and vascular system. There were some reports of Takotsubo cardiomyopathy with hyperthyroidism, especially Grave's disease. We report a patient who presented chest pain and cardiac arrest, and finally diagnosed as Takotsubo cardiomyopathy caused by iatrogenic thyrotoxicosis.