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Bioresorbable stent

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https://www.readbyqxmd.com/read/28612280/mid-term-and-long-term-safety-and-efficacy-of-bioresorbable-vascular-scaffolds-versus-metallic-everolimus-eluting-stents-in-coronary-artery-disease-a%C3%A2-weighted-meta-analysis-of-seven-randomised-controlled-trials-including-5577-patients
#1
J Elias, I M van Dongen, R P Kraak, R Y G Tijssen, B E P M Claessen, J G P Tijssen, R J de Winter, J J Piek, J J Wykrzykowska, J P S Henriques
AIMS: Mid- and long-term safety and efficacy of the Absorb bioresorbable vascular scaffold (BVS) have been studied in randomised trials; however, most were not individually powered for clinical endpoints. We performed a weighted meta-analysis comparing mid- and long-term outcomes in patients treated with the BVS compared with the Xience metallic stent. METHODS AND RESULTS: Randomised trials comparing the BVS and Xience were identified by searching MEDLINE, EMBASE and conference abstracts...
June 13, 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/28600401/comparison-of-a-drug-free-early-programmed-dismantling-pdlla-bioresorbable-scaffold-and-a-metallic-stent-in-a-porcine-coronary-artery-model-at-3-year-follow-up
#2
Kazuyuki Yahagi, Yi Yang, Sho Torii, Johanne Mensah, Roseann M White, Marion Mathieu, Erica Pacheco, Masataka Nakano, Abdul Barakat, Tahmer Sharkawi, Michel Vert, Michael Joner, Aloke V Finn, Renu Virmani, Antoine Lafont
BACKGROUND: Arterial Remodeling Technologies bioresorbable scaffold (ART-BRS), composed of l- and d-lactyl units without drug, has shown its safety in a porcine coronary model at 6 months. However, long-term performance remains unknown. The aim of this study was to evaluate the ART-BRS compared to a bare metal stent (BMS) in a healthy porcine coronary model for up to 3 years. METHODS AND RESULTS: Eighty-two ART-BRS and 66 BMS were implanted in 64 Yucatan swine, and animals were euthanatized at intervals of 1, 3, 6, 9, 12, 18, 24, and 36 months to determine the vascular response using quantitative coronary angiography, optical coherence tomography, light and scanning electron microscopy, and molecular weight analysis...
June 9, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28592227/long-term-outcome-of-bioresorbable-vascular-scaffolds-for-the-treatment-of-coronary-artery-disease-a-meta-analysis-of-rcts
#3
Alberto Polimeni, Remzi Anadol, Thomas Münzel, Ciro Indolfi, Salvatore De Rosa, Tommaso Gori
BACKGROUND: Coronary bioresorbable scaffolds (BRS) were developed to overcome the limitations of standard metallic stents, especially to address late events after percutaneous coronary interventions. The aim of this meta-analysis was to evaluate the efficacy and safety of BRS, compared with Everolimus-eluting stents (EES), using the data available from randomized trials, with a focus on long-term outcomes. METHODS: Published randomized trials comparing BRS to EES for the treatment of coronary artery disease were searched for within PubMed, Cochrane Library and Scopus electronic databases up to April 4th 2017...
June 7, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28590249/difference-in-hemodynamic-microenvironment-in-vessels-scaffolded-with-absorb-bvs-and-mirage-brms-insights-from-a-pre-clinical-endothelial-shear-stress-study
#4
Erhan Tenekecioglu, Ryo Torii, Christos Bourantas, Yohei Sotomi, Rafael Cavalcante, Yaping Zeng, Carlos Collet, Tom Crake, Pannipa Suwannasom, Yoshinobu Onuma, Patrick W Serruys
AIMS: In silico studies have provided robust evidence that stent design affects local hemodynamic forces, which appear as a major determinant of clinical outcomes following stent implantation. However, implications of different stent/scaffold configurations on local hemodynamic forces have not yet been investigated in vivo in a comparative fashion. METHOD AND RESULTS: Eight healthy mini pigs were implanted with six Absorb everolimus-eluting Bioresorbable Vascular Scaffolds (Absorb BVS) and five Mirage sirolimus-eluting Bioresorbable Microfiber Scaffolds (Mirage BRMS)...
June 6, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28582036/pathology-of-endovascular-stents
#5
REVIEW
Kenta Nakamura, John H Keating, Elazer Reuven Edelman
Contemporary endovascular stents are the product of an iterative design and development process that leverages evolving concepts in vascular biology and engineering. This article reviews how insights into vascular pathophysiology, materials science, and design mechanics drive stent design and explain modes of stent failure. Current knowledge of pathologic processes is providing a more complete picture of the factors mediating stent failure. Further evolution of endovascular stents includes bioresorbable platforms tailored to treat plaques acutely and to then disappear after lesion pacification...
