title: Midterm Results Following Percutaneous Rotational Thrombectomy for Acute Thrombotic Occlusions of Prosthetic Arteriovenous Access Grafts.
abstract: Patent vascular access is critical for patients on regular hemodialysis. Prosthetic grafts are good alternatives when the superficial venous system is of poor quality. However, thrombosis is one of the main drawbacks of synthetic grafts, with reports of 59% to 90% patency rates for 1 year. In cases of thrombotic occlusion of prosthetic arteriovenous fistula grafts, percutaneous mechanical thrombectomy has recently gained clinical popularity as a potential alternative to surgical thrombectomy or pharmacologic thrombolysis. We reviewed our preliminary results from 30 percutaneous rotational thrombectomies performed in a total of 22 patients in the setting of acute dialysis-access prosthetic graft occlusion of the upper extremity. Among the 30 cases of acute occlusion of the arteriovenous graft, immediate success with angiographic flow restoration was observed in all patients except for 2 patients (both females; 6%), with de novo occlusion where reocclusion occurred within 12 hours despite apparent immediate angiographic patency. The mean duration between the initial presentation with acute arteriovenous graft occlusion and the thrombectomy procedure was 27.4 ± 12.4 hours. The mean duration of graft patency was 10.45 ± 0.6 months. A total of 75% of the arteriovenous grafts were patent at the end of 12 months of follow-up. Female gender, diabetes mellitus, and diagnosis to intervention interval were reviewed for midterm graft failure, and the presence of diabetes mellitus yielded significance (P < 0.05). Percutaneous techniques play important roles in the treatment of failed or failing arteriovenous fistulae and grafts. Ongoing analysis of outcomes of both percutaneous and surgical intervention is necessary to continue to identify optimum treatment algorithms.
authors.affiliation: 1 Medical Faculty, Cardiovascular Surgery Department, Mustafa Kemal University, Antakya, Turkey.
authors.forename: Celalettin
authors.initials: C
authors.lastname: Karatepe
authors.affiliation: 2 Medical Faculty, Cardiovascular Surgery Department, Kocatepe University, Afyon, Turkey.
authors.forename: Mustafa
authors.initials: M
authors.lastname: Aldemir
authors.affiliation: 3 Cardiovascular Surgery Department, Medical Park Hospital, Istanbul, Turkey.
authors.forename: Bayer
authors.initials: B
authors.lastname: Çınar
authors.affiliation: 4 Istanbul Medical Faculty, Cardiovascular Surgery Department, Istanbul University, Istanbul, Turkey.
authors.forename: Akif
authors.initials: A
authors.lastname: Önalan
authors.affiliation: 5 Istanbul Medical Faculty, Public Health and Biostatistics Department, Istanbul University, Istanbul, Turkey.
authors.forename: Halim
authors.initials: H
authors.lastname: Işsever
authors.affiliation: 4 Istanbul Medical Faculty, Cardiovascular Surgery Department, Istanbul University, Istanbul, Turkey.
authors.forename: Onur S
authors.initials: OS
authors.lastname: Goksel
mesh_terms: D000328:Adult; D000368:Aged; D001166:Arteriovenous Shunt, Surgical; D005260:Female; D006083:Graft Occlusion, Vascular / Q000601:surgery*; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D006435:Renal Dialysis; D017131:Thrombectomy / Q000295:instrumentation / Q000379:methods*; D013927:Thrombosis / Q000601:surgery*; D014654:Vascular Patency
keywords: Arteriovenous access; Dialysis; Rotational thrombectomy