[Systemic analgesia after peripheral block].

Abstract

Over the past few years, increasing emphasis has been placed on the need to improve the management of acute pain. Despite a growing trend in acute pain management, many difficulties are still present for the treatment of postoperative pain. Loco-regional techniques together with an effective pain management should accelerate rehabilitation, decrease risk of postoperative complications and speed return to normal activities. A multimodal approach should be used for a reduction of pharmacological side effects, improving pain reduction. The association between NSAIDs and opioids permits reduction of full dose opioids with better pain relief and less side effects. If NSAIDs are contraindicated, acetaminophen is an alternative, though considered by someone to be an NSAID It's action is believed to result from inhibition of prostaglandin synthesis within the central nervous system. It doesn't cause gastrointestinal ulceration or bleeding, but we have to note that large amounts may lead to hepatic necrosis. Newer NSAIDs (COX-2 inhibitors), affect mainly COX-2, and appear to be associated with less adverse effect. Rofecoxib showed a reduction of morphine consuming after spinal fusion and has been admitted by FDA for the treatment of post operative pain. Newer methods of pain relief, as patient controlled analgesia (PCA), can provide excellent and safe pain relief. When high-tech options such as PCA are used, patients need a management by an anesthesiologist-based acute pain service (APS), allowing a better pain relief with less side effects compared to patients supervised by less experienced medical staff.