“… MgSO4 or MgCl2 infused at a dose rate of 8 mg.kg-1.min-1 for 20 … the duration of arrhythmia (100% and 80%, respectively) following a 4-microgram/kg injection of epinephrine and a significant threefold reduction in arrhythmia duration … 8- or 16-micrograms/kg injection of epinephrine.”