Resumen de Prevention of the endoleaks after evar with the induction of the trombosis of the aneurysn sac with radiofrequency

Carlos Vaquero Puerta, C. Grajal, A. Álvarez-Barcia, Enrique San Norberto García, R. Martínez Sanz, J. Pérez-Turiel, Juan Carlos Fraile Marinero, Antonio Lara Feria, J. Agudo

• This was an experimental study of endovascular aortic surgery for endovascular evaluation of the effect of thrombosis produced for coagulation of the blood of the aneurysm sac with radiofrequency method.

  PURPOSE. To determine the efficacy of the induction to thrombosis of the aneurysm sac as prevention of endoleaks after endovascular treatment.

  MATERIALS AND METHODS. Six dogs with induction for radiofrequency clotting blood sac of performed aneurysm and treated with stent-graft was used in the experiments in comparison with historical group of 4 dogs only with abdominal aneurysm treated with stent-graft. Radio frequency was applied to each nodule for 1 minutes at 127 mA ± 33 (mean ± SD) (tip temperature, 92°C ± 2). Color Dupplex ultrasonography and histology study are used for the evaluation of the method.

  RESULTS. The results show the efficacy of the radiofrequency system and it is possible the discussion of the standard clinical application DISCUSSION AND CONCLUSIONS. Endovascular repair of abdominal aortic aneurysms is dependent on the successful exclusion of the aneurysm from arterial circulation. Type II endoleaks originate from retrograde flow into the aneurysm sac. This study demonstrates the use of radiofrequency induce thrombosis in a canine model of a type II endoleak. A Ultrasound Dupplex enabled the immediate and a month detection of coagulation blood after radio-frequency treatment in dog aneurysm sac.

  This approach may be a strategy for future prevention of endoleaks.