Magnesium Status and Magnesium Therapy in Cardiac Surgery: A Systematic Review and Meta-analysis Focusing on Arrhythmia Prevention

The authors conducted a meta-analysis of 35 RCTs analyzing the use of IV Mg for the prevention or treatment of arrhythmias following cardiac surgery.  The studies included had significant methodological heterogeneity.

Findings:  Mg use was associated with a reduction in Afib as well as ventricular arrhythmias postop, with a RR of 0.69 (p=0.002) and 0.46 (p=.004), respectively.