• R Ferasatkish, A Dabbagh, M Alavi, G Mollasadeghi, E Hydarpur, A A Moghadam, Z S Faritus, and M Z Totonchi.
• Cardiac Anesthesia Department, Shahid Rajaei Heart Center, Tehran, Iran.
• Acta Anaesthesiol Scand. 2008 Nov 1; 52 (10): 1348-52.

BackgroundPost-operative pain control is one of the greatest concerns for both physicians and patients. In this study, the effect of magnesium sulfate (MgSO(4)) solution infusion on post-operative pain scores and extubation time in patients undergoing elective coronary artery bypass graft (CABG) surgeries was assessed.MethodsIn a double-blind, randomized, placebo-controlled clinical trial, 218 patients scheduled for elective CABG were selected and randomly assigned to two groups. After matching inclusion and exclusion criteria for the patients, intravenous MgSO(4) was administered intraoperatively for one group and placebo to the second group. Except for this, all the cases were similar regarding anesthesia and surgery.ResultsThe MgSO(4) patients were extubated sooner compared with the placebo group. Pain scores reported by the group who received MgSO(4) were less at the 6th, 12th, 18th and 24th hours after the operation; also, they needed less morphine sulfate during this period.ConclusionThe results demonstrated a significantly shortened post-operative time for extubation and reduced acute post-operative pain scores by intravenous MgSO(4) infusion during elective CABG surgery.

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