Which medication among the listed antiarrhythmics has the brand name Tikosyn?

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Multiple Choice

Which medication among the listed antiarrhythmics has the brand name Tikosyn?

Explanation:
Tikosyn is the brand name for dofetilide. Dofetilide is a pure class III antiarrhythmic that prolongs repolarization by blocking the rapid component of the delayed rectifier potassium current, helping to maintain sinus rhythm in atrial fibrillation or flutter. The other drugs have different brand names: amiodarone is Cordarone/Pacerone, dronedarone is Multaq, and sotalol is Betapace. Dofetilide requires careful monitoring for QT prolongation and torsades de pointes, often started in a controlled setting with electrolyte and ECG monitoring.

Tikosyn is the brand name for dofetilide. Dofetilide is a pure class III antiarrhythmic that prolongs repolarization by blocking the rapid component of the delayed rectifier potassium current, helping to maintain sinus rhythm in atrial fibrillation or flutter. The other drugs have different brand names: amiodarone is Cordarone/Pacerone, dronedarone is Multaq, and sotalol is Betapace. Dofetilide requires careful monitoring for QT prolongation and torsades de pointes, often started in a controlled setting with electrolyte and ECG monitoring.

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