Fig. 2. Observational pain scores (OPS) for both groups. Caudal = caudal administration of S (+)-ketamine; I.M. = intramuscular administration of S (+)-ketamine. *Mean OPS was significantly lower (P < 0.05) after caudal injection of S (+)-ketamine.
Fig. 2. Observational pain scores (OPS) for both groups. Caudal = caudal administration of S (+)-ketamine; I.M. = intramuscular administration of S (+)-ketamine. *Mean OPS was significantly lower (P < 0.05) after caudal injection of S (+)-ketamine.
