Complications from permanent hemodialysis vascular access

Area of Science:

• Vascular Surgery
• Nephrology
• Biomaterials Science

Background:

• Permanent hemodialysis vascular access is crucial for patients with end-stage renal disease.
• Autogenous fistulas and expanded polytetrafluoroethylene (PTFE) grafts are common surgical options.
• Complication rates and patency durations vary significantly between access types.

Purpose of the Study:

• To compare the outcomes of autogenous fistulas versus PTFE grafts for permanent hemodialysis vascular access.
• To evaluate complication rates including thrombosis, infection, pseudoaneurysm, and limb loss.
• To assess the mean length of patency for different types of vascular access.

Main Methods:

• Retrospective analysis of 499 operations for permanent hemodialysis vascular access in 230 patients from 1981 to 1986.
• Categorization of procedures into primary (autogenous fistulas, PTFE fistulas) and secondary (thrombectomies, repairs, ligations, excisions).
• Follow-up of at least 1 year for all cases, with detailed recording of complications and patency.

Main Results:

• PTFE grafts showed significantly higher rates of thrombosis, infection, pseudoaneurysm, and limb loss (p < 0.01) compared to autogenous fistulas.
• Mean patency was significantly lower for PTFE grafts (1.4–2.1 years) than for autogenous fistulas (2.6–3.1 years) (p < 0.0001).
• Infectious complications occurred in 6% of all accesses; vascular steal syndrome was more frequent in autogenous elbow fistulas.

Conclusions:

• Autogenous fistulas are associated with significantly better outcomes, including higher patency and lower complication rates, than PTFE grafts for hemodialysis access.
• PTFE grafts present a higher risk of complications such as thrombosis, infection, and pseudoaneurysm formation.
• Surgical choice between autogenous fistulas and PTFE grafts should consider these comparative outcomes for optimal patient management.