Abstract: TH-PO266
Long Term Outcomes of Stenting in Treating Thigh Arteriovenous Grafts
Session Information
- Vascular Access: From Biology to Managing Complications
November 03, 2022 | Location: Exhibit Hall, Orange County Convention Center‚ West Building
Abstract Time: 10:00 AM - 12:00 PM
Category: Dialysis
- 703 Dialysis: Vascular Access
Authors
- Almehmi, Ammar, The University of Alabama at Birmingham, Birmingham, Alabama, United States
- Abaza, Masa, University of Alaska Anchorage, Anchorage, Alaska, United States
- Almehmi, Sloan, The University of Alabama at Birmingham, Birmingham, Alabama, United States
- Narasimha Krishna, Vinay, The University of Alabama at Birmingham, Birmingham, Alabama, United States
- Albalas, Alian, The University of Alabama at Birmingham, Birmingham, Alabama, United States
Background
Stents are used to manage the outflow stenotic lesions that complicate upper extremity arteriovenous grafts (AVGs) to improve the survival. In this study, we sought to investigate the effect of stents on the overall survival of "thigh" AVGs.
Methods
This was a retrospective review of patients who received dialysis via thigh AVGs. Data on demographics, comorbidities, AVG intervention history was collected. Both primary and secondary AVG survival rates were calculated using Kaplan-Meier analysis. Multivariate analysis was performed to determine the predictors of the graft survival.
Results
This study included 407 thigh AVGs; 53.2% females; 92.4% African Americans; and 92% hypertensive. Graft thrombosis (67.1%) and elastic recurrent stenotic lesions (32.9%) were the main indications for stent deployment. During follow up, the median secondary graft survival in the stent versus no-stent groups was 86.1 (±15.5) vs 34.1(±5.3) months (p=0.001), respectively.
Multi-variables Cox-regression analysis revealed that AVG thrombosis, stenting and hypertension were the main predictors of the AVG survival (Table 1 and Figure 1).
Conclusion
The use of stents to manage the outflow lesions appears to improve the overall thigh AVG survival specially in thrombosed grafts.