BACKGROUND: Use of ultrasound-guided techniques to facilitate central venous cannulation (CVC) may reduce the risk of misplacement and complications. A meta-analysis was conducted to compare real-time two-dimensional ultrasound (RTUS) guidance technique with anatomical landmark technique for CVC to determine whether RTUS has any advantages. METHODS: Randomized studies comparing outcomes in patients undergoing CVC with either RTUS or landmark technique were retrieved from PubMed, ISI Web of Knowledge, EMBASE, and OVID EBM Reviews from their inception to March 2012. RESULTS: Twenty-six studies involving 4,185 CVC procedures met the inclusion criteria. Compared with landmark technique, patients with RTUS had a pooled relative risk (RR) of 0.18 (95% CI: 0.10-0.32) for cannulation failure, 0.25 (95% CI: 0.15-0.42) for arterial puncture, 0.30 (95% CI: 0.19-0.46) for hematoma, 0.21 (95% CI: 0.06-0.73) for pneumothorax, and 0.10 (95% CI: 0.02-0.54) for hemothorax from random-effects models. However, RTUS did not show a reduction in the risk of cannulation failure (RR = 0.26, 95% CI: 0.03-2.55), arterial puncture (RR = 0.34, 95% CI: 0.05-2.60), hematoma (RR = 0.13, 95% CI: 0.01-2.42), pneumothorax (RR = 0.40, 95% CI: 0.02-9.61), and hemothorax (RR = 0.40, 95% CI: 0.02-9.61) in children or infants when the limited data were analyzed. CONCLUSIONS: Among adults receiving CVC, RTUS was associated with decreased risks of cannulation failure, arterial puncture, hematoma, and hemothorax. Additional data of randomized studies are necessary to evaluate these outcomes in pediatric patients.
BACKGROUND: Use of ultrasound-guided techniques to facilitate central venous cannulation (CVC) may reduce the risk of misplacement and complications. A meta-analysis was conducted to compare real-time two-dimensional ultrasound (RTUS) guidance technique with anatomical landmark technique for CVC to determine whether RTUS has any advantages. METHODS: Randomized studies comparing outcomes in patients undergoing CVC with either RTUS or landmark technique were retrieved from PubMed, ISI Web of Knowledge, EMBASE, and OVID EBM Reviews from their inception to March 2012. RESULTS: Twenty-six studies involving 4,185 CVC procedures met the inclusion criteria. Compared with landmark technique, patients with RTUS had a pooled relative risk (RR) of 0.18 (95% CI: 0.10-0.32) for cannulation failure, 0.25 (95% CI: 0.15-0.42) for arterial puncture, 0.30 (95% CI: 0.19-0.46) for hematoma, 0.21 (95% CI: 0.06-0.73) for pneumothorax, and 0.10 (95% CI: 0.02-0.54) for hemothorax from random-effects models. However, RTUS did not show a reduction in the risk of cannulation failure (RR = 0.26, 95% CI: 0.03-2.55), arterial puncture (RR = 0.34, 95% CI: 0.05-2.60), hematoma (RR = 0.13, 95% CI: 0.01-2.42), pneumothorax (RR = 0.40, 95% CI: 0.02-9.61), and hemothorax (RR = 0.40, 95% CI: 0.02-9.61) in children or infants when the limited data were analyzed. CONCLUSIONS: Among adults receiving CVC, RTUS was associated with decreased risks of cannulation failure, arterial puncture, hematoma, and hemothorax. Additional data of randomized studies are necessary to evaluate these outcomes in pediatric patients.
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