PURPOSE: Improving @entity2548 ( @entity2548 ) patency is an integral part of the care of hemodialysis @entity1 , often requiring procedures such as percutaneous transluminal angioplasty (PTA). However, these interventions may fail to reduce @entity2548 and failure. The purpose of this study was to determine predictive factors for subsequent @entity2548 failure post-PTA. METHODS: Data from 155 consecutive AVFs in 155 @entity1 at a single institution who had undergone a first PTA and had at least 1 year of follow-up data were analyzed. Using survival analysis, we assessed primary and secondary patency, and identified predictive factors taking into account competing risks. RESULTS: Of the 155 @entity1 , 52% required multiple subsequent PTAs; 32% of the AVFs were not in use prior to the first PTA. At first PTA, 83% had @entity850 ( @entity850 ), 26% had multiple stenoses and 43% of stenoses were longer than 2 cm. During follow-up, 1-, 2-, 3-year postintervention primary patency was 41%, 32%, 32% and secondary patency was 80%, 71% and 68%. AVFs with stenoses greater than 2 cm or @entity850 were at higher risk of requiring multiple PTAs (p = 0.04, 0.006). Factors associated with requiring a second PTA included @entity850 greater than 2 cm ( @entity15012 , 95% confidence interval (CI) = 1.2-2.9), @entity850 (HR = 2.5, 95% CI = 1.1-5.4) and primary @entity8 (HR = 1.8, 95% CI = 1.1-2.9); after adjustments for competing risks, @entity850 and @entity850 length remained associated with requiring subsequent PTAs. CONCLUSIONS: The location and size of the @entity2548 at first PTA appear to be consistent factors associated with worse postintervention primary patency.

Risk factors associated with XXXX failure after first radiologic intervention.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity8 :: ('MESH:D007674', 'Disease') :: ['renal diagnosis of diabetes or renal vascular diseases'] @entity850 :: ('MESH:D003251', 'Disease') :: ['outflow vein stenosis', 'OVS', 'stenosis'] @entity15012 :: ('56852', 'Gene') :: ['hazard ratio (HR) = 1.8'] @entity2548 :: ('MESH:D001164', 'Disease') :: ['AVF dysfunction', 'AVF stenosis', 'AVF', 'arteriovenous fistula']
@entity2548 :: (MESH:D001164,Disease) :: ['arteriovenous fistula']
