Clinical outcomes of AngioJet pharmacomechanical thrombectomy versus catheter-directed thrombolysis for the treatment of filter-related caval thrombosis

Table 3 Therapeutic effect and complications of patients in the two groups, n (%)

	CDT group (n = 21)	AngioJet group (n = 44)	χ2/t	P values
Thrombus clearance grade
Grade I (< 50%)	2 (9.52)	4 (9.09)	0.281	0.922
Grade II (50%-99%)	11 (52.38)	26 (59.09)
Grade III (100%)	8 (38.10)	14 (31.82)
Complications
Haemoglobinuria	0	7 (15.91)	–	0.086
Any bleed	4 (19.05)	0	–	0.009
Bacteraemia	1 (4.76)	0	–	0.323
PE after treatment	2 (9.52)	4 (9.09)	–	1
Left lung	2 (9.52)	0	–	0.101
Embolism of segmental artery	2 (9.52)	4 (9.09)	–	1
Difference of circumference between affected and unaffected thigh (cm)
Before treatment	4.51 ± 0.65c	4.76 ± 0.77d	-1.267	0.21
After treatment	1.44 ± 0.36d	1.58 ± 0.51d	-1.089	0.28
Length of stay (d)	11.67 ± 5.34	10.64 ± 3.52	2.215	0.03
Filter removal
the first phase	10 (47.62)	15 (34.09)	1.099	0.294
the cumulative removal	17 (80.95)	42 (95.45)	–	0.08
IVCF retention time (d)	16 (13, 139)	59 (12, 231)	-0.991	0.322
D-dimer after 1 mo (mg/L)	0.24 (0.09, 2.15)	0.26 (0.09, 2.62)	-4.346	0

^cP < 0.01, before treatment vs after treatment in the catheter-directed thrombolysis group.

^dP < 0.01, before treatment vs after treatment in the AngioJet group.

CDT: Catheter-directed thrombolysis; IVCF: Inferior vena cava filter; PE: Pulmonary embolism.