Arrhythmias USMLE Step 1 Practice Question
A 45-year-old woman with paroxysmal atrial fibrillation is started on flecainide for rhythm control. She has a history of hypertension but normal ventricular function. Three weeks later, she presents with syncope. ECG shows a wide-complex tachycardia at 160 bpm that does not terminate with adenosine. Which of the following is the most likely complication?
Answer choices
- ASinus tachycardia
- BAtrial flutter with 1:1 conduction
- CDecompensated heart failure
- DAtrioventricular reentrant tachycardia
- EFlecainide-induced ventricular tachycardiaCorrect answer
- FDrug-induced Brugada pattern with coved ST elevation in right precordial leads
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