Retrievable Inferior Vena Cava Filters in Patients with Cancer: Complications and Retrieval Success Rate

Table 4

Clinical characteristics in patients with active cancer () with and without filter retrieval.

	Filter retrieved; ()	Filter in place; ()	value
Age years, mean (SD)	61 ()	62 ()	0.63
Male gender	7 ()	21 ()	0.086
BMI mean (median, IQR)	30 (25–35)	30 (26–34)	0.89
VTE event
DVT	27 ()	47 ()	0.51
Bilateral	8 (30)	16 ()	0.67
IVC	0	3 ()	1
Proximal	21 ()	39 ()	0.38
PE	20 ()	30 ()	0.64
Filter indication
Surgery	18 ()	16 ()	0.021
Bleeding	12 ()	22 ()	0.68
Bleeding risk	4 ()	13 ()	0.27
Failed anticoagulation	1 ()	1 ()	1
Other	0	2 ()	0.52
Medications
Antiplatelet	3 ()	9 ()	0.36
Statins	6 ()	10 ()	0.93
Laboratory
WBC mean (median, IQR)	7.8 (5.6–10.4)	9.1 (5.7–13.2)	0.17
Hemoglobin mean (median, SD)	10.0 (2.2)	10.1 (1.6)	0.91
Platelets (median, IQR)	271 (188–418)	198 (129–279)	0.011
Creatinine (median, IQR)	0.76 (0.61–1.0)	0.9 (0.7–1.2)	0.024
Bilirubin (median, IQR)	0.4 (0.3–0.7)	0.7 (0.5–1.1)	<0.01
Chemotherapy	7 ()	21 ()	0.087
Metastatic	12 ()	32 ()	0.038
Khorana score, intermediate and high	29 ()	48 ()	0.72
Ottawa score ≥1	16 ()	34 ()	0.18
Follow-up time (median, IQR)	363 (203–537)	62 (24–305)	<0.01
Anticoagulation within 1 month	30 ()	31 ()	<0.01
Outcomes
Death	11 ()	37 ()	<0.01
Time to death (median, IQR)	274 (88–412)	34 (24–243)	0.14
Complications
Incident VTE	3 ()	11 ()	0.23
DVT	3 ()	8 ()	0.52
PE	0	4 ()	0.29
patients with filter complications	7 ()	8 ()	0.44
Filter complications
Migration	1 ()	0	0.40
Embolization	1 ()	0	0.40
Fracture	0	0
Thrombosis	1 ()	7 ()	0.31
Tilting	1 ()	0	0.15
Penetration	3 ()	1 ()	0.30
Other	1 ()	0	0.40
Major filter complications	3 ()	7 ()	0.73
patients with complications or incident VTE	8 ()	11 ()	0.67

Note: values are (%) unless otherwise specified. IQR: interquartile range; : Fisher’s exact test.