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Vascular stent

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https://www.readbyqxmd.com/read/28318137/plaque-erosion-delays-vascular-healing-after-drug-eluting-stent-implantation-in-patients-with-acute-coronary-syndrome-an-in-vivo-optical-coherence-tomography-study
#1
Sining Hu, Chao Wang, Chunyang Zhe, Yinchun Zhu, Taishi Yonetsu, Haibo Jia, Jingbo Hou, Shaosong Zhang, Ik-Kyung Jang, Bo Yu
OBJECTIVES: To compare vascular healing after drug-eluting stent (DES) implantation between plaque rupture (PR) and plaque erosion (PE). BACKGROUND: Vascular response after stent implantation in patients with PR has been extensively studied. Little is known about vascular healing after stent implantation in PE. METHODS: Sixty-five ACS patients who received optical coherence tomography (OCT) imaging of the culprit lesions both before and after stent implantation at baseline as well as at 6 months were included in this study...
March 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28317393/structural-analysis-of-two-different-stent-configurations
#2
M Simão, J M Ferreira, J Mora-Rodriguez, H M Ramos
Two different stent configurations (i.e. the well known Palmaz-Schatz (PS) and a new stent configuration) are mechanically investigated. A finite element model was used to study the two geometries under combining loads and a computational fluid dynamic model based on fluid structure interaction was developed investigating the plaque and the artery wall reactions in a stented arterial segment. These models determine the stress and displacement fields of the two stents under internal pressure conditions. Results suggested that stent designs cause alterations in vascular anatomy that adversely affect arterial stress distributions within the wall, which have impact in the vessel responses such as the restenosis...
March 20, 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28314675/a-hybrid-strategy-with-bioresorbable-vascular-scaffolds-and-drug-eluting-stents-for-treating-complex-coronary-lesions
#3
Richard J Jabbour, Alfonso Ielasi, Akihito Tanaka, Massimo Leoncini, Bernado Cortese, Giulietta Grigis, Satoru Mitomo, Damiano Regazzoli, Gaetano Di Palma, Claudio Rapetto, Maurizio Tespili, Antonio Colombo, Azeem Latib
BACKGROUND: Due to the inherent limitations of current generation BVSs, complex coronary artery disease often contains BVS unsuitable segments. Our aim was to assess the feasibility of a hybrid approach using bioresorbable vascular scaffolds (BVSs) and drug-eluting stents (DESs) for the treatment of complex coronary artery lesions not suitable for a scaffolding only approach. METHODS: A retrospective multicenter cohort analysis was performed on patients with complex de novo or in-stent restenosis lesions treated with a hybrid BVS (Absorb BVS, Abbott Vascular, Santa Clara, CA) and DES strategy...
March 8, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28306544/acute-ischemic-stroke-mimicking-subarachnoid-hemorrhage-after-coronary-angioplasty
#4
Ana Pršić, Tomislav Šipić, Krešimr Štambuk, Hrvoje Budinčević
Use of non-ionic contrast media (CM) in coronary arteriography has been reported to cause transient cortical blindness, confusion, amnesia and very rare focal deficits. We report a 69-year old patient with stabile angina pectoris who underwent coronary angioplasty with stent placement due to in-stent thrombosis of the right coronary artery who developed stroke symptoms with radiological suspicion of subarachnoid hemorrhage. No vascular malformations were detected on CT cerebral angiography. Dual antiplatelet treatment was continued...
March 16, 2017: Romanian Journal of Internal Medicine, Revue Roumaine de Médecine Interne
https://www.readbyqxmd.com/read/28303639/covered-stent-implantation-through-a-single-8-french-guide-catheter-for-the-management-of-a-distal-coronary-perforation
#5
Yader Sandoval, Angie S Lobo, Emmanouil S Brilakis
Distal coronary perforation can cause early or late tamponade and is usually treated with fat or coil embolization. An alternative treatment strategy is occlusion of the ostium of the perforated vessel via implantation of a covered stent in the main vessel, which is typically achieved using the ping-pong guide catheter technique. In this technique, a balloon is inflated over one guide catheter to stop pericardial bleeding and a covered stent is delivered through a second guide catheter due to inability to fit both a balloon and a covered stent through a single guide catheter...
