2787
Because of serious side effects of an increase in the QT interval causing torsades de pointes, dofetilide must be initiated with close monitoring of the QT interval in an inpatient setting.
 ( adverse event: increase ,  QT interval causing torsades de pointes: Effect, dofetilide: Treatment, dofetilide: Treatment.Drug) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: adverse event,potential therapeutic event, Arguments type: Treatment.Disorder,Treatment.Time_elapsed,Treatment.Dosage,Subject.Race,Treatment.Drug,Treatment.Route,Subject.Disorder,Treatment.Freq,Treatment,Effect,Subject.Population,Treatment.Duration,Combination.Drug,Subject,Subject.Age,Subject.Gender. 
Text: {0} 
Answer:
 ( adverse event: increase ,  QT interval causing torsades de pointes: Effect, dofetilide: Treatment, dofetilide: Treatment.Drug) 