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In the second case, five cardiac arrests due to ventricular tachycardia and fibrillation occurred during several hours after beginning a trial of bretylium maintenance therapy for complex ventricular ectopy.
 In the second case: Subject; five cardiac arrests due to ventricular tachycardia and fibrillation: Effect; several hours after beginning a trial of bretylium maintenance therapy: Treatment; complex ventricular ectopy: Treatment.Disorder; several hours after: Treatment.Time_elapsed; bretylium: Treatment.Drug
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: adverse event 
  Option: Treatment.Freq, Subject.Population, Combination.Drug, Subject.Gender, Treatment.Duration, Subject, Effect, Treatment, Treatment.Disorder, Subject.Disorder, Treatment.Route, Subject.Race, Treatment.Time_elapsed, Treatment.Dosage, Subject.Age, Treatment.Drug 
Text: {0} 
Answer:
 In the second case: Subject; five cardiac arrests due to ventricular tachycardia and fibrillation: Effect; several hours after beginning a trial of bretylium maintenance therapy: Treatment; complex ventricular ectopy: Treatment.Disorder; several hours after: Treatment.Time_elapsed; bretylium: Treatment.Drug