We report successful outcomes after endovascular placement of a stent graft in a 74- and a 77-year-old men, both of whom had malignant superior vena cava syndrome caused by squamous cell carcinoma. In each patient, successful palliation of the malignant superior vena cava syndrome was achieved by placement of a stent graft. No procedure-related complications were observed. The patients were asy...

The presented work details the computer simulation of the deployment of a stent graft in a patient-specific Abdominal Aortic Aneurysm (AAA) model, using the finite element method. The entire procedure is modeled, with the stent graft being crimped and bent according to the vessel geometry, and released in two steps. Deformations, external and internal forces during the procedure can be quantifi...

Background: To compare the outcomes of two Thoracic Endovascular Aortic Repair (TEVAR) techniques Left Subclavian Artery (LSA) reconstruction for Stanford Type B Dissection (TBAD) patients with undesirable proximal anchoring zone. Methods: We retrospectively reviewed 57 TBAD who underwent either three dimensional (3D)-printing-assisted extracorporeal fenestration (n = 32) or conventional 25) fr...

We report an autopsy case of aneurysm dissection that occurred 18 months after the implantation of a Zenith stent graft. A 94-year-old woman, who had undergone an endovascular repair with postoperative reintervention, died of shock due to retroperitoneal hematoma. An autopsy indicated that the stent graft remained firmly fixed to the native aorta, whereas the dissection occurred near the proxim...

PURPOSE To assess numerically the flexibility and mechanical stresses undergone by stents and fabric of currently manufactured stent-grafts. METHODS Eight marketed stent-graft limbs (Aorfix, Anaconda, Endurant, Excluder, Talent, Zenith Flex, Zenith LP, and Zenith Spiral-Z) were modeled using finite element analysis. A numerical benchmark combining bending up to 180° and pressurization at 150 ...

E mbolization of a venous stent is a rare but potentially catastrophic complication of peripheral vascular intervention. We report a case of a woman with chronic kidney disease who had recently received an endovascular stent to treat a compromised arteriovenous graft. While cases of stent embolization have been reported with other applications, this case represents the fi rst reported proximal ...

Background: The treatment of abdominal aortic aneurysm (AAA) is today commonly treated by inserting a stent-graft the endovascular route, without resorting to open surgery. However, some clinical cases do not allow this less invasive approach, meaning that cannot be inserted and surgery used. Methods: In study, we propose fluid–structure interaction (FSI) analysis an aneurysmatic aorta could wi...

In this paper a method is introduced, to visualize bifurcated stent grafts in CT-Data. The aim is to improve therapy planning for minimal invasive treatment of abdominal aortic aneurysms (AAA). Due to precise measurement of the abdominal aortic aneurysm and exact simulation of the bifurcated stent graft, physicians are supported in choosing a suitable stent prior to an intervention. The present...

A tailored therapy to patient requirements by combining endovascular and surgical steps can be necessary to prolong the life of a vascular access. Stent grafts play a growing role for the therapy of dialytic access complications. Randomized multi-center trials, however, support the on-label use of stent grafts in the treatment of graft venous outflow and in-stent restenosis. The main contraindi...

To determine the efficacy of using stents and stent grafts for treatment of hemodialysis graft-related stenoses which have failed angioplasty. This retrospective study was composed of 51 patients with polytetrafluoroethylene hemodialysis grafts who underwent angioplasty of a graft-related stenosis but subsequently required insertion of a stent or stent graft. The study group included 40 patient...