Table 4.

Comparison of portal vein data (mean ± 1 SD) obtained before (baseline) and after PH

	PH model	Difference (95% confidence interval)	P
Pressure (mm Hg)	Low-flow	16.5 ± 7.6 (11.5 to 21.6)	<0.001
	High-flow	7.8 ± 7.6 (0.9 to 16.6)	0.067
	High-flowa	12.8 ± 2.2 (7.4 to 18.3)	0.010
Pulsatility index	Low-flow	−0.3 ± 0.4 (−0.6 to −0.1)	0.012
	High-flow	0.4 ± 0.3 (0.1 to 0.7)	0.031
	High-flowa	0.3 ± 0.2 (−0.2 to 0.8)	0.109
Diameter (mm)	Low-flow	−0.1 ± 1.6 (−1.8 to 1.6)	0.886
	High-flow	−0.4 ± 1.7 (−2.5 to 1.7)	0.638
	High-flowa	−1.1 ± 1.7 (−5.4 to 3.1)	0.368

^aSubgroup of dogs that received flow from femoral artery and saline infusion