Alternative graft materials for hemodialysis access.

Area of Science:

• Nephrology
• Vascular Surgery
• Biomaterials Science

Background:

• Autogenous arteriovenous fistulas are the preferred hemodialysis access method according to recent guidelines.
• A significant portion of the dialysis population lacks suitable veins for primary arteriovenous fistulas.
• Advances in autogenous access techniques have increased procedure performance, but prosthetic grafts remain necessary for many.

Purpose of the Study:

• To review current and emerging graft materials for hemodialysis access.
• To discuss strategies for improving the patency and outcomes of prosthetic arteriovenous grafts.
• To highlight recent developments in both prosthetic and biologic hemodialysis access conduits.

Main Methods:

• Review of existing literature on hemodialysis access materials.
• Analysis of surgical outcomes with expanded polytetrafluoroethylene grafts.
• Evaluation of early results from alternative and modified graft materials.

Main Results:

• Surgical results with early expanded polytetrafluoroethylene grafts were suboptimal.
• Modifications to existing grafts and new materials show promising early results for improved patency.
• Ongoing research aims to enhance the efficacy of prosthetic and biologic hemodialysis access.

Conclusions:

• While autogenous arteriovenous fistulas are ideal, advancements in prosthetic graft technology are crucial for patients requiring hemodialysis access.
• Continued development of novel graft materials is essential to improve long-term patency and patient outcomes.
• The review focuses on improving results with both prosthetic and biologic hemodialysis access conduits.