[Thrombectomy in secondary and/or late thrombosis of branches of the aortic bifurcation prosthesis]

Area of Science:

• Vascular Surgery
• Biomaterials Science
• Clinical Outcomes Research

Background:

• Atherosclerotic lesions commonly affect the aortic bifurcation, necessitating reconstructive surgery.
• Prosthetic grafts are frequently used for aorto-bi-femoral or aorto-bi-iliac reconstruction, excluding aneurysms.

Purpose of the Study:

• To analyze the incidence and causes of thrombosis in aortic bifurcation prostheses.
• To compare the efficacy of thrombectomy versus alternative reconstructive procedures for thrombosed grafts.

Main Methods:

• Retrospective analysis of 1,100 aortic bifurcation prostheses (aorto-bi-femoral/iliac) implanted between 1974-1984.
• Evaluation of thrombosis development, prosthesis material (primarily double velvet Dacron), operative techniques, distal arterial bed status, and anticoagulant therapy.
• Comparison of thrombectomy outcomes with other bypass surgeries for similar indications.

Main Results:

• Global thrombosis development rate was 5.5% across all prostheses.
• Potential contributing factors to thrombosis included surgical techniques, distal arterial conditions, and anticoagulation status.
• Outcomes of thrombectomy were evaluated against alternative reconstructive methods.

Conclusions:

• Thrombosis remains a significant complication following aortic bifurcation prostheses implantation.
• Surgical technique, patient-specific arterial factors, and anticoagulation management are critical considerations.
• Thrombectomy presents a viable option, with outcomes comparable to other reconstructive approaches in specific scenarios.