Comparison of Helical Interwoven Nitinol Stent Placement Versus Balloon Angioplasty for Arteriovenous Dialysis Graft Malfunction Caused by Stenosis of the Venous Anastomosis Site
- Author:
Jae Hwan HYUN
1
;
Doo Ri KIM
;
In Chul NAM
;
Jeong Sub LEE
;
Jeong Jae KIM
;
Hyunwoo KIM
;
Miyeon KIM
Author Information
- Publication Type:Original Article
- From: Journal of the Korean Society of Radiology 2025;86(2):249-258
- CountryRepublic of Korea
- Language:English
-
Abstract:
Purpose:The study aimed to compare the differences in patency between helical interwoven nitinol stents and balloon angioplasty in patients with arteriovenous graft (AVG) malfunction caused by venous anastomosis stenosis.
Materials and Methods:This retrospective study included patients who underwent helical interwoven nitinol stent placement (n = 15) or balloon angioplasty (n = 25) between January 2016 and September 2021. The primary and secondary patency rates were compared between the two groups.
Results:Dialysis was possible post-intervention in all patients who showed no specific complications, including stent fracture. The average primary patency of the stent placement group was longer than that of the balloon angioplasty group but did not differ significantly (8.5 vs. 6.3 months, p = 0.319). The mean secondary patency period was 17.6 months in the stent placement group, which was shorter than that in the balloon angioplasty group (18.8 months); however, this difference was also not statistically significant (p = 0.660).
Conclusion:Helical interwoven nitinol stents could maintain patency in patients with AVG malfunction caused by venous anastomosis stenosis, but they did not improve patency compared to balloon angioplasty.
