Failure of peripheral arterial reconstruction

Area of Science:

• Vascular Surgery
• Surgical Outcomes
• Arterial Reconstruction

Background:

• Infrainguinal arterial reconstruction using autogenous vein grafts is a common procedure.
• Graft failure occurs in 15-25% of cases within 5 years, with some early failures lacking a clear cause.
• Secondary reconstruction can be successful, but may require multiple interventions.

Purpose of the Study:

• To analyze the outcomes of infrainguinal arterial reconstruction with autogenous vein grafts.
• To identify factors contributing to early graft failure.
• To explore strategies for improving secondary reconstruction success.

Main Methods:

• Review of infrainguinal arterial reconstruction cases utilizing autogenous vein grafts.
• Analysis of graft patency rates and failure modes.
• Evaluation of secondary reconstruction outcomes.
• Investigation of potential causes for early graft failure (within 30 days).

Main Results:

• Autogenous vein grafts provide acceptable results but have a 15-25% failure rate within 5 years.
• Secondary reconstruction can restore significant graft patency, particularly when identified before complete thrombosis.
• A notable percentage of early graft failures occur within 30 days without identifiable causes.
• The in situ technique and completion angiography have reduced early failure rates.

Conclusions:

• While autogenous vein grafts are effective, strategies to minimize early failure are crucial.
• Addressing vasospasm, hypercoagulopathy, embolization, and systemic hypotension is essential for further reducing early graft failures.
• Secondary reconstruction offers a viable option for managing vein graft failure, though it may necessitate repeated procedures.