system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Dofetilide belong to?
assistant
The correct answer is  Ibutilide, dofetilide, sotalol, amiodarone are class 3 agents they are potassium channel blockers- they r broad spectrum antiarrhythmic agents they increase QT interval