The Outcome of Anticoagulation on Endovenous Laser Therapy for Superficial Venous Incompetence

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The purpose of this study was to evaluate whether anticoagulation (warfarin or direct oral inhibitors) affected the success of endovenous treatment.


Patients taking anticoagulation (warfarin or direct oral inhibitors) undergoing endovenous treatment in the form of endovenous laser ablation (EVLA) were matched against controls for sex, age, leg, and vein. Data were collected prospectively between January 2012 and March 2017. The primary endpoint was failure of treatment at 6-week postoperative duplex scan. The rates of major bleeding, hematoma, endothermal heat-induced thrombosis, venous thromboembolism, or pulmonary embolism were also compared between groups.


Two hundred eighty-four limbs underwent EVLA during the study period. Of this, 23/284 (8.1%) procedures were done in patients on anticoagulation. 21/23 (91.3%) limbs had venous occlusion at follow-up compared with 23/23 (100%) of controls (P = .49). The patient who failed treatment in the anticoagulation group had undergone small saphenous vein (SSV) ablation. There was no difference in the complication rates between groups.


This study demonstrates that anticoagulation does not affect success rates of EVLA though there was higher recanalization rate in patients undergoing SSV ablation. Anticoagulation can be continued safely in patients undergoing this procedure.

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