March 17, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28300676/bare-metal-versus-paclitaxel-eluting-stents-for-long-femoropopliteal-lesions-prospective-cohorts-comparison-using-a-propensity-score-matched-analysis
#6
Pierre-Alexandre Vent, Adrien Kaladji, Jean-Michel Davaine, Béatrice Guyomarch, Philippe Chaillou, Alain Costargent, Thibaut Quillard, Yann Gouëffic
BACKGROUND: The study aims to compare outcomes of primary stenting of TASC C/D femoropopliteal (FP) lesions with bare metal stent (BMS) versus paclitaxel eluting stent (PES). METHODS: In a single centre study, we established 2 consecutive and prospective cohorts with TASC C/D FP de novo lesions. The inclusion and exclusion criteria were similar. Bare metal stent (LifeStent(®), Bard Peripheral) and PES (Zilver(®) PTX(®), Cook Peripheral Vascular) were implanted...
March 11, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28299676/bioresorbable-scaffolds-for-coronary-stenosis-when-and-how-based-upon-current-studies
#7
REVIEW
Alexandre Abizaid, J Ribamar Costa
PURPOSE OF REVIEW: First-generation bioresorbable scaffolds (BRS), largely represented by the poly-l-lactic acid (PLLA) ABSORB (Abbott Vascular, Temecula, Illinois, US), have demonstrated, in low to moderate lesion complexity, similar efficacy to current generation metallic drug-eluting stents. However, a trend toward more device thrombosis has been observed, especially when the scaffolds are used in off-label situations. In this review, we address the most relevant drawbacks of these devices and, based on the available scientific data, we visit the scenarios where there is more uncertainty about their indication, trying to identify the lesions/patients to whom this technology should be voided at its current stage of development...
March 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28297068/drug-eluting-balloons-for-resistant-arteriovenous-dialysis-access-stenosis
#8
Dimitrios Karnabatidis, Panagiotis Kitrou
Vascular access maintenance is vital for hemodialysis patients. Conventional balloon angioplasty is the gold standard of treatment in endovascular therapy according to published guidelines, accompanied by bare metal stents as a bail-out method. Several devices have been used so far with a view to improve patency outcomes, but only covered stents have been proposed as a valid alternative and only for venous juxta-anastomotic stenosis of arteriovenous grafts. Paclitaxel-coated balloons (PCBs) have been extensively investigated in the last few years in pilot studies with small numbers of patients in dialysis access...
March 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28297064/endovascular-treatment-of-swing-segment-stenosis-in-vascular-access-current-status-and-future-directions
#9
Rick de Graaf
Swing-segment lesions are a fairly common reason for access failure and predispose to repeated interventions. The pathophysiology, hemodynamic circumstances and the primary intervention might all play a role in early recurrence. Mainly, percutaneous transluminal angioplasty (PTA), bare metal stenting and stent graft implantation have been performed to prolong lesion patency and access circuit patency. The available data on endovascular treatment of swing-segment lesions are scarce, heterogeneous and of poor quality...
March 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28297062/description-and-early-outcomes-of-the-hybrid-graft-for-dialysis
#10
Luis F Gomez, Eric K Peden
INTRODUCTION: Long-term dialysis access has become more challenging as patient survival has improved in end-stage renal disease. The GORE® Hybrid Vascular Graft (GHVG) has been designed to improve dialysis access outcomes and provide additional access options for challenging patients. In this article, we will review the design of the graft, unique properties and reported outcomes. METHODS: We reviewed data available at our institution and performed a Pubmed search on GORE® Hybrid Vascular graft...
