Effect of magnesium sulfate on ventricular rate control in atrial fibrillation.

Abstract:

STUDY OBJECTIVES:The objectives of this study were to assess the efficacy of parenteral magnesium sulfate (MgSO4), digoxin, and combined MgSO4-digoxin therapies in acutely lowering ventricular rates in patients with newly recognized atrial fibrillation. DESIGN:A randomized, double-blinded, placebo-controlled clinical study. SETTING:US Army tertiary care facility. PARTICIPANTS:Fifteen adults (mean age, 62 +/- 19 years) presenting with newly recognized atrial fibrillation and rapid ventricular rate (more than 99). INTERVENTIONS:Patients were given an initial parenteral MgSO4 bolus with continuous infusion or placebo. After 30 minutes, all patients were given 0.5 mg IV digoxin and followed for 3.5 hours. MEASUREMENTS AND MAIN RESULTS:Ventricular rates were obtained at baseline, every 5 minutes for the first 30 minutes, and then every 30 minutes for 3.5 hours. At 5 minutes, ventricular rates decreased 16 +/- 7% (P < .02) with MgSO4; this was comparable with rate control with digoxin (18 +/- 9%) at 4 hours. Rate control tended (26 +/- 7%) to improve with combined therapy. CONCLUSION:Parenteral MgSO4 may be useful in the acute management of rapid ventricular rates in patients with atrial fibrillation.

journal_name

Ann Emerg Med

authors

Hays JV,Gilman JK,Rubal BJ

doi

10.1016/s0196-0644(94)70163-6

subject

Has Abstract

pub_date

1994-07-01 00:00:00

pages

61-4

issue

1

eissn

0196-0644

issn

1097-6760

pii

S0196064494001393

journal_volume

24

pub_type

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