. 2020 Mar 20;40(3):308–315. doi: 10.12122/j.issn.1673-4254.2020.03.02

4.

Summary of the outcomes of central venous cannulation through the SAX and LAX approaches in the subclavian vein and axillary vein

Study or subgroup	No of patients	MD(95%CI)	Heterogeneity	Effects Model
Study or subgroup	SAX/LAX	MD(95%CI)	I²(P-value)	Effects Model
LAX: Long-axis; SAX: Short-axis; SCV: Subclavian vein; AV: Axillary vein; RR: Relative risk; MD: Mean different; b: Favors long-axis; c:Significant difference; R-E: Random effects model.
First-attempt success rate in SCV and AV^{[6, 9]}	138/138	1.41(1.08-1.85)^b	I²=53%(P=0.01^c)	R-E
Overall puncture success rate in SCV and AV^{[6, 9]}	138/138	1.15(1.00-1.32)	I²=69%(P=0.05)	R-E
Incidence of accidental arterial puncture in SCV and AV^{[6, 9]}	138/138	0.15(0.03-0.86)^b	I²=0%(P=0.03^c)	R-E
Incidence of hematoma in SCV and AV^{[6, 9]}	138/138	0.43(0.06-2.89)	I²=0%(P=0.39)	R-E