What is it about?

Background 1: Long-term amiodarone administration may cause hypothyroidism, or less frequently, hyperthyroidism. The chronic effect of amiodarone on thyroid function has generally been reported to occur from 2 weeks to approximately 3 years after the initiation of amiodarone treatment. However, the effects of short-term amiodarone administration remain elusive.

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Why is it important?

Answer 1; This case is the first report of the effects of short-term administration of amiodarone in TS. Background 2: The most common rhythm disturbance in TS is sinus tachycardia or atrial fibrillation. Answer 2; The first case report of multifocal atrial tachycardia caused by TS.

Perspectives

This is the first case report of TS-associated MAT and highlights the clinical importance of high suspicion of TS in de novo heart failure with any tachyarrhythmia or Dilated cardiomyopathy of unknown etiology and the potential effects of short-term amiodarone administration in the treatment of TS.

Chief Director Hiroyuki Yamamoto
Narita-Tomisato Tokusyukai Hospital

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This page is a summary of: Delayed diagnosis of dilated thyrotoxic cardiomyopathy with coexistent multifocal atrial tachycardia: a case report, BMC Cardiovascular Disorders, March 2021, Springer Science + Business Media, DOI: 10.1186/s12872-021-01935-5.
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