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MediumEndocrinologyThyrotoxic atrial fibrillationau-amcau-racp

A 60-year-old woman presents with weight loss, heat intolerance and palpitations. She is found to have atrial fibrillation with a heart rate of 150 beats/min and a suppressed TSH with elevated free T4. What is the most appropriate immediate pharmacological therapy for rate control?

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