“…These assumptions remain unproven; pediatric anesthetic practice has seen a greater acceptance of the use of potent opioid analgesia where indicated (de Lima et al, 1996). Although local anesthesia alone has obvious advantages (Castilla, 2003), most authors agree that this form of analgesia is a useful supplement but is insufficient alone (Jonas et al, 2003;Monnery et al, 2003).…”