Lower Extremity Venous Stent Morphology and Luminal Changes

Venous stents are a common treatment modality for obstructive venous diseases. differentiate themselves by woven or braided structure, open closed cell arrangement based on material composition (elgiloy vs nitinol). Changes in the morphology of over time may contribute to restenosis thrombosis. Woven elgiloy prone proximal and distal edge deformation compared with dedicated which offer increased radial force at stent edges. The objective this study is describe luminal morphological changes within between nonwoven configuration, time. A retrospective review single institution January 2014 June 2021 identified patients stents. Patients iliac and/or femoral intraoperative intravascular ultrasound postoperative computed tomography scan were included study. Cross-sectional diameters measurements taken proximal, middle, portions each from initial stenting cross-sectional diameter imaging follow-up. paired t test was used compare change D’Agostino-Pearson normality. Fifty-nine distributed among 42 identified. Mean follow-up 17.5 months. Stents placed vein (n = 41, 69.5%), external 15, 25.4%), 3, 5.1%). Implanted Boston Scientific Wallstent 23, 39.0%), Bard Venovo 4, 6.8%), Vici 27, 45.8%), Medtronic Abre 5, 8.5%). mean loss measured 2.17 mm proximally (95% confidence interval [CI], 1.73-2.60; P < .001), 1.35 mid-stent CI, 0.93-1.77; 1.50 distally 0.98-2.02; .001). There no significant difference (P .344), middle .155), .802) measurements. This reports Our findings demonstrate that edge-stent reduction traditionally attributed configurations also occurs newer Additional factors such as anatomical location, pelvic curvature other forces be accountable rather than geometrical configuration stent.