Table 2.

Patients treated with the revised protocol (n=19)

Factors	value
Filters in total	22
No. of filters initially inserted	19
No. of filters secondly inserted	3
Duration of tPA-based CDT	3.08 ± 0.45 days
The total dose of tPA used	59.71 ± 15.02 mg
No. of patients with assisted techniques (% total)	19
Guiding catheter aspiration	7 (36.8%)
AnjioJet rheolytic thrombectomy	6 (31.6%)
None	6 (31.6%)
No. of lysis grade (% total) achieved in caval thrombosis*	19
Grade I	0
Grade II	6 (31.6%)
Grade III	13 (68.4%)
No. of complications (% total)**	19
Major	0
Minor	4 (21.1%)

tPA, tissue plasminogen activator; CDT, catheter-directed thrombolysis.

^*Lysis grade: grade III, complete resolution of thrombus on visual assessment of venograms; Grade II, 50-99% resolution; grade I, <50%.

^**Major complications including massive bleeding, severe allergy, renal dysfunction and the like, usually requiring prompt treatments.