AIMTo compare the amount of contrast used during percutaneous coronary intervention (PCI) via trans-radial access (TRA) vs trans-femoral access (TFA).METHODSScientific databases and websites were searched for:randomizedcontrolledtrials (RCTs). Data were extracted by two independent reviewers and was summarized as the weighted mean difference (WMD) of contrast used with a 95%CI using a random-effects model.RESULTSThe meta-analysis included 13 RCTs with a total of 3165 patients. There was no difference between the two strategies in the amount of contrast used (WMD = - 0.65 mL, 95%CI: -10.94-9.46 mL; P = 0.901).CONCLUSIONThis meta-analysis shows that in patients undergoing PCI, the amount of contrast volume used was not different between TRA and TFA.
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