We performed a randomized nonblinded, cross-over comparison of patient-controlled analgesia (PCA) with conventional intramuscular analgesia in 10 adolescents (13-18 years) undergoing spinal fusion for idiopathic scoliosis. PCA use afforded more effective pain control (p < 0.02) on a 10-point linear pain intensity scale than did intramuscular injections, while causing an equal amount of sedation and no side effects. PCA appears to be a promising technique for providing postoperative pain relief in this group of adolescents. Further studies are needed to define its role for other pediatric conditions.

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