Vascular access in hemodialysis: issues, management, and emerging concepts

Area of Science:

• Nephrology
• Vascular Surgery
• Biomedical Engineering

Background:

• Hemodialysis requires reliable vascular access, typically fistulae or grafts.
• Dysfunction, often due to venous stenosis, limits treatment efficacy.
• Neointimal hyperplasia is a key pathological process in stenosis.

Purpose of the Study:

• To review hemodialysis access types and current care standards.
• To describe the pathology and pathogenesis of venous stenosis.
• To evaluate existing and novel therapies for vascular access dysfunction.

Main Methods:

• Literature review of hemodialysis access, stenosis, and therapies.
• Analysis of pathological mechanisms, including neointimal hyperplasia.
• Discussion of therapeutic interventions and clinical trial models.

Main Results:

• Identification of various hemodialysis access types.
• Summary of clinical standards for access graft and fistula care.
• Description of venous stenosis pathology and pathogenesis.
• Tabulation of available therapies and reasons for limited efficacy.

Conclusions:

• Venous stenosis remains a significant challenge in hemodialysis vascular access.
• Current therapies have limitations in addressing neointimal hyperplasia effectively.
• Dialysis access may serve as a model for testing new local therapies.