Pre-emptive analgesia for postoperative pain control: a review.

Pain can play an important role at the social and psychological level; hence one of the major goals of anaesthesia is to control and reduce the incidence of postoperative pain. The use of an analgesia before surgical incision may offer one of the most innovative and promising strategies for better pain control throughout the perioperative period. Pre-emptive analgesia refers to pharmacological intervention initiated prior to a painful stimulus in order to inhibit nociceptive mechanisms before they are triggered. Pre-emptive analgesia has three objectives: to reduce pain resulting from the activation of inflammatory mechanisms triggered by surgical incision; to hinder the pain memory response of the central nervous system; and to ensure a good control of postoperative pain in order to avoid the development of chronic pain. The following provides an overview of the scientific rationale for pre-emptive analgesia alongside an overview of published systematic reviews and randomized clinical trials related to this topic.