984
Based on this experience, we suggest that low-dose ketamine added to propofol may be associated with prevention of EA in children with a history of EA with propofol TIVA.
 children with a history of EA with propofol TIVA: Subject; EA with propofol TIVA: Subject.Disorder; children: Subject.Age; low-dose ketamine added to propofol: Treatment; EA: Treatment.Disorder; ketamine: Treatment.Drug; propofol: Treatment.Drug; low-dose: Treatment.Dosage; ketamine: Combination.Drug; propofol: Combination.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: potential therapeutic event 
  Option: Treatment.Freq, Subject.Population, Combination.Drug, Subject.Gender, Treatment.Duration, Subject, Effect, Treatment, Treatment.Disorder, Treatment.Time_elapsed, Subject.Disorder, Subject.Race, Treatment.Route, Treatment.Dosage, Subject.Age, Treatment.Drug 
Text: {0} 
Answer:
 children with a history of EA with propofol TIVA: Subject; EA with propofol TIVA: Subject.Disorder; children: Subject.Age; low-dose ketamine added to propofol: Treatment; EA: Treatment.Disorder; ketamine: Treatment.Drug; propofol: Treatment.Drug; low-dose: Treatment.Dosage; ketamine: Combination.Drug; propofol: Combination.Drug