Compression of the Inferior Vena Cava in Bowel Obstruction

Table 2

Anteroposterior (APD) and lateral (LAD) IVC diameters. (1) 1 cm after the confluence of the iliac veins, (2) 1 cm before the confluence of the renal veins, (3) just before the confluence of the renal veins, (4) just after the confluence of the renal veins, (5) 1 cm after the confluence of the renal veins, (6) just before the confluence of the supra-hepatic veins, and (7) just after the confluence of the supra-hepatic veins. Data are reported as means (standard deviations). In group O, significant differences against the correspondent value in group C at Tukey’s test are distinguished by the use of bold characters.

	1	2	3	4	5	6	7
Group O (obstruction)
APD; mm	12.2; (4.1)	12.0; (4.3)	12.0; (4.6)	13.1; (5.2)	15.5; (5.2)	13.3; (4.4)	18.0; (4.4)
LAD; mm	22.6; (3.6)	23.9; (3.8)	26.5; (4.1)	28.4; (5.2)	27.7; (4.2)	22.3; (4.7)	29.0; (6.0)
APD/LAD	.55; (.18)	.51; (.19)	.46; (.19)	.46; (.17)	.56; (.17)	.60; (.16)	.63; (.13)
AREA; cm^2/m^2	1.30; (.54)	1.33; (.55)	1.48; (.63)	1.79; (.92)	2.06; (.86)	1.45; (.75)	2.52; (1.02)
Group C (control)
APD; mm	18.4; (2.9)	18.7; (3.0)	18.9; (3.1)	20.7; (4.3)	22.6; (3.8)	19.3; (3.9)	21.8; (3.0)
LAD; mm	22.6; (2.8)	23.6; (2.4)	26.4; (3.3)	30.1; (3.2)	29.0; (3.4)	24.9; (5.2)	32.2; (4.6)
APD/LAD	.82; (.11)	.80; (.13)	.73; (.14)	.69; (.14)	.78; (.13)	.80; (.21)	.68; (.09)
AREA; cm^2/m^2	1.88; (.51)	1.98; (.47)	2.25; (.58)	2.83; (.86)	2.96; (.77)	2.19; (.72)	3.15; (.72)