Role of access surveillance and preemptive intervention

Area of Science:

• Nephrology
• Vascular Surgery
• Interventional Radiology

Background:

• Vascular access dysfunction is a significant cause of morbidity and mortality in end-stage renal disease patients.
• Thrombosis, driven by neointimal hyperplasia and stenosis, is the main reason for prosthetic arteriovenous graft failure.
• Historically, surveillance and preemptive angioplasty were believed to reduce thrombosis and access loss.

Purpose of the Study:

• To review the efficacy of vascular access surveillance and preemptive angioplasty in preventing thrombosis and prolonging graft survival.
• To critically evaluate the evidence supporting these interventions in end-stage renal disease patients.

Main Methods:

• Review of observational studies and randomized controlled trials on vascular access surveillance and preemptive angioplasty.
• Analysis of data concerning graft outcomes, including thrombosis rates and graft survival.
• Examination of the methodologies and statistical analyses employed in previous studies.

Main Results:

• Observational studies suggested a benefit from surveillance and preemptive angioplasty.
• However, five randomized controlled trials failed to demonstrate a significant improvement in graft outcomes or survival.
• Discrepancies exist due to methodological limitations in earlier observational studies.

Conclusions:

• The role of routine vascular access surveillance and preemptive angioplasty in improving graft survival remains uncertain.
• Further high-quality research is needed to clarify the optimal management strategies for preventing vascular access thrombosis.
• Current evidence does not consistently support the widespread use of preemptive angioplasty to prolong graft survival.