Postprocedure management and follow-up

All 14 patients received intravenous heparin after the procedure and were observed overnight. For all but one patient, who continued with intravenous heparin because of known renal failure requiring dialysis, the patients were transitioned on postprocedure day 1 from intravenous heparin to 1 mg/kg enoxaparin twice daily to be continued for 6 to 12 months. The patients who had undergone thrombectomy and venous reconstruction with stenting started enoxaparin 1 mg/kg twice daily with the addition of 81 mg of aspirin daily, to be continued indefinitely. Alterations to the anticoagulation regimen were dictated on a case-by-case basis.

Technical success was defined as the placement and use of the ClotTriever system with extraction of thrombotic materials on visual inspection and a reduction of the thrombus burden found on repeat venography. Clinical success was defined as patient-reported improvement of the presenting symptoms on postprocedure follow-up. Clinical follow-up was obtained by in-person or telephone visits, and all 14 patients had undergone bilateral upper extremity venous duplex ultrasound with or without CTV.