A randomized trial of magnesium in the emergency department treatment of children with asthma

Study Objective: Magnesium sulfate has been shown to benefit asthmatic children and adults with poor responses to initial β2-agonist therapy in the emergency department. We sought to determine whether the routine early administration of high-dose magnesium would benefit moderate to severely ill chil...

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Published in:	Annals of emergency medicine Vol. 36; no. 6; pp. 572 - 578
Main Authors:	Scarfone, Richard J., Loiselle, John M., Joffe, Mark D., Mull, Colette C., Stiller, Sonya, Thompson, Kim, Gracely, Edward J.
Format:	Journal Article
Language:	English
Published:	New York, NY Mosby, Inc 01-12-2000 Elsevier
Subjects:	Adolescent Asthma - diagnosis Asthma - drug therapy Biological and medical sciences Child Child, Preschool Chronic obstructive pulmonary disease, asthma Confidence Intervals Double-Blind Method Emergency Service, Hospital Emergency Treatment - methods Female Humans Infusions, Intravenous Magnesium Sulfate - therapeutic use Male Medical sciences Pneumology Probability Reference Values Respiratory Function Tests Severity of Illness Index Treatment Outcome Human Magnesium sulfate Respiratory disease Acute Adjuvant treatment Inorganic element Asthma Chemotherapy Hospital ward Obstructive pulmonary disease Emergency High dose Child
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Summary:	Study Objective: Magnesium sulfate has been shown to benefit asthmatic children and adults with poor responses to initial β2-agonist therapy in the emergency department. We sought to determine whether the routine early administration of high-dose magnesium would benefit moderate to severely ill children with acute asthma. Methods: This was a randomized, double-blind, placebo-controlled trial of 54 children 1 to 18 years of age who presented to the ED of a tertiary care children’s hospital with a moderate to severe asthma exacerbation. After receiving a nebulized albuterol treatment (0.15 mg/kg) and methylprednisolone (1 mg/kg), patients were randomly assigned to receive either 75 mg/kg of magnesium sulfate (maximum 2.5 g) or placebo. Thereafter, all patients were treated with frequent nebulized albuterol following a structured protocol. The main outcome was degree of improvement as assessed by Pulmonary Index scores over 120 minutes. Secondary outcomes included hospitalization rates and time required to meet discharge criteria. Results: The mean change in Pulmonary Index score from baseline to 120 minutes was 2.83 for the magnesium group compared with 2.66 for the placebo group (95% confidence interval –1.24 to 1.60). Eleven (46%) of 24 magnesium-treated patients were hospitalized compared with 16 (53%) of 30 in the placebo group (95% confidence interval –19% to 34%). There were no statistically significant differences between the groups with respect to time required to meet discharge criteria. Conclusion: The routine administration of high-dose magnesium to moderate to severely ill children with asthma, as an adjunct to initial treatment with albuterol and corticosteroids, was not efficacious. [Scarfone RJ, Loiselle JM, Joffe MD, Mull CC, Stiller S, Thompson K, Gracely EJ. A randomized trial of magnesium in the emergency department treatment of children with asthma. Ann Emerg Med. December 2000;36:572-578.]
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 ObjectType-News-3 content type line 23
ISSN:	0196-0644 1097-6760
DOI:	10.1067/mem.2000.111060