Sequential changes of Wallstent shape without post-stenting angioplasty

Abstract

Objective: We prospectively followed the sequential changes in Carotid Wallstent (Wallstent) shape after carotid artery stenting (CAS) without post-stenting angioplasty.
Methods: The case series was composed of 10 out of 11 consecutive patients who received CAS at our institution during a 9-month period. In all cases, we used distal protection throughout the procedure. Wallstents were deployed in all cases after predilatation. None of the cases received post-dilatation. The ratio of the stent diameter in the stenotic part (SW) to that in the proximal end (PE) estimated from the neck radiograph (SW/PE ratio) was calculated in follow up.
Results: Gradual self-expansion was confirmed in every case. The SW/PE ratios were increased an average of 44% to 57%.
Conclusion: In each case the Wallstent without post-dilatation expanded gradually after deployment and improved apposition of the stent to the vessel wall.