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A 71-year-old man is monitored after an inferior ST-elevation myocardial infarction. He becomes dizzy but remains conscious; the ECG shows regular P waves at 84 per minute and broad QRS complexes at 36 per minute. The P waves continue at their own rate and have no consistent relationship with the QRS complexes. Which one of the following rhythm diagnoses is present?

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Acute Coronary SyndromesArrhythmiasElectrocardiography

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