Table 5.

Comparison of preoperative and postoperative doppler portal ultrasound according to portal vein thrombosis, ligation of spontaneous portosystemic shunts and primary graft dysfunction

Doppler ultrasound parameter	Variable	Preoperative	Postoperative	Delta (post-preoperative)
Portal vein velocity (cm/s)	Overall	14.00 [11.7-19.0; 10.45]	71.00 [58.4-102.8; 68]	52.70 [41.24-89.23; 73.50]
	No PVT	17.00 [13.25-25.98; 12.5]	88.00 [60.68-116.50; 45]	36.80 [13.89-80.699; 79.10]
	PVT	11.80 [8.58-17.50; 8.48]	48.00 [43.09-109.25; 55.91]	60.35 [41.21-109.44; 81.40]
	P value1	0.037	0.169	0.276
	No SPSS	14.00 [7.31-23.40; 12.8]	84.50 [61.62-121.41; 78.4]	75.20 [46.13-109.15; 77.00]
	SPSS	13.50 [11.02-19.82; 9.95]	67.00 [37.51-106.15; 19.16]	25.50 [5.32-87.93; 64.60]
	P value1	0.338	0.115	0.080
	No PGD	11.80 [8.52-18.63; 8.98]	85.82 [64.73-127.48; 80.55]	73.42 [48.78-115.95; 86.00]
	PGD	15.00 [12.53-24.20; 8.6]	46.00 [31.05-75.25; 49.25]	25.00 [9.78-59.78; 65.50]
	P value1	0.890	0.570	0.037
Portal vein flow (L/min)	Overall	0.59 [0.47-0.73; 0.56]	3.6 [2.69-4.99; 4.55]	3.21 [2.09-4.40; 4.24]
	No PVT	0.87 [0.41-1.02; 0.82]	2.68 [3.29-6.04; 3.05]	1.52 [0.65-4.17; 3.22]
	PVT	0.55 [0.40-0.67; 0.47]	2.05 [1.68-5.07; 4.4]	3.35 [2.10-5.31; 4.76]
	P value1	0.187	0.065	0.419
	No SPSS	0.9 [0.73-1.34; 0.32]	2.68 [2.41-5.40; 4.17]	1.77 [1.64-4.63; 3.88]
	SPSS	0.51 [0.38-0.66; 0.5]	3.97 [1.58-5.30; 8.65]	3.26 [1.19-5.59; 5.50]
	P value1	0.002	0.723	0.849
	No PGD	0.75 [0.50-0.82; 0.36]	3.95 [2.96-6.07; 4.73]	3.34 [2.29-5.42; 4.54]
	PGD	0.30 [0.24-0.74; 0.51]	2.20 [0.93-4.33; 3.1]	1.31 [0.41-3.88; 3.09]
	P value1	0.677	0.169	0.136

¹ P value corresponds to the significance level of the comparison of either subgroups whether preoperatively, postoperatively or their difference. These variables do not have a normal distribution [median (p5-95; IQR)]. They were compared using Mann-Whitney’s U test. PVT: Portal vein thrombosis; SPSS: Spontaneous portosystemic shunt; PGD: Primary graft dysfunction.