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 59-year-old woman presents to the emergency department after experiencing a syncopal episode. The patient has had several similar episodes in the last two weeks and has also been more lightheaded and fatigued than usual. The syncopal events are abrupt and are not preceded by symptoms. Past medical history is significant for ischemic cardiomyopathy with an ejection fraction of 15%, major depressive disorder, opioid use disorder, and fibromyalgia. Current medications include carvedilol, lisinopril, methadone, ondansetron, quetiapine, and sertraline. Vital signs are obtained by the nursing staff while you examine the patient. The patient appears uncomfortable. There are no cardiac murmurs on auscultation. The patient’s radial pulse is irregular and rapid. An electrocardiogram is ordered. Which of the following arrhythmias is most likely to be seen on ECG?  

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