Shunting branch of portal vein and stent position predict survival after transjugular intrahepatic portosystemic shunt

Table 1 Characteristics of patients before transjugular intrahepatic portosystemic shunt

Characteristic	Total	Shunting branch of the PV		Initial stent position
	(n = 307)	Left (n = 221)	Right (n = 86)	Optimal (n = 224)	Sub-optimal (n = 83)
Age (yr)	50.7 ± 12.8	50.0 ± 12.9	52.5 ± 12.3	50.8 ± 12.6	50.4 ± 13.3
Gender (male/female)	209/98	151/70	58/28	147/77	62/21
TIPS procedure (elective/emergency)	258/49	190/31	68/18	190/34	68/15
Etiology (viral/not viral1)	275/32	199/22	76/10	197/27	78/5
Ascites (no/yes)	94/213	74/147	20/66	69/155	25/58
Previous HE (no/yes)	298/9	214/7	84/2	218/6	80/3
Previous splenectomy (no/yes)	252/55	179/42	73/13	184/40	68/15
Platelet count (109/L)	82.3 ± 65.4	82.3 ± 68.9	82.6 ± 55.8	85.5 ± 68.4	73.9 ± 56.2
Albumin (g/L)	33.3 ± 5.2	33.4 ± 5.0	32.9 ± 5.9	33.1 ± 5.2	33.8 ± 5.2
Total bilirubin (μmol/L)	24.7 ± 19.2	24.3 ± 18.1	25.7 ± 21.7	24.0 ± 17.8	26.4 ± 22.4
INR	1.3 ± 0.3	1.3 ± 0.3	1.3 ± 0.3	1.3 ± 0.3	1.3 ± 0.3
Serum creatinine (μmol/L)	82.4 ± 21.8	82.3 ± 21.9	82.6 ± 21.6	81.0 ± 21.2	86.2 ± 22.9
Sodium (mmol/L)	138.9 ± 4.7	139.0 ± 4.3	138.4 ± 5.6	138.6 ± 5.0	139.6 ± 3.6
Child-Pugh score	7.1 ± 1.6	7.1 ± 1.6	7.3 ± 1.7	7.1 ± 1.7	7.1 ± 1.5
Child-Pugh classification (A/B/C)	126/157/24	94/110/17	32/47/7	93/111/20	33/46/4
MELD score	11.1 ± 3.3	11.1 ± 3.3	11.1 ± 3.5	11.2 ± 3.5	10.8 ± 2.7
Pre-TIPS PSG (mmHg)	22.3 ± 4.5	22.5 ± 4.3	21.7 ± 4.9	22.4 ± 4.6	22.0 ± 4.2
Reduction ratio of PSG (%)	45.8 ± 17.4	46.3 ± 17.4	44.5 ± 17.3	45.7 ± 17.4	45.9 ± 17.5
Stent diameter (8-/10-mm)	206/101	150/71	56/30	150/74	56/27
Shunting branch of the PV (right/left)	86/221	-	-	57/164	26/60
Initial stent position (optimal/suboptimal)	224/83	164/57	60/26	-	-
TIPS date2 (before 2006/after 2006)	118/189	75/146	43/433	83/141	35/48
Lost to follow-up	19	12	7	15	4

¹Cirrhosis caused by autoimmune diseases (n = 11), cirrhosis caused by medications (n = 4), schistosome (n = 1) or nonalcoholic steatohepatitis (n = 2);

²The date of TIPS procedure;

³The comparison between groups was significantly different. HE: Hepatic encephalopathy; PSG: Portosystemic pressure gradient; INR: International normalized ratio; MELD: Model for end-stage liver diseases; PV: Portal vein.