*median; Abbreviations: AF=atrial fibrillation, CPB=cardiopulmonary
bypass, ECG=electrocardiogram, LAAO=left atrial appendage occlusion,
m=month, MV=mitral valve, NR=not reported, NRSI=nonrandomized study,
PVI=pulmonary vein isolation, RCT=randomized controlled trial, XCT=cross
clamp time
Table 2 . Randomized controlled trials: main characteristics and
risk of bias assessment.