Dificultadeneltratamientodelhipertiroidismopor amiodarona.Presentacióndeuncaso

Amiodarone causes changes in thyroid function tests in about 1520% of patients, inducing either hypothyroidism or thyrotoxicosis. The iodine load and the destructive thyroiditis caused by amiodarone produ ce thyrotoxicosis. We report a case of amiodarone-induced thyrotoxico sis diagnosed when investigating the reason for worsening of cardiac funtion.Prognosisandtreatmentofcardiacdisorderweredeterminedby thyrotoxicosis. The management needed a closed monitoring of thryroid function. Treatment was based on high doses of propylthiouracil and