Dr Sharon Chen1, Imelda De Guzman1, Dr Yassinn Haque1, Dr Jeffery Wong1, Prof Angela Makris1
1Liverpool Hospital, , Australia
Biography:
Bio to come
Background:
Arteriovenous fistulas (AVFs) are the preferred vascular access for hemodialysis due to superior patency and fewer complications. However, maturation failure and loss of patency remain common, especially in older, comorbid patients. As patient demographics and access practices evolve, an evaluation of AVF patency is warranted to provide important insights to assist clinical decision-making for this challenging population
Methods:
We conducted a single centre retrospective cohort study including all people with arteriovenous fistula (AVF) creation from 2018-2023. Patients whose AVFs had not yet been required for haemodialysis were excluded. Data were extracted from a database and the electronic medical record. The primary outcome was primary patency (dialysis after three consecutive successful cannulations without intervention); secondary outcomes included secondary patency (patency after intervention), primary and secondary failure. Analysis based on data normality was undertaken followed by regression to identify predictors of outcomes. SPSS was used and p set at <0.05.
Results:
A total of 208 AVFs were included. With 30.6% female, and a median age of 67(56.5-75.2)years. Primary patency was achieved 58.6%, secondary patency in 34.5%, primary failure occurred in 1.7% and secondary failure in 5.2% of cases. Predictors of primary patency included male sex (aOR 4.4 95%CI1.3-14.8) and left sided access creation (aOR5.5 95%CI1-33).
Conclusion:
The primary and secondary patency rates are comparable to published standards. Continued efforts to optimize preoperative assessment and early intervention strategies may further enhance AVF durability.