1831
After induction of general anesthesia and administration of a standard dose of intravenous esmolol hydrochloride, her cardiac rhythm progressed to asystole.
 ( adverse event: After ,  her: Subject, her: Subject.Gender, asystole: Effect, induction of general anesthesia and administration of a standard dose of intravenous esmolol hydrochloride: Treatment, intravenous: Treatment.Route, esmolol hydrochloride: Treatment.Drug, general anesthesia: Treatment.Drug, general anesthesia: Combination.Drug, esmolol hydrochloride: 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: After ,  her: Subject, her: Subject.Gender, asystole: Effect, induction of general anesthesia and administration of a standard dose of intravenous esmolol hydrochloride: Treatment, intravenous: Treatment.Route, esmolol hydrochloride: Treatment.Drug, general anesthesia: Treatment.Drug, general anesthesia: Combination.Drug, esmolol hydrochloride: Combination.Drug) 