Johnathan Ngo1, Imelda De Guzman1, Bryan Barry1, Jules Catt1, Jeffrey Wong1
1Liverpool Hospital, , Australia
Biography:
Dr Johnathan Ngo is a recently fellowed Nephrologist and the current Transplant Fellow at Liverpool hospital. His special interests include general nephrology, renal transplantation, health informatics and data analytics. He is actively involved in the provision of medical education.
Aim:
To evaluate the need for and efficacy of adjunct interventions following endovascular arteriovenous fistula (Endo-AVF) creation.
Background:
Adjunct interventions may be necessary to promote maturation and improve functionality of Endo-AVFs.
Method:
We analysed data from 13 patients who underwent Endo-AVF creation at our centre between Dec 2024 and March 2025, focusing on the need for additional interventions, types of procedures performed, and subsequent cannulation success.
Results:
Of 13 patients with successful endo AVF creation, 6 (46%) required at least one adjunct intervention to assist with maturation. One patient (8%) required a second intervention. The most common procedure was fistuloplasty (6 cases), followed by combined thrombolysis with fistuloplasty (1 case). Radial-radial (R/R) configurations required fewer intervention than ulnar-ulnar (U/U) configurations (44% vs. 50%). Median procedure to intervention interval was 27 days (IQR 17 48). Intervention-free survival at 90 days was 54%. Age, weight and diabetes did not predict intervention need. Seven Endo-AVFs (54%) did not require additional intervention, of which 3 (23%) matured to first cannulation uneventfully.
Conclusion:
Around one quarter of Endo AVFs were able to be cannulated without additional procedures. Just under half of Endo AVFs to date required intervention to augment maturation, which mostly occurred within four weeks.