Stent fracture after transjugular intrahepatic portosystemic shunt placement using the bare metal stent/stent-graft combination technique

Table 1 Patient characteristics (%)

Characteristics	All		Integrity group		Fracture group		P valuea
	No. patient		No. patient		No. patient
Total	68	100.0	61	89.7	7	10.3
Sex
Male	38	55.9	34	89.5	4	10.5	0.633
Female	30	44.1	27	90.0	3	10.0
Age (yr)
≤ 60	32	47.1	29	90.6	3	9.4	0.567
> 60	36	52.9	32	88.9	4	11.1
Child-Pugh classification
A	22	32.4	18	32.4	4	20.0	0.444
B	34	50.0	32	50.0	2	5.9
C	12	17.6	11	17.6	1	8.3
Stent number
2	55	80.9	51	92.7	4	7.3	0.095
3	11	16.2	9	81.8	2	18.2
4	2	2.9	1	50.0	1	50.0
Reoperation
No	59	86.8	54	91.5	5	8.5	0.230
Yes	9	13.2	7	77.8	2	22.2
Gradient
Portosystemic gradient (median, IQR)			15.0 mmH2O (12.0-16.0)		14.0 mmH2O (13.5-15.0)		0.745
Stent angle
Angle 1 (median, IQR)			1.0 (0-22.0)		20.0 (3.5-35.0)		0.151
Angle 2 (median, IQR)			15.5 (0-33.8)		39.5 (30.5-60.5)		0.009

^aDifferences between the stent integrity group and the stent fracture group were analyzed using the Fisher’s exact test for categorical variables and the Mann-Whitney U test for continuous variables.

IQR: Interquartile range.