• J Clin Anesth · Jun 2017

    Review Meta Analysis

    Influence of the perioperative administration of magnesium sulfate on the total dose of anesthetics during general anesthesia. A systematic review and meta-analysis.

    Perioperative magnesium reduces propofol induction and maintenance doses, and similarly reduces neuromuscular drug needs.

    • Laura Rodríguez-Rubio, Eduardo Nava, Julián Solís García Del Pozo, and Joaquín Jordán.
    • Grupo de Neurofarmacología, Instituto de Investigación en Discapacidades Neurológicas-UCLM, Albacete, Spain; Servicio de Anestesia y Reanimación, Hospital de Almansa, Albacete, Spain. Electronic address: lrrubio@sescam.com.
    • J Clin Anesth. 2017 Jun 1; 39: 129-138.

    BackgroundMagnesium sulfate displays numerous characteristics that make it a useful drug in anesthesiology (N-methyl-d-aspartate receptor antagonist, vasodilator, antiarrhythmic, inhibitor of catecholamine release and of acetylcholine in the terminal motor plate). The perioperative use of this drug as an adjuvant capable of decreasing the required dose of anesthetics, has been proposed.ObjectivesTo assess the influence of intravenous magnesium sulfate administration during general anesthesia on the overall dose of required anesthetics.DesignA systematic review of controlled randomized trials and meta-analysis.Data SourcesAn electronic bibliography search in MEDLINE and in the Cochrane Database of Controlled trials (CENTRAL) up to 2015.Study Eligibility Criteria, Participants And InterventionsRandomized, double-blind trials relating to general anesthesia in elective surgery using intravenous magnesium sulfate that provide information about the anesthetic requirements in ASA I and II patients.Results20 clinical trials were selected for the qualitative analysis and 19 for the quantitative one. The use of perioperative intravenous magnesium sulfate reduces the requirement of the anesthetic, propofol during induction (-28.52mg; CI 95% -35.22-1.82; p<0.001) and maintenance (-213.56mg; CI 95% -322.93, -104.18; p<0.001) of anesthesia. Additionally, magnesium sulfate reduces the requirement of neuromuscular non-despolarizing blocking agents (-2.99mg; CI 95% -44.47, -1.99; p<0.001) and the intraoperative consumption of fentanile(-53.57 mcg; CI 95% -75.01, -32.12; p<0.001).ConclusionsWe conclude that perioperative magnesium sulfate acts as a coadjuvant drug capable of reducing anesthetic requirements.Copyright © 2017 Elsevier Inc. All rights reserved.

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



    Perioperative magnesium reduces propofol induction and maintenance doses, and similarly reduces neuromuscular drug needs.

    Daniel Jolley  Daniel Jolley
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