Intravenous Magnesium Sulphate for Analgesia after Caesarean Section: A Systematic Review

Objective. To summarise the evidence for use of intravenous magnesium for analgesic effect in caesarean section patients. Background. Postcaesarean pain requires effective analgesia. Magnesium, an N-methyl-D-aspartate receptor antagonist and calcium-channel blocker, has previously been investigated...

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Main Authors: Andrew McKeown, Vyacheslav Seppi, Raymond Hodgson
Format: Article
Language:English
Published: Wiley 2017-01-01
Series:Anesthesiology Research and Practice
Online Access:http://dx.doi.org/10.1155/2017/9186374
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author Andrew McKeown
Vyacheslav Seppi
Raymond Hodgson
author_facet Andrew McKeown
Vyacheslav Seppi
Raymond Hodgson
author_sort Andrew McKeown
collection DOAJ
description Objective. To summarise the evidence for use of intravenous magnesium for analgesic effect in caesarean section patients. Background. Postcaesarean pain requires effective analgesia. Magnesium, an N-methyl-D-aspartate receptor antagonist and calcium-channel blocker, has previously been investigated for its analgesic properties. Methods. A systematic search was conducted of PubMed, Scopus, MEDLINE, Cochrane Library, and Google Scholar databases for randomised-control trials comparing intravenous magnesium to placebo with analgesic outcomes in caesarean patients. Results. Ten trials met inclusion criteria. Seven were qualitatively compared after exclusion of three for unclear bias risk. Four trials were conducted with general anaesthesia, while three utilised neuraxial anaesthesia. Five of seven trials resulted in decreased analgesic requirement postoperatively and four of seven resulted in lower serial visual analogue scale scores. Conclusions. Adjunct analgesic agents are utilised to improve analgesic outcomes and minimise opioid side effects. Preoperative intravenous magnesium may decrease total postcaesarean rescue analgesia consumption with few side effects; however, small sample size and heterogeneity of methodology in included trials restricts the ability to draw strong conclusions. Therefore, given the apparent safety and efficacy of magnesium, its role as an adjunct analgesic in caesarean section patients should be further investigated with the most current anaesthetic techniques.
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spelling doaj-art-5e8de1fd378a40a5a9c89b94f098e1bf2025-08-20T03:19:28ZengWileyAnesthesiology Research and Practice1687-69621687-69702017-01-01201710.1155/2017/91863749186374Intravenous Magnesium Sulphate for Analgesia after Caesarean Section: A Systematic ReviewAndrew McKeown0Vyacheslav Seppi1Raymond Hodgson2Rural Clinical School, University of New South Wales, Sydney, AustraliaRural Clinical School, University of New South Wales, Sydney, AustraliaRural Clinical School, University of New South Wales, Sydney, AustraliaObjective. To summarise the evidence for use of intravenous magnesium for analgesic effect in caesarean section patients. Background. Postcaesarean pain requires effective analgesia. Magnesium, an N-methyl-D-aspartate receptor antagonist and calcium-channel blocker, has previously been investigated for its analgesic properties. Methods. A systematic search was conducted of PubMed, Scopus, MEDLINE, Cochrane Library, and Google Scholar databases for randomised-control trials comparing intravenous magnesium to placebo with analgesic outcomes in caesarean patients. Results. Ten trials met inclusion criteria. Seven were qualitatively compared after exclusion of three for unclear bias risk. Four trials were conducted with general anaesthesia, while three utilised neuraxial anaesthesia. Five of seven trials resulted in decreased analgesic requirement postoperatively and four of seven resulted in lower serial visual analogue scale scores. Conclusions. Adjunct analgesic agents are utilised to improve analgesic outcomes and minimise opioid side effects. Preoperative intravenous magnesium may decrease total postcaesarean rescue analgesia consumption with few side effects; however, small sample size and heterogeneity of methodology in included trials restricts the ability to draw strong conclusions. Therefore, given the apparent safety and efficacy of magnesium, its role as an adjunct analgesic in caesarean section patients should be further investigated with the most current anaesthetic techniques.http://dx.doi.org/10.1155/2017/9186374
spellingShingle Andrew McKeown
Vyacheslav Seppi
Raymond Hodgson
Intravenous Magnesium Sulphate for Analgesia after Caesarean Section: A Systematic Review
Anesthesiology Research and Practice
title Intravenous Magnesium Sulphate for Analgesia after Caesarean Section: A Systematic Review
title_full Intravenous Magnesium Sulphate for Analgesia after Caesarean Section: A Systematic Review
title_fullStr Intravenous Magnesium Sulphate for Analgesia after Caesarean Section: A Systematic Review
title_full_unstemmed Intravenous Magnesium Sulphate for Analgesia after Caesarean Section: A Systematic Review
title_short Intravenous Magnesium Sulphate for Analgesia after Caesarean Section: A Systematic Review
title_sort intravenous magnesium sulphate for analgesia after caesarean section a systematic review
url http://dx.doi.org/10.1155/2017/9186374
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