Παρασκευή 8 Δεκεμβρίου 2017

Ultra–low-dose Naloxone as an Adjuvant to Patient Controlled Analgesia (PCA) With Morphine for Postoperative Pain Relief Following Lumber Discectomy: A Double-blind, Randomized, Placebo-controlled Trial

imageBackground: Lumbar discectomy is one of the most commonly performed neurosurgical procedures. Many patients experience postoperative pain after lumbar discectomy. This study evaluated the effect of ultra–low-dose naloxone infusion on pain intensity after lumbar discectomy in individuals receiving patient-controlled analgesia (PCA) with morphine. Materials and Methods: In a double-blind, randomized, controlled trial, a total of 80 patients scheduled for open discectomy was randomly assigned to receive naloxone (group N) or placebo (group P). After surgery, all patients were connected to a morphine PCA pump. Both groups received 500 mL of normal saline using a continuous infusion pump through a separate intravenous line for 24 hours. However, group N received a total dose of 0.25 μg/kg/h naloxone, which was added to the normal saline infusion. All patients were asked to grade the intensity of their pain, severity of nausea, vomiting, and pruritus on a 0 to 10 visual analog scale before being discharged from the postanesthesia care unit and at 1, 6, 12, and 24 hours postoperatively. Results: It was observed that both groups had a statistically significant (P

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