Evid Based Nurs 8:55 doi:10.1136/ebn.8.2.55
  • Treatment

Review: magnesium prophylaxis after cardiac surgery reduces the risk of arrhythmia and atrial fibrillation

Magnesium prophylaxis v control (placebo or routine care) after cardiac surgery*

Outcomes at 1–30 days Number of trials (n) Weighted event rates RRR (95% CI) NNT (CI)
Magnesium prophylaxis Control
*Abbreviations defined in glossary; weighted event rates, RRR, NNT, and CI calculated from data in article using a random effects model.
Supraventricular arrhythmia 16 (2029) 22% 31% 23% (7 to 37) 12 (8 to 22)
Ventricular arrhythmia 10 (1195) 5% 13% 51% (13 to 73) 13 (7 to 59)
Atrial fibrillation 12 (1649) 19% 28% 29% (7 to 45) 12 (8 to 27)

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