Drug comparisons
Quinidine vs Dofetilide
Compare Quinidine vs Dofetilide: class Ia vs class III antiarrhythmics for atrial fibrillation. Distinct ion-channel effects, QT risks, and monitoring needs.
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Clinical context
This comparison occurs in cardiology when selecting antiarrhythmic therapy for atrial fibrillation or other supraventricular tachyarrhythmias.
Bottom line
Neither is universally superior; Dofetilide carries a black-box warning and hospital-initiation requirement while Quinidine is an older class Ia agent chosen per individual arrhythmia and risk profile.
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