Effects of ipsilateral tilt position on the cross-sectional area of the subclavian vein and the clinical performance of subclavian vein catheterization: a prospective randomized trial

Table 3 Procedure-related complications in patients undergoing subclavian vein catheterization in the supine and ipsilateral tilt positions

	Group S (n = 107)	Group I (n = 109)	Mean (95% CI) difference	P value
Total mechanical complications	10 (9.3)	7 (6.4)	2.9% (−4.6 to 10.6)	.586
Arterial puncture	1 (0.9)	0 (0.0)	0.9% (−2.6 to 5.0)	.495
Subcutaneous hematoma formation	2 (1.9)	4 (3.7)	1.8% (−3.4 to 7.4)	.683
Inadvertent pneumothorax	0 (0.0)	0 (0.0)	NA	NA
Misplacement of the catheter tip	9 (8.4)	3 (2.8)	5.6% (−0.8 to 12.6)	.081
Ipsilateral internal jugular vein	7 (6.5)	2 (1.8)	4.7% (−1.0 to 11.2)	.100
Contralateral innominate vein	2 (1.9)	1 (0.9)	1.0% (−3.3 to 5.8)	.620

Data are presented as number of patients (%)
CI confidence interval, NA not applicable
In the group S, landmark-based subclavian vein catheterization was performed in the supine position. In the group I, landmark-based subclavian vein catheterization was performed in the ipsilateral tilt position with a 20° angle

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