The Effect of Intravenous (IV) Patient Controlled Analgesic (PCA) With Ketorolac or Fentanyl Combined With Caudal Block for Postoperative Analgesia in Small Children Undergoing Intravesical Ureteroneocystostomy

Inclusion Criteria: * Pediatric patients scheduled for elective ureteroneocystostomy were enrolled. Exclusion Criteria: * History of allergy to aspirin or NSAIDs * Peptic ulcer disease, and renal function impairment. * And local infection foci on back, spinal anomalies * Infectious diseases * Neurologic disorders * Seizures and coagulopathies were excluded for sacral epidural block.