March 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28297058/stent-grafts-for-treatment-of-cannulation-zone-stenosis-and-arteriovenous-graft-venous-anastomosis
#11
David Shemesh, Ilya Goldin, Oded Olsha
Stent grafts (SGs) are widely used for treatment of failing vascular accesses, fistulas and grafts. The mechanical barrier of the covered stent prevents in-stent stenosis and can be used to effectively correct ruptured vein and aneurysms. Treatment of cannulation zone stenosis with SG can be justified when its use is obligatory, in order to prevent total access loss. Although there are worrying complications attendant on SG insertion and cannulation, including jeopardizing future access creation, most studies report no complications of SG in cannulation zone stenosis...
March 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28296239/stent-placement-in-the-superficial-femoral-and-proximal-popliteal-arteries-with-the-innova-self-expanding-bare-metal-stent-system
#12
Richard J Powell, Michael R Jaff, Herman Schroë, Andrew Benko, Juan Diaz-Cartelle, Stefan Müller-Hülsbeck
OBJECTIVES: The SuperNOVA trial was designed to evaluate performance of the Innova Vascular Self-Expanding Stent System (Boston Scientific, Marlborough, MA) for treating lesions in the femoropopliteal arteries. METHODS: Patients with chronic lower limb peripheral artery disease (Rutherford category 2, 3, or 4) and atherosclerotic lesions in the native superficial femoral and/or proximal popliteal artery (lengths 30-190 mm) were enrolled in this single-arm, multinational study...
March 15, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28295999/fracture-with-the-newer-bioresorbable-vascular-scaffolds
#13
Mostafa Elwany, Gaetano Di Palma, Bernardo Cortese
Bioresorbable vascular scaffolds (BVS) are being increasingly used in complex, real-world lesions. The possibility of strut fractures is a rare entity with the use of drug eluting stents (DES), but has not yet been adequately described for the BVS technology. In this report, we present a case of scaffold fracture of DEsolve BVS (Elixir Medical Corporation, USA) that was diagnosed both angiographically and by optical coherence tomography(OCT). Scaffold fracture with the newer BVS is a new Achilles' heel in the BVS technology...
March 15, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28295660/in-stent-neoatherosclerosis-and-tissue-characteristics-of-restenotic-lesions-following-implantation-of-second-generation-drug-eluting-stents-in-unrestricted-coronary-lesions-optical-frequency-domain-imaging-study
#14
Mahmoud Sabbah, Kazushige Kadota, Azza El-Eraky, Hanan M Kamal, Ahmed-Tageldien Abdellah, Ahmed El Hawary
BACKGROUND: Differences in stent platform, polymer coatings, and antirestenotic drugs among the current in use second-generation drug-eluting stents (G2-DESs) may induce significant variations in neointimal response and vascular healing, which may impact the prevalence of neoatherosclerosis (NA) and morphological appearance of the restenotic tissue. METHODS AND RESULTS: Utilizing Optical frequency domain imaging, two independent reviewers, retrospectively compared the prevalence of neoatherosclerosis (NA), and the morphological differences, and tissue characteristics of 50 G2-DESs in-stent restenosis (ISR) lesions (35 everolimus-eluting stent [22 cobalt-chromium (CoCr), 13 platinum-chromium (PtCr)], and 15 biolimus-eluting stent [BES]) implanted liberally in unrestricted coronary lesions...
March 10, 2017: Journal of Interventional Cardiology
https://www.readbyqxmd.com/read/28294661/-nellix-new-possibilities-in-the-treatment-of-the-aorto-iliac-aneurysm-our-initial-experiences
#15
László Hidi, Csaba Csobay-Novák, Attila Nemes, Balázs Nemes, Zoltán Oláh, Dániel Pál, Péter Sótonyi
INTRODUCTION: The Endologix developed an aortoiliac stent graft system that is different than the conventional implantation technique (Nellix, EVAS-endovascular aneurysm sealing system). The first implantation in Hungary has been performed in the beginning of 2016 at Heart and Vascular Center. METHODS: Nellix: two endobags surrounding ballon-expandable covered stent (10 mm) with optional length, biocompatible polymer which is able to be injected into the endobags and a procedure-coordinating console...