July 2016: Interventional cardiology clinics
https://www.readbyqxmd.com/read/28582033/bioresorbable-scaffolds-clinical-outcomes-and-considerations
#6
REVIEW
Davide Capodanno
Bioresorbable scaffolds (BRS) have been engineered to eliminate the theoretic stimulus to late coronary events, a caveat of conventional metallic drug-eluting stents (DESs). Outcome benefits of BRSs over current-generation DESs are expected to accrue after complete bioresorption. Before this timeframe, BRSs need to prove at least similarly safe and effective compared with DESs. Several randomized studies of the Absorb BRS have been made available. Several manufacturers are at the beginning of their line of clinical development of competing BRSs...
July 2016: Interventional cardiology clinics
https://www.readbyqxmd.com/read/28582032/design-principles-of-bioresorbable-polymeric-scaffolds
#7
REVIEW
Mary Beth Kossuth, Laura E L Perkins, Richard J Rapoza
The concept for a bioresorbable vascular scaffold combines the best features of the first 3 generations of percutaneous coronary intervention (namely), balloon angioplasty, bare metallic stents, and drug-eluting stents, into a single device. The principles of operation of a BRS follow 3 phases of functionality that reflect the different physiologic requirements over time; revascularization, restoration, and resorption. Most BRS designs make use of the continuum of hydrolytic degradation in aliphatic polyesters, such as poly(l-lactide), in which molecular weight, strength, and mass decrease progressively in 3 distinct stages, consistent with the in vivo requirements of each performance phase...
July 2016: Interventional cardiology clinics
https://www.readbyqxmd.com/read/28579164/impact-of-strut-thickness-on-acute-mechanical-performance-a-comparison-study-using-optical-coherence-tomography-between-desolve-150-and-desolve-100
#8
Niklas F Boeder, Oliver Dörr, Timm Bauer, Alessio Mattesini, Albrecht Elsässer, Christoph Liebetrau, Stephan Achenbach, Christian W Hamm, Holger M Nef
OBJECTIVE: To evaluate the acute performance of a novolimus-eluting bioresorbable scaffold (BRS) with different strut thickness (DESolve system 150 and 100) using optical coherence tomography (OCT) in terms of appropriate scaffold deployment. BACKGROUND: Outcome after BRS implantation seen in registries and meta-analyses continue to show a higher rate of scaffold thrombosis than those reported with DES. Thus, second scaffold generations with lower strut thickness might have potential advantages in terms of flow disturbance...
May 24, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28579092/coronary-artery-aneurysm-formation-following-implantation-of-a-bioresorbable-vascular-scaffold-for-in-stent-restenosis
#9
Marcos García-Guimaraes, Javier Cuesta, Teresa Alvarado, Fernando Rivero, Teresa Bastante, Amparo Benedicto, Fernando Alfonso
Coronary artery aneurysm (CAA) formation is a rare complication of coronary intervention that may develop after implantation of bare-metal or drug-eluting stents. The etiology of this entity appears to be multifactorial and its prognosis is poorly understood, but it has been associated with an increased risk of stent thrombosis. To date few cases of CAAs related to bioresorbable vascular scaffold (BVS) implantation have been reported, and the development of CAA after BVS implantation for the treatment of in-stent restenosis (ISR) has not been previously described...
May 31, 2017: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/28576627/comparison-of-everolimus-and-biolimus-eluting-coronary-stents-with-everolimus-eluting-bioresorbable-vascular-scaffolds-two-year-clinical-outcomes-of-the-everbio-ii-trial
#10
Diego Arroyo, Gregoire Gendre, Sara Schukraft, Zacharenia Kallinikou, Olivier Müller, Gérard Baeriswyl, Jean-Christophe Stauffer, Jean-Jacques Goy, Mario Togni, Stéphane Cook, Serban Puricel
BACKGROUND: Data from randomized controlled trials have shown that the ABSORB BVS is non-inferior to Cobalt Chromium everolimus-eluting stents at 2years. METHODS & RESULTS: The EVERBIO II trial (Comparison of Everolimus- and Biolimus-Eluting Coronary Stents with Everolimus-Eluting Bioresorbable Vascular Scaffold) is a single-center, assessor-blind, randomized controlled trial enrolling 240 patients with an allocation ration of 1:1:1 conducted at University and Hospital Fribourg, Switzerland...
