Approach to tachycardia 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 63-year-old man presents to the emergency department with lightheadedness and fatigue. Electrocardiogram is performed and the patient is found to be in atrial fibrillation with a heart rate of 84 beats per minute. Thirty minutes later the patient becomes lightheaded and develops chest pressure. Repeat electrocardiogram shows atrial fibrillation with a heart rate of 156 beats per minute. Temperature is 37.0 ºC (98.6 ºF), blood pressure is 78/55 mmHg, and respiratory rate is 18/min. On examination, the patient appears confused and uncomfortable. Peripheral IV access is established. Which of the following is the best next step in management?  

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