Comparison of short and long axis ultrasound-guided approaches to internal jugular vein puncture: a meta-analysis.

Objective To compare short-axis versus long-axis plane for ultrasound-guided internal jugular vein puncture. Methods PubMed, Embase, Cochrane Library and CNKI databases were searched for randomized controlled trials, published to 1 June 2019, that compared short- versus long-axis plane in ultrasound-guided internal jugular vein puncture. Statistical analyses were performed using RevMan software, version 5.3. Statistical results are presented as risk ratio (RR) (95% confidence interval [CI]) for dichotomous data and standard mean difference (SMD) (95% CI) for continuous data. Results Ten studies fulfilled the inclusion criteria. Analyses of pooled results showed no statistically significant differences in arterial puncture incidence between the two planes (RR 0.73 [95% CI 0.38, 1.39]). First-pass success rate (RR 1.08 [95% CI 0.95, 1.22]), total success rate (RR 1.00 [95% CI 0.99, 1.02]) and number of attempts required (SMD -0.09 [95% CI -0.37, 0.18]) were also similar between the two approaches. Trial sequential analysis indicated that the available evidence was insufficient to detect potential differences between the two techniques. Conclusions There is insufficient data for an evidence-based choice of either short- or long-axis plane in ultrasound-guided internal jugular vein puncture.