May 12, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28574901/first-in-man-demonstration-of-complete-bioresorbable-vascular-scaffold-resorption-after-treatment-of-in-stent-restenosis
#11
Elisabetta Moscarella, Alfonso Ielasi, Bernardo Cortese, Maria C De Angelis, Attilio Varricchio
No abstract text is available yet for this article.
June 1, 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/28559655/everolimus-eluting-bioresorbable-vascular-scaffold-in-real-world-practice-a-single-center-experience
#12
Huai-Wen Liang, Hsien-Li Kao, Yen-Hung Lin, Juey-Jen Hwang, Mao-Shin Lin, Fu-Tien Chiang, Chii-Ming Lee, Chih-Fan Yeh, Tzung-Dau Wang, Cho-Kai Wu, Lian-Yu Lin, Chia-Ti Tsai, Ying-Hsien Chen
BACKGROUND: Drug-eluting stents are widely used in coronary artery intervention. However, vessel caging and very late thrombotic events are of persistent and substantial concern. Bioresorbable vascular scaffolds (BVS) were developed to deliver vascular reparative therapy, by eliminating permanent mechanical restraint. However, data regarding its clinical performance is lacking. METHODS: After the BVS implantation procedure received national approval in May 2014, patients receiving BVS implantation until November 2014 in National Taiwan University Hospital (NTUH) were enrolled...
May 2017: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/28559495/temporal-trends-in-adverse-events-after-everolimus-eluting-bioresorbable-vascular-scaffold-versus-everolimus-eluting-metallic-stent-implantation-a-meta-analysis-of-randomized-controlled-trials
#13
Rocco A Montone, Giampaolo Niccoli, Federico De Marco, Silvia Minelli, Fabrizio D'Ascenzo, Luca Testa, Francesco Bedogni, Filippo Crea
BACKGROUND: Bioresorbable coronary stents have been introduced into clinical practice to improve the outcomes of patients treated with percutaneous coronary intervention. The everolimus-eluting bioresorbable vascular scaffold (BVS) is the most studied of these stent platforms; however, recent trials comparing BVS with everolimus-eluting metallic stents (EES) raised concerns about BVS safety. We aimed to assess the efficacy and safety of BVS versus EES in patients undergoing percutaneous coronary intervention...
May 30, 2017: Circulation
https://www.readbyqxmd.com/read/28532901/long-term-surveillance-of-zinc-implant-in-murine-artery-surprisingly-steady-biocorrosion-rate
#14
Adam J Drelich, Shan Zhao, Roger J Guillory, Jaroslaw W Drelich, Jeremy Goldman
Metallic zinc implanted into the abdominal aorta of rats out to 6months has been demonstrated to degrade while avoiding responses commonly associated with the restenosis of vascular implants. However, major questions remain regarding whether a zinc implant would ultimately passivate through the production of stable corrosion products or via a cell mediated fibrous encapsulation process that prevents the diffusion of critical reactants and products at the metal surface. Here, we have conducted clinically relevant long term in vivo studies in order to characterize late stage zinc implant biocorrosion behavior and products to address these critical questions...
May 19, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28523173/thrombotic-responses-to-coronary-stents-bioresorbable-scaffolds-and-the-kounis-hypersensitivity-associated-acute-thrombotic-syndrome
#15
REVIEW
Nicholas G Kounis, Ioanna Koniari, Anastasios Roumeliotis, Grigorios Tsigas, George Soufras, Nicholas Grapsas, Periklis Davlouros, George Hahalis
Percutaneous transluminal coronary angioplasty with coronary stent implantation is a life-saving medical procedure that has become, nowadays, the most frequent performed therapeutic procedure in medicine. Plain balloon angioplasty, bare metal stents, first and second generation drug-eluting stents, bioresorbable and bioabsorbable scaffolds have offered diachronically a great advance against coronary artery disease and have enriched our medical armamentarium. Stented areas constitute vulnerable sites for endothelial damage, endothelial dysfunction, flow turbulence, hemorheologic changes, platelet dysfunction, coagulation changes and fibrinolytic disturbances...
April 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28516211/early-endothelialization-associated-with-a-biolimus-a9-bioresorbable-polymer-stent-in-a-porcine-coronary-model
#16
Masayuki Mori, Kenji Sakata, Chiaki Nakanishi, Takuya Nakahashi, Masa-Aki Kawashiri, Kazuaki Yoshioka, Yoh Takuwa, Hirofumi Okada, Jun-Ichiro Yokawa, Masaya Shimojima, Tsuyoshi Yoshimuta, Shohei Yoshida, Masakazu Yamagishi, Kenshi Hayashi
Although Nobori(®), with a bioresorbable polymer and biolimus A9 abluminal coating, has unique characteristics, few data exist regarding endothelialization early after implantation. Fifteen Nobori(®) and 14 control bare-metal stents (S-stent™) were implanted in 12 pigs. Histopathology of stented segments, inflammation, and intimal fibrin content was evaluated on the 2nd and 14th day after implantation. On the 2nd day, endothelial cells were morphologically and immunohistologically confirmed on the surface of both stents, although some inflammatory cells might be involved...
