1907
Recently, it has been reported that terfenadine and astemizole, which have antiallergic actions similar to those of oxatomide, show side effects on the cardiovascular system, such as QT prolongation, ventricular arrhythmia and cardiac arrest.
 ( adverse event: show ,  side effects on the cardiovascular system, such as QT prolongation, ventricular arrhythmia and cardiac arrest: Effect, terfenadine and astemizole: Treatment, terfenadine: Treatment.Drug, astemizole: Treatment.Drug, terfenadine: Combination.Drug, astemizole: Combination.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: show ,  side effects on the cardiovascular system, such as QT prolongation, ventricular arrhythmia and cardiac arrest: Effect, terfenadine and astemizole: Treatment, terfenadine: Treatment.Drug, astemizole: Treatment.Drug, terfenadine: Combination.Drug, astemizole: Combination.Drug) 