Objective To systematically evaluate the effect of ultrasound-guided technique in radial artery puncture in adults. Methods Randomized controlled trials on ultrasound guided and palpation in adult radial artery puncture were searched in CNKI,Wanfang,VIP,SinoMed,PubMed,CINAHL,Cochrane Library,Web of Science,Embase,and database of clinical trials. RevMan 5.0 software was used for performing a Meta-analysis. Results Totally 11 studies involving 2 284 participants were enrolled. Results of this meta-analysis suggested that ultrasound guided technique can improve the success rate of the first puncture in adult radial artery puncture,[OR=3.89,95%CI（2.52,6.01）,P< 0.001],reduce the average number of puncture[MD=-0.98,95%CI（-1.73,-0.23）,P=0.01],reduce the incidence of hematoma[OR=0.28,95%CI（0.09,0.88）,P=0.03],reduce the number of catheters used[OR=-1.00,95%CI（-1.81,-0.19）,P=0.02]. Conclusion Current evidence indicates that ultrasound-guided radial artery puncture in adults could significantly increase the first success rate,reduce the incidence of hematoma and the number of catheters used.
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