La tunisie Medicale - 2021 ; Vol 99 ( n°02 ) : 225-231
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Summary

Introduction: Rapid Atrial fibrillation (AF) is a common arrhythmia in emergency department (ED) that requires an urgent control of ventricular rate.
Aim: To evaluate the safety and efficiency of magnesium sulfate as an adjunctive therapy in addition to usual care for rapid AF in emergency department.   
Methods: This was a prospective, randomized, double-blind study. We included patients who presented to ED with rapid AF >110 batt/min. Group A received 3g of magnesium in 100mL of glucose solution and group B received 100 ml of glucose solution. Primary endpoint was slowing the ventricular rates to less than 110 beats/ min in the first 12 hours of management.   
Results: One hundred and three patients were included. Fifty-three patients in group A with a mean heart rate of 146 ± 18 beats / min and fifty patients in group B with a mean heart rate of 143 ± 17 beats / min. A significantly greater number of patients slowed down their ventricular rate in group A during the first hour of management (p = 0.02). After 12 hours, mean heart rate was significantly lower in group A (p = 0.04).
Conclusion: The use of 3 g of magnesium sulfate slowed down the ventricular rate of a larger number of patients with rapid AF in the first hour of management. Only minor adverse effects were registered.

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