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An 83-year-old woman with paroxysmal atrial fibrillation, treated with Flecainide 150 mg twice a day, was admitted with increasing confusion, hallucinations and collapse, but without chest pain. On examination, she was confused, with slurred speech, hypotensive (blood pressure (BP) 84/60) and a regular pulse of 90 bpm. Her admission ECG is shown in figure 1 …
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