scholarly journals Mechanical Performance of PLLA Stent

2018 ◽  
Author(s):  
Longzhen Wang ◽  
Junfei Tong ◽  
Pengfei Dong ◽  
David L. Wilson ◽  
Hiram G. Bezerra ◽  
...  
Keyword(s):  
Mechanical Performance ◽  
Metal Alloys ◽  
Stent Fracture ◽  
Stent Restenosis ◽  
Biodegradable Stents ◽  
Plla Stent ◽  
One Year ◽  
In Stent Restenosis ◽  
Cobalt Chrome

Stent implantation is widely used to treat blocked lumen. Stents were meshed structure made of polymers and metal alloys, including stainless steel, cobalt chrome and nitinol [1]. Clinical studies had demonstrated that stents helped to scaffold the diseased lesion up to one year when tissue adapted to the stented environment [2]. However, the permanently implanted stents inside artery were associated with complications such as stent fracture, tissue inflammation, in-stent restenosis and thrombosis [3]. Currently, biodegradable stents are attracting more attention due to its potential long-term efficacy in treating blocked lumens. The detailed characterizations of biodegradable stents are essential for the desired clinical outcomes.

Long-Term Risk of In-Stent Restenosis and Stent Fracture for Extracranial Vertebral Artery Stenting

2018 ◽  
Vol 29 (4) ◽  
pp. 701-706 ◽  
Author(s):  
Man Kwun Andrew Li ◽  
Anderson Chun On Tsang ◽  
Frederick Chun Pong Tsang ◽  
Wai Shing Ho ◽  
Raymand Lee ◽  
...  
Keyword(s):  
Vertebral Artery ◽  
Stent Fracture ◽  
Stent Restenosis ◽  
Extracranial Vertebral Artery ◽  
Vertebral Artery Stenting ◽  
In Stent Restenosis

Stent fracture in the brachiocephalic trunk

Vascular ◽  
2013 ◽  
Vol 21 (4) ◽  
pp. 261-265 ◽  
Author(s):  
M Al-Natour ◽  
A Renno ◽  
M El-Fedaly ◽  
J Abbas ◽  
M Nazzal
Keyword(s):  
English Literature ◽  
The Body ◽  
Stent Fracture ◽  
Strongly Correlated ◽  
Stent Restenosis ◽  
Brachiocephalic Trunk ◽  
Long Term Follow Up ◽  
In Stent Restenosis

Stents are commonly used as a tool for revascularization of different vascular beds in the body. However, many pitfalls have been reported with their use, such as thrombosis, migration, restenosis or fractures. The latter have been strongly correlated to in-stent restenosis with long-term follow-up. We report a rare case of an early stent fracture in the brachiocephalic trunk with in-stent restenosis and recurrence of symptoms. To our knowledge there has been only one case report of a delayed brachiocephalic stent fracture in the English literature. We believe that our case is the first report of an early stent fracture in the brachiocephalic trunk.

Long‐term outcomes after deferral of revascularization of in‐stent restenosis using fractional flow reserve

2021 ◽  
Author(s):  
Angela McInerney ◽  
Alejandro Travieso Gonzalez ◽  
Alex Castro Mejía ◽  
Gabriela Tirado‐Conte ◽  
Hernán Mejía‐Rentería ◽  
...  
Keyword(s):  
Fractional Flow Reserve ◽  
Fractional Flow ◽  
Long Term Outcomes ◽  
Stent Restenosis ◽  
Flow Reserve ◽  
In Stent Restenosis

Long-term follow-up of brachytherapy for treatment of allograft in-stent restenosis

2004 ◽  
Vol 61 (2) ◽  
pp. 217-221 ◽  
Author(s):  
Gilbert J. Zoghbi ◽  
Vijay K. Misra ◽  
Gregory D. Chapman ◽  
William B. Hillegass ◽  
Brigitta C. Brott ◽  
...  
Keyword(s):  
Stent Restenosis ◽  
Long Term Follow Up ◽  
In Stent Restenosis

scholarly journals Short- Versus Long-Term Duration of Dual Antiplatelet Therapy in Patients Treated for In-Stent Restenosis

