Venous CTO Recanalization: Inflow Drives Success Or Failure
Inflow, Not Just Disease Type, Predicts Outcomes
Recanalizing chronically occluded iliac and femoral veins has matured over two decades, but success varies: published series report technical success near 83 percent and secondary patency near 66 percent at four years. A classification system in over a thousand patients found femoral or profunda involvement, not post-thrombotic status, best predicts outcomes, with patency falling to 60 and 39 percent at one year in severe cases.
Technique And Follow-Up Protocol
The speaker plans each case with detailed imaging, fluoroscopic angles, crossing catheters, and balloon dilation confirmed with intravascular ultrasound before large stents. Patients then take low molecular weight heparin for three to four weeks before transitioning to warfarin, avoiding direct oral anticoagulants for three months, with close follow-up since reocclusion often occurs soon after.
When Open Surgery Is Still Needed
Stents and open reconstruction fail for the same reason, poor inflow, so open surgery is rarely needed, reserved for a persistent ulcer with a usable conduit and no other option. The speaker stressed patient selection, including willingness to follow up and anticoagulate, matters as much as skill, pointing to inflow-focused catheters as next steps.
