Atrial fibrillation and atrial flutter Quiz: Ace Your Exams

Get ready to dominate your medical and nursing exams by using our dynamic quizzes to elevate your knowledge and increase your confidence. Whether you're gearing up for the USMLE®, COMLEX®, or your next in-class assessment, Osmosis quizzes tackle key topics in pathology, diagnostics, and treatment approaches. By honing in on clinical readiness and decision-making, we make sure the knowledge you gain empowers you both in the classroom and in real-world practice. Jump in and supercharge your exam prep!

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A 68-year-old man presents to the emergency department for evaluation of 2-hours of palpitations, chest discomfort, and shortness of breath. He has a past medical history of hypertension and diabetes mellitus. Temperature is 37°C (98.6°F), blood pressure is 85/60 mm Hg, heart rate is 150 beats per minute, respiratory rate is 22 breaths per minute, and oxygen saturation is 92% on room air. He appears anxious, pale, and uncomfortable. Cardiac auscultation reveals an irregular rhythm. Electrocardiogram (ECG) shows atrial fibrillation with rapid ventricular response. Which of the following is the best next step in management?

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Transesophageal echocardiogram

Unsynchronized cardioversion

Intravenous antibiotics and fluids

Oral metoprolol

Synchronized cardioversion