Dexmedetomidine Plus Low Dose Morphine Versus Standard Dose of Morphine in PCA in Children .

Patient-controlled analgesia (PCA) permits patients to self-administer small doses of opioid analgesics intravenously or subcutaneously at frequent intervals. PCA is used in the management of moderate-to-severe pain. Patient-controlled analgesia (PCA) is now used in children as young as 5 yr for the treatment of postoperative pain.