• Acta Anaesthesiol Scand · Sep 2009

    Randomized Controlled Trial

    Intravenous magnesium sulfate for post-operative pain in patients undergoing lower limb orthopedic surgery.

    • A Dabbagh, H Elyasi, S S Razavi, M Fathi, and S Rajaei.
    • Anesthesiology Department, Anesthesiology Research Center, Shahid Beheshti University, M.C. Tehran, Iran. alidabbagh@yahoo.com
    • Acta Anaesthesiol Scand. 2009 Sep 1;53(8):1088-91.

    IntroductionThis study looks at the effect of supplementary intravenous magnesium sulfate on acute pain when administered in patients undergoing lower limb orthopedic surgery using spinal anesthesia with bupivacaine.Method And MaterialsIn this double-blind, randomized, placebo-controlled clinical trial, 60 patients were selected and randomly divided into two groups. Efforts were made to place both groups under the same method of anesthesia. One group received 8 mg/kg intravenous magnesium sulfate, started before the incision and continued up to the end of the surgical procedure, using a 50 ml syringe, via a peripheral large bore catheter; the second group received the same volume of placebos using the same method. To present the results, mean (+/- SD) was used; a P value of <0.05 was considered significant.ResultsThere was no difference between the two groups in terms of the basic variables. Pain reported by the first group that received magnesium sulfate was significantly less at the first, third, sixth and 12th hours after the operation in comparison with the group that received placebo. Also, the intravenous morphine requirements in the first 24 h after the surgery were less in the magnesium group (4.2 +/- 1.6 mg) than in the control group (9.8 +/- 2.1 mg).ConclusionIntravenous magnesium sulfate can serve as a supplementary analgesic therapy to suppress the acute post-operative pain, leading to less morphine requirements in the first 24 h.

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    This article appears in the collection: Magnesium the new 'roid.

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