March 2017: Magyar Sebészet
https://www.readbyqxmd.com/read/28293976/evolution-of-hybrid-interventions-for-congenital-heart-disease
#16
Hitesh Agrawal, Wail Alkashkari, Damien Kenny
Surgical and transcatheter interventions have seen a tremendous evolution in last three decades. Hybrid technology combines the achievements of both disciplines to bring substantial hemodynamic benefit to patients with congenital heart disease (CHD) in a minimally invasive manner. This collaboration between surgeons and interventionalists will continue to grow as the technology evolves to meet the demands of CHD patients, potentially avoiding cardiopulmonary bypass and vascular access complications as well as optimizing immediate technical outcomes with exit angiography...
March 15, 2017: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/28291676/long-term-outcome-after-thrombolysis-for-acute-lower-limb-ischaemia
#17
O Grip, A Wanhainen, S Acosta, M Björck
OBJECTIVES: The purpose was to study long-term outcome after thrombolysis for acute arterial lower limb ischaemia, and to evaluate the results depending on the underlying aetiology of arterial occlusion. METHODS: This was a retrospective study of patients entered into a prospective database. Patients were identified in prospective databases from two vascular centres, including a large number of variables. Case records were analysed retrospectively. Through cross linkage with the Population Registry 100% accurate survival data were obtained...
March 10, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28291675/choices-of-stent-and-cerebral-protection-in-the-ongoing-acst-2-trial-a-descriptive-study
#18
D D de Waard, A Halliday, G J de Borst, R Bulbulia, A Huibers, R Casana, L H Bonati, V Tolva
OBJECTIVE/BACKGROUND: Several plaque and lesion characteristics have been associated with an increased risk for procedural stroke during or shortly after carotid artery stenting (CAS). While technical advancements in stent design and cerebral protection devices (CPD) may help reduce the procedural stroke risk, and anatomy remains important, tailoring stenting procedures according to plaque and lesion characteristics might be a useful strategy in reducing stroke associated with CAS. In this descriptive report of the ongoing Asymptomatic Carotid Surgery Trial-2 (ACST-2), it was assessed whether choice for stent and use or type of CPD was influenced by plaque and lesion characteristics...
March 11, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28290908/-coronary-angioplasty-and-stenting-in-patients-older-than-80-years-immediate-and-long-term-results
#19
A M Babunashvili, D P Dundua, D S Kartashov, A A Bazarnova, A Yu Korenevich, M E Vetluzhskikh
AIM: to assess immediate and long-term results of coronary angioplasty and stenting in patients older than 80 years - a high risk group in view of the severity of concomitant pathology and extent of coronary atherosclerosis. MATERIAL AND METHODS: We conducted retrospective analysis of data from 167 patients older than 80 years (mean age 81.43+/-2.14 years) subjected to percutaneous coronary intervention from 2006 to 2013 (3.2% from total number of patients). Multivessel involvement was present in 128 patients (76...
July 2016: Kardiologiia
https://www.readbyqxmd.com/read/28289241/symptomatic-patients-remain-at-substantial-risk-of-arterial-disease-complications-before-and-after-endarterectomy-or-stenting
#20
Cristina Hobeanu, Philippa C Lavallée, Peter M Rothwell, Leila Sissani, Gregory W Albers, Natan M Bornstein, Louis R Caplan, Geoffrey A Donnan, José M Ferro, Michael G Hennerici, Julien Labreuche, Carlos Molina, Philippe Gabriel Steg, Pierre-Jean Touboul, Shinichiro Uchiyama, Éric Vicaut, Lawrence K S Wong, Pierre Amarenco
BACKGROUND AND PURPOSE: After carotid endarterectomy (CEA) or carotid artery stenting (CAS) in patients with transient ischemic attack or minor ischemic stroke, recurrent stroke risk falls to a low rate on modern medical treatment. METHODS: We used data from 4583 patients with recent transient ischemic attack or minor stroke enrolled in the TIAregistry.org to perform a nested case-control analysis to evaluate pre- and post-CEA/CAS risk. Cases were defined as patients with a CEA/CAS during the 1-year follow-up period...
March 13, 2017: Stroke; a Journal of Cerebral Circulation
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