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The Effects of Postoperative Brachial Plexus Block Using MgSO(4) on the Postoperative Pain after Upper Extremity

In Gyu Choi1, Young Soon Choi, Yong Ho Kim

  • 1Department of Anesthesiology and Pain Medicine, Kwandong University College of Medicine, Goyang, Korea.

The Korean Journal of Pain
|September 22, 2011
PubMed
Abstract

Insights

Magnesium sulfate (MgSO(4)) did not improve postoperative pain relief or reduce opioid use when added to axillary brachial plexus blocks for upper extremity surgery. Further research is needed to explore alternative analgesia methods.

Area of Science:

  • Anesthesiology
  • Pain Management
  • Pharmacology

Background:

  • Brachial plexus blocks are used for upper extremity surgery anesthesia and analgesia.
  • The efficacy of magnesium sulfate (MgSO(4)) in brachial plexus blocks for postoperative pain is not well-documented.

Purpose of the Study:

  • To evaluate the effectiveness of adding MgSO(4) to axillary brachial plexus blocks for postoperative analgesia.

Main Methods:

  • A randomized study involving 38 patients undergoing upper extremity surgery.
  • Patients received either ropivacaine with saline or ropivacaine with MgSO(4) via axillary brachial plexus block.
  • Postoperative pain (VAS), opioid consumption, and side effects were monitored.

Main Results:

  • No significant differences in visual analogue scale (VAS) pain scores between groups.
  • Opioid consumption was comparable between the ropivacaine-saline and ropivacaine-MgSO(4) groups.
  • Nausea occurred in three patients in each treatment group.

Conclusions:

  • Axillary brachial plexus block with MgSO(4) did not provide superior postoperative analgesia compared to standard ropivacaine block.
  • Adding MgSO(4) to brachial plexus blocks did not reduce postoperative pain or opioid requirements.
Keywords:
analgesiabrachial plexusmagnesium sulfateupper extremity

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