Effect of initial stent position on patency of transjugular intrahepatic portosystemic shunt

Table 1 Demographic characteristics of the patients

Parameter	Group				P value
	A	B	C	D
n	57	136	83	149
Male/female	24/33	64/72	42/41	70/79	0.806
Age in yr	39.35 ± 19.56	36.97 ± 15.79	34.33 ± 12.35	37.69 ± 16.69	0.959
Etiology, viral/not viral	52/5	125/11	78/5	136/13	0.806
Child-Pugh class, A/B/C/D	6/44/7	18/99/19	8/62/13	16/109/24	0.968

Table 2 Mean pressure of the right atrium and portosystemic gradient value before and after transjugular intrahepatic portosystemic shunt placement

Group	Pressure of the right atrium in mmHg		P value	PSG in mmHg		P value
	Before TIPS	After TIPS		Before TIPS	After TIPS
A	2.81 ± 1.58	2.98 ± 1.11	0.335	31.08 ± 8.11	13.81 ± 4.50	0.014
B	2.87 ± 1.58	3.01 ± 1.11	0.235	33.73 ± 7.77	15.00 ± 4.32	0.009
C	2.79 ± 1.45	3.03 ± 1.03	0.149	32.69 ± 7.55	14.57 ± 4.12	0.015
D	2.80 ± 1.44	2.95 ± 1.04	0.101	32.65 ± 7.26	14.34 ± 3.84	0.012

TIPS: Transjugular intrahepatic portosystemic shunt; PSG: Portosystemic gradient.

Table 3 Clinical characteristics of the patients

Characteristic		Group A	Group B	P value	Group C	Group D	P value
Unassisted	3 mo	75.4%	92.6%	0.001	88.0%	73.8%	0.012
	6 mo	57.9%	89.2%	0.000	86.0%	66.4%	0.000
Patency rate	12 mo	54.4%	75.0%	0.005	74.7%	60.4%	0.028
Median primary patency in mo		5.2	9.1	0.013	8.3	6.9	0.025
Mean primary patency		4.98	15.01	0.006	13.28	8.20	0.009
Recurrence	3 mo	15.8%	5.1%	0.014	6.0%	15.4	0.035
of bleeding in mo	6 mo	28.1%	13.2%	0.014	9.6%	20.1%	0.038
	12 mo	33.3%	18.4%	0.024	13.3%	26.8%	0.017
Median recurrent bleeding in mo		5.2	7.4	0.016	13.61	7.47	0.011
Mean recurrent bleeding in mo		4.21	6.93	0.023	8.7	6.3	0.018
Recurrence	3 mo	17.5%	6.6%	0.020	5.9%	16.4%	0.035
of ascites in mo	6 mo	22.8%	10.3%	0.019	10.5%	25.5%	0.022
	12 mo	35.1%	20.6%	0.034	19.3%	35.6%	0.009
Mean recurrent ascites in mo		6.11	11.45	0.011	14.26	7.19	0.005
Median recurrent ascites in mo		5.9	10.4	0.007	9.1	6.8	0.009
Stent dysfunction times		74	53	0.037	50	117	0.021
Hepatic encephalopathy cases		9	22		13	22	0.965