Amiodarone and thyroid dysfunction.

作者: Hema Padmanabhan

DOI: 10.1097/SMJ.0B013E3181E90500

关键词:

摘要: Amiodarone is a potent antiarrhythmic drug associated with thyroid dysfunction. Its high iodine content causes inhibition of 5'-deiodinase activity. Most patients remain euthyroid. Amiodarone-induced thyrotoxicosis (AIT) or amiodarone-induced hypothyroidism (AIH) may occur depending on the status individuals and prior disease. AIT caused by excess iodine-induced hormone synthesis (type I AIT) destructive thyroiditis II AIT). If medical condition allows it, discontinuation recommended in type AIT. Otherwise, large doses thioamides are required. Type treated corticosteroids. Mixed cases require combination both drugs. Potassium perchlorate has been used to treat resistant but use limited toxicity. Thyroidectomy, plasmapheresis, lithium, radioiodine select AIH successfully levothyroxine. Screening for disease before starting amiodarone periodic monitoring function tests advocated.

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