2014 ◽  
Vol 63 (6) ◽  
pp. 506-512 ◽  
Author(s):  
Gianluca Campo ◽  
Matteo Tebaldi ◽  
Pascal Vranckx ◽  
Simone Biscaglia ◽  
Carlo Tumscitz ◽  
...  
Keyword(s):  
Antiplatelet Therapy ◽  
Dual Antiplatelet Therapy ◽  
Stent Restenosis ◽  
In Stent Restenosis

scholarly journals Drug-eluting balloon treatment in femoropopliteal in-stent restenosis of different lengths

2020 ◽  
Vol 28 (3) ◽  
pp. 460-466
Author(s):  
Berkan Özpak
Keyword(s):  
Stent Restenosis ◽  
Significant Difference ◽  
Stent Length ◽  
Drug Eluting ◽  
Group 3 ◽  
Group 2 ◽  
Drug Eluting Balloon ◽  
One Year ◽  
In Stent Restenosis ◽  
Group 1

Background: In this study, we present one-year results of drug-eluting balloon treatment of femoropopliteal in-stent restenosis. Methods: A total of 62 patients (48 males, 14 females; mean age 64.2±9.1 years; range, 54 to 81 years) who underwent drug-eluting balloon stenting for femoropopliteal in-stent restenosis between August 2013 and October 2017 were included in the study. The patients were classified into three groups based on the narrowing length of stenosis in the stents. Group/Class 1 (n=17): narrowing <1/2 of the stent length; Group/Class 2 (n=22): narrowing >1/2 of the stent length, not totally occluded; and Group/Class 3 (n=23): totally occluded. In-stent restenosis was treated with drug-eluting balloon treatment. Results: There was a significant difference among all classes in terms of in-stent restenosis. The length of stenosis was a predictor for in-stent restenosis. The mean stent length was 107.7±24.6 mm in Group 1, 164.6±17.9 mm in Group 2, and 180±19.3 mm in Group 3. For non-occluded in-stent restenosis, restenosis rate at one year after balloon angioplasty was 47.1% in Group 1, 86.4% in Group 2, and 95.7% in Group 3. Femoropopliteal bypass was performed in five patients in whom treatment failed. None of the patients required amputation. Conclusion: The length of in-stent restenosis in the femoropopliteal arterial stents is an important predictor for recurrent stenosis, when re-flow is achieved with drug-eluting balloons.

Risk Forecast of In-Stent Restenosis by CFD Method

2014 ◽  
Vol 553 ◽  
pp. 235-239
Author(s):  
Chang Yan Lin ◽  
Xiu Jian Liu ◽  
Yu Yang Liu ◽  
Chuang Ye Xu ◽  
Guang Hui Wu
Keyword(s):  
Arterial Wall ◽  
Patient Specific ◽  
Stent Restenosis ◽  
Stent Treatment ◽  
Bifurcation Lesions ◽  
Risk Forecast ◽  
One Year ◽  
Cfd Method ◽  
In Stent Restenosis

The treatment of plaques near and involving coronary bifurcations (CB) is especially challenging, considering more plaques localized these regions and higher post-interventional in-stent restenosis (ISR) risk, mainly due to hemodynamic injury provoked on the arterial wall. Therefore optimization of stenting should begin with an understanding of how disease localized to these regions and why ISR formed associated with flow patterns. We chose four patients with bifurcation lesions, two patients with ISR and two without ISR according to the follow-up computed tomography angiography (CTA). Based on patient-specific pre-interventional and virtual stented geometries from CTA images, numerical simulation indicated that the wall shear stress (WSS) in stented segments, where the ISR occurred in one year, was lower than those without ISR, however. For bifurcation lesion, the stenting segments WSS is supposed a marker to forecast the ISR risk after stent treatment.

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