1. I.V. infusion of magnesium sulphate during spinal anaesthesia improves postoperative analgesia 
J.-Y. Hwang, H.-S. Na, Y.-T. Jeon, Y.-J. Ro, C.-S. Kim, S.-H. Do 
British Journal of Anaesthesia 
Volume 104, Issue 1, Pages (January 2010)
DOI: /bja/aep334
Copyright © 2010 The Author(s) Terms and Conditions

2. Fig 1
Perioperative mean arterial pressure. Group M, Mg group; Group S, saline group. Values are presented as means (sd). Group M patients had a lower mean arterial pressure except immediately after the induction of spinal anaesthesia. No significant difference was observed between the two groups during the perioperative period.
British Journal of Anaesthesia  , 89-93DOI: ( /bja/aep334)
Copyright © 2010 The Author(s) Terms and Conditions

3. Fig 2
Perioperative heart rate. Group M, Mg group; Group S, saline group. Values are presented as means (sd). Group M patients had a lower heart rate except before the induction of spinal anaesthesia. No significant difference was observed between the two groups during the perioperative period.
British Journal of Anaesthesia  , 89-93DOI: ( /bja/aep334)
Copyright © 2010 The Author(s) Terms and Conditions

4. Fig 3
The total amount of PCA drug. The concentrations of morphine and ketorolac are 0.7 and 1.5 mg ml−1, respectively. Group M, Mg group; Group S, saline group. Values are presented as means (sd). The error bars indicate 1 sd.*P<0.05 compared with Group S.
British Journal of Anaesthesia  , 89-93DOI: ( /bja/aep334)
Copyright © 2010 The Author(s) Terms and Conditions