Successful Treatment of Amiodarone-induced Thyrotoxicosis Type 1 in Combination with Methimazole and Potassium Iodide in a Patient with Hashimoto's Thyroiditis
- Resource Type
- Journal Article
- Authors
- Daisuke Katoh; Hiroshi Uchino; Hiroshi Yoshino; Kayoko Ikehara; Kumiko Tsuboi; Naoki Kumashiro; Takahisa Hirose
- Source
- Internal Medicine. 2020, 59(3):383
- Subject
- amiodarone
amiodarone-induced thyrotoxicosis
color flow Doppler sonography
methimazole
potassium iodide
- Language
- English
- ISSN
- 0918-2918
1349-7235
A patient with underlying Hashimoto's thyroiditis developed amiodarone-induced thyrotoxicosis type 1 that was successfully treated using methimazole in combination with potassium iodide. A 35-year-old woman admitted for perinatal care of twin-to-twin transfusion syndrome was given amiodarone for 7 days for paroxysmal ventricular contraction following pulseless ventricular tachycardia 1 day after delivery. She developed thyrotoxicosis one month after the discontinuation of amiodarone therapy and was negative for thyroid-stimulating hormone receptor antibody. An increased peak velocity of the superior thyroid artery suggested amiodarone-induced thyrotoxicosis type 1. Her thyroid function recovered after combination therapy with methimazole and potassium iodide.