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?
- A)Sinus tachycardia
- B)Atrial flutter with 1:1 conduction
- C)Decompensated heart failure
- D)Atrioventricular reentrant tachycardia
- E)Flecainide-induced ventricular tachycardiaGABARITO
Explicação
Flecainide is a Class IC antiarrhythmic that slows conduction. In patients with structural heart disease or certain risk factors, it can paradoxically precipitate ventricular arrhythmias (proarrhythmic effect), including VT and VF. The syncope, wide-complex mo... Ver explicação completa e trilha adaptativa →