[Efficacy of percutaneous mechanical thrombectomy combined with percutaneous transluminal angioplasty in treatment of iliofemoral deep vein thrombosis].

Objective: To evaluate the clinical efficacy of percutaneous mechanical thrombectomy (PMT) combined with percutaneous transluminal angioplasty (PTA) in the treatment of iliofemoral deep vein thrombosis.

Methods: Ninety-four patients with iliofemoral deep vein thrombosis were identified in this retrospective study in our institution from November 2015 through December 2017. Patients were divided into two groups:PMT+PTA group (=50) and PMT only group (=44). Clot lysis rates, the retrieving and the embolism of the interior vena cava filter, as well as the incidence of complications were compared between two groups. The changes of serum creatinine, lactate dehydrogenase and hemoglobin were also measured perioperatively.

Results: All procedures were completed successfully. The average clot lysis rate was higher and the procedure time was shorter in PMT+PTA group than those in PMT group (both <0.01). No significant differences were found in the rates of venous stenosis, catheter-directed thrombolysis and stent placement between two groups (all >0.05). The interior vena cava filter was taken out in 82.0% (41/50) patients of PMT+PTA group and 81.8% (36/44) patients of PMT group (>0.05). There were no significant differences of the changes in serum creatinine, lactate dehydrogenase and hemoglobin (all >0.05). In PMT+PTA group, symptomatic pulmonary embolism and puncture bleeding occurred in 1(2.0%) and 2(4.0%) patients, while in PMT group, it was 0 and 2(4.5%), respectively (>0.05).

Conclusions: PMT combined with PTA is more effective than PMT alone for the treatment of iliofemoral deep vein thrombosis with less procedure time and without more incidence of pulmonary embolism.