Balloon catheter looping technique for entry site angioplasty during endovascular management of thrombosed arteriovenous grafts by single access

摘要

Purpose: This study was designed to evaluate the feasibility of balloon catheter looping technique for angioplasty of entry site lesions of stenosis or thrombi that could not be aspirated during endovascular treatment of thrombosed arteriovenous grafts by single access. Methods: Balloon catheter looping technique was used for angioplasty of entry site lesions in 13 sessions of treatment of thrombosed arteriovenous grafts by single access in 11 patients (M:F = 7:4, mean age: 70.7 years, 9 brachio-axillary straight and 2 brachio-antecubital loop grafts) and were retrospectively evaluated. Middle equator of the graft was punctured and a 7F Desilets-Hoffman introducer sheath was inserted for aspiration thrombectomy and angioplasty. For entry site angioplasty, the balloon catheter was positioned 4-5 cm beyond the tip of the sheath. The sheath was retrieved to the entry site and was redirected into the contralateral limb, so the balloon catheter would form a loop. The introducer sheath was advanced to pull the balloon back to cover the entry site for angioplasty. Radiological images and medical records were evaluated for feasibility, success rate, and complications. Results: Technical success of treatment of thrombosed graft and balloon catheter looping for entry site angioplasty could be achieved in all 13 cases (100 %), without requiring second access. Completion fistulography revealed no access complication. Patency rate at 3 and 6 months were 80 and 68.6 %, respectively. Conclusions: Balloon catheter looping technique for angioplasty of entry site lesions during endovascular treatment of thrombosed arteriovenous graft is a feasible alternative technique to obtaining a second access.