| Study characteristics |
| Methods |
Single‐blind, randomized, controlled |
| Participants |
On‐pump CABG, CABG + mitral valve |
| Interventions |
Magnesium vs. propranolol vs. control |
| Outcomes |
AF, atrial flutter or SVT lasting more than 5 minutes and requiring treatment; Mortality; CV Mortality; LOS |
| Follow‐Up |
Hospital discharge |
| Concurrent Antiarrhythmic Medications |
Beta‐blockers, digoxin |
| Notes |
|
| Risk of bias |
| Bias |
Authors' judgement |
Support for judgement |
| Random sequence generation (selection bias) |
Low risk |
Random number table |
| Allocation concealment (selection bias) |
Unclear risk |
Insufficient information |
| Blinding of participants and personnel (performance bias)
All outcomes |
Unclear risk |
No mention of placebo use |
| Blinding of outcome assessment (detection bias)
All outcomes |
Low risk |
AF assessed by blinded physician |
| Incomplete outcome data (attrition bias)
All outcomes |
Low risk |
No missing outcome data |
| Selective reporting (reporting bias) |
Low risk |
All outcomes reported |
| Intention‐to‐treat analysis |
High risk |
No |
