Percutaneous treatment of central venous stenosis in hemodialysis patients: long-term outcomes.
The purpose of this study was to evaluate the long-term outcomes of endovascular treatment of central venous stenosis in patients with arteriovenous fistulas (AVFs) for hemodialysis. Five hundred sixty-three patients with AVFs who were referred for a fistulogram were enrolled in this study. Among them, 44 patients showed stenosis (n = 35) or occlusions (n = 9) in the central vein. For the initial treatment, 26 patients underwent percutaneous transluminal angioplasty (PTA) and 15 patients underwent stent placements. Periods between AVF formation and first intervention ranged from 3 to 144 months. Each patient was followed for 14 to 60 months. Procedures were successful in 41 of 44 patients (93.2%). Primary patency rates for PTA at 12 and 36 months were 52.1% and 20.0%, and assisted primary patency rates were 77.8% and 33.3%, respectively. Primary patency rates for stent at 12 and 36 months were 46.7% and 6.7%, and assisted primary patency rates were 60.0% and 20.0%, respectively. Fifteen of 26 patients with PTAs underwent repeated interventions because of restenosis. Fourteen of 15 patients with a stent underwent repeated interventions because of restenosis and combined migration (n = 1) and shortening (n = 6) of the first stent. There was no significant difference in patency between PTAs and stent placement (p > 0.05). Average AVF patency duration was 61.8 months and average number of endovascular treatments was 2.12. In conclusion, endovascular treatments of central venous stenosis could lengthen the available period of AVFs. There was no significant difference in patency between PTAs and stent placement.
Kim
Young Chul
YC
Department of Radiology, Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, Korea.
Won
Jong Yun
JY
Choi
Sun Young
SY
Ko
Heung-kyu
HK
Lee
Kwang-Hun
KH
Lee
Do Yun
DY
Kang
Byung-Chul
BC
Kim
Seung-Jung
SJ
D001166:Arteriovenous Shunt, Surgical; D016121:Brachiocephalic Veins / Q000000981:diagnostic imaging; D002405:Catheterization, Central Venous / Q000009:adverse effects*; D005260:Female; D006083:Graft Occlusion, Vascular / Q000000981:diagnostic imaging / Q000209:etiology / Q000628:therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015641:Radiography, Interventional; D006435:Renal Dialysis; D015607:Stents; D013350:Subclavian Vein / Q000000981:diagnostic imaging; D015996:Survival Rate; D016896:Treatment Outcome; D014654:Vascular Patency