May 17, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28512285/coronary-aneurysm-formation-after-bioresorbable-vascular-scaffold-implantation-resulting-in-acute-myocardial-infarction
#17
Ching-Chang Fang, Yeun Tarl Fresner Ng Jao
BACKGROUND Development of a true coronary aneurysm after percutaneous coronary intervention is a rare event, and a coronary aneurysm resulting in acute myocardial infarction is even rarer. Coronary aneurysm formation after bioresorbable vascular scaffold (BVS) implantation, eventually leading to thrombosis, embolization, and myocardial infarction, has never been reported before in the literature. CASE REPORT A 62-year-old man received an elective BVS for a proximal left anterior descending lesion. Two months later, he suffered from a non-ST-segment myocardial infarction...
May 17, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28512069/optical-coherence-tomography-findings-insights-from-the-randomised-multicentre-trial-investigating-angiographic-outcomes-of-hybrid-sirolimus-eluting-stents-with-biodegradable-polymer-compared-with-everolimus-eluting-stents-with-durable-polymer-in-chronic-total
#18
Koen Teeuwen, Eva M Spoormans, Johan Bennett, Christophe Dubois, Walter Desmet, Giovanni J Ughi, Ann Belmans, Johannes C Kelder, Jan G P Tijssen, Pierfrancesco Agostoni, Maarten J Suttorp, Tom Adriaenssens
AIMS: The PRISON IV trial investigated the next-generation sirolimus-eluting stent (SES) with ultra-thin struts and biodegradable polymer against the second-generation everolimus-eluting stent (EES) with thin struts and durable polymer in patients with successfully recanalised chronic total occlusions (CTO). In this study, we examined the secondary optical coherence tomography endpoints. METHODS AND RESULTS: The main PRISON IV trial randomised 330 patients to either SES or EES...
May 18, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28504231/poland-coronary-and-structural-heart-interventions-from-2010-to-2015
#19
Jacek Legutko, Zbigniew Siudak, Radosław Parma, Andrzej Ochała, Dariusz Dudek
For the last five years, invasive cardiology in Poland has developed extensively. Currently, 98% of the 161 Polish cathlabs operate in 24/7 mode, 37 of them supported by cardiac surgery departments on-site. A certification curriculum for interventional cardiology operators is supported by dedicated workshops and scientific meetings during national conferences. The rise in the number of coronary angiographies and PCIs was paralleled by an increased use of drug-eluting stents, bioresorbable vascular scaffolds and physiologic assessment of coronary arteries...
May 15, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28500737/clinical-outcomes-of-overlapping-versus-non-overlapping-everolimus-eluting-absorb-bioresorbable-vascular-scaffolds-an-analysis-from-the-multicentre-prospective-rai-registry-clinicaltrials-gov-identifier-nct02298413
#20
Giuseppe Tarantini, Marco Mojoli, Giulia Masiero, Bernardo Cortese, Bruno Loi, Attilio Varricchio, Gabriele Gabrielli, Alessandro Durante, Giampaolo Pasquetto, Paolo Calabrò, Roberto Gistri, Gabriele Tumminello, Leonardo Misuraca, Francesco Pisano, Alfonso Ielasi, Pietro Mazzarotto, Sebastian Coscarelli, Valerio Lucci, Luciano Moretti, Annamaria Nicolino, Alessandro Colombo, Zoran Olivari, Massimo Fineschi, Davide Piraino, Luigi Piatti, Umberto Canosi, Paola Tellaroli, Donatella Corrado, Chiara Rovera, Giuseppe Steffenino
OBJECTIVES: To compare clinical outcomes of patients treated with overlapping versus non-overlapping Absorb BVS. BACKGROUND: Limited data are available on the clinical impact of stent overlap with the Absorb BVS bioresorbable stent. METHODS: We compared outcomes of patients receiving overlapping or non-overlapping Absorb BVS in the multicenter prospective RAI Registry. RESULTS: Out of 1,505 consecutive patients treated with Absorb BVS, 1,384 were eligible for this analysis...
May 13, 2017: Catheterization and Cardiovascular Interventions
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