An Ultrasound Study of Cerebral Venous Drainage after Internal Jugular Vein Catheterization

Table 2

Analysis of IJV cross-sectional diameters for each landmark point, with head in supine and head elevation at 30° (mean ± SD).

		Top			Bottom
		IJV diameter before cannulation	IJV diameter after cannulation	𝑃-value	IJV diameter before cannulation	IJV diameter after cannulation	𝑃-value
Head 0°	R	1.29±0,38	1.23±0.34	0.36	1.50±0.57	1.55±0.50	0.41
	L	1.03±0.33	1.13±0.43	0.09	1.21±0.44	1.26±0.46	0.29
Head 30°	R	0,95±0,41	0,99±0,30	0.47	1,14±0,49	1,22±0,48	0.14
	L	0,80±0,27	0,85±0,29	0.18	0,96±0,40	0,97±0,42	0.72