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https://www.readbyqxmd.com/read/28228950/outcomes-of-coronary-artery-bypass-grafting-versus-percutaneous-coronary-intervention-with-second-generation-drug-eluting-stents-for-patients-with-multivessel-and-unprotected-left-main-coronary-artery-disease
#1
Kyriacos Papadopoulos, Ioannis Lekakis, Evagoras Nicolaides
OBJECTIVES: To compare the efficacy and safety of percutaneous coronary intervention using second-generation drug-eluting stents with those of coronary artery bypass grafting among patients with multivessel disease and/or unprotected left main coronary artery disease in terms of mortality, myocardial infarction, repeat revascularization, and angina. BACKGROUND: Although coronary artery disease is a leading cause of death in the Western world and in many developing countries, its optimal treatment is still a matter of controversy...
2017: SAGE Open Medicine
https://www.readbyqxmd.com/read/28227224/cfd-analysis-of-strut-influence-on-blood-flow-in-stent-implanted-left-main-coronary-artery-bifurcation
#2
Yuya Yamada, Takahiro Tsukahara, Masahiro Motosuke, Yusuke Fujino, Yuya Yamada, Takahiro Tsukahara, Masahiro Motosuke, Yusuke Fujino, Takahiro Tsukahara, Yuya Yamada, Yusuke Fujino, Masahiro Motosuke
We numerically studied blood flows in a simulated branching pipe of coronary artery bifurcation, which is affected by stent implantation. We found that stent struts provide effects as guide vanes and blockages on the flow into circumflex branch. The former effect increases the flow rate and shear stress on the arteriosclerosis-prone site. The blockage effect may overwhelm the guide effect depending on a strut position against the inflow.
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226721/overcoming-spatio-temporal-limitations-using-dynamically-scaled-in-vitro-pc-mri-a-flow-field-comparison-to-true-scale-computer-simulations-of-idealized-stented-and-patient-specific-left-main-bifurcations
#3
Susann Beier, John Ormiston, Mark Webster, John Cater, Stuart Norris, Pau Medrano-Gracia, Alistair Young, Kathleen Gilbert, Brett Cowan, Susann Beier, John Ormiston, Mark Webster, John Cater, Stuart Norris, Pau Medrano-Gracia, Alistair Young, Kathleen Gilbert, Brett Cowan, Stuart Norris, Brett Cowan, Pau Medrano-Gracia, Kathleen Gilbert, Mark Webster, Alistair Young, Susann Beier, John Cater, John Ormiston
The majority of patients with angina or heart failure have coronary artery disease. Left main bifurcations are particularly susceptible to pathological narrowing. Flow is a major factor of atheroma development, but limitations in imaging technology such as spatio-temporal resolution, signal-to-noise ratio (SNRv), and imaging artefacts prevent in vivo investigations. Computational fluid dynamics (CFD) modelling is a common numerical approach to study flow, but it requires a cautious and rigorous application for meaningful results...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28223737/pancreaticoduodenectomy-secondary-stenting-of-the-celiac-trunk-after-inefficient-median-arcuate-ligament-release-and-reoperation-as-an-alternative-to-simultaneous-hepatic-artery-reconstruction
#4
Théophile Guilbaud, Jacques Ewald, Olivier Turrini, Jean Robert Delpero
In patients undergoing pancreaticoduodenectomy (PD), unrecognized hemodynamically significant celiac axis (CA) stenosis impairs hepatic arterial flow by suppressing the collateral pathways supplying arterial flow from the superior mesenteric artery and leads to serious hepatobiliary complications due to liver and biliary ischemia, with a high rate of mortality. CA stenosis is usually due to an extrinsic compression by a previously asymptomatic median arcuate ligament (MAL). MAL is diagnosed by computerized tomography in about 10% of the candidates for PD, but only half are found to be hemodynamically significant during the gastroduodenal artery clamping test with Doppler assessment, which is mandatory before any resection...
February 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28223049/outcomes-of-coronary-artery-bypass-and-stents-for-unprotected-left-main-coronary-stenosis
#5
Yin-Shu Chang, Jia-Xiang Wang, Da-Wei Chang
BACKGROUND: This study assessed the short-, medium-, and long-term outcomes of coronary artery bypass grafting vs stenting for patients with unprotected left main coronary artery disease through a meta-analysis of randomized controlled trials. METHODS: PubMed, Embase, Scopus, Web of Science, Cochrane Library, and major conference proceedings databases were systematically searched for randomized controlled trials of coronary artery bypass grafting compared with stents in unprotected left main coronary artery disease...
February 18, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28222987/french-multicenter-experience-with-the-gore-tigris-vascular-stent-in-superficial-femoral-and-popliteal-arteries
#6
Maxime Sibé, Adrien Kaladji, Claire Boirat, Alain Cardon, Xavier Chaufour, Jean-Pierre Bossavy, Bertrand Saint-Lebes
BACKGROUND: Preliminary results in small single-center studies after stenting with the GORE TIGRIS Vascular Stent (W. L. Gore & Associates, Flagstaff, Ariz) show promising short-term primary patency rates, but larger, multicenter studies are needed. This study therefore investigated the performance of the GORE TIGRIS Vascular Stent at three different centers in France in patients with symptomatic peripheral artery disease. METHODS: This retrospective, single-arm, multicenter cohort study included 215 patients with peripheral artery disease (Rutherford-Becker category 2-6) who were treated with the GORE TIGRIS Vascular Stent, a dual-component stent consisting of a nitinol wire frame combined with a fluoropolymer-interconnecting structure...
February 17, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28222985/concurrent-renal-artery-stent-during-endovascular-infrarenal-aortic-aneurysm-repair-confers-higher-risk-for-30-day-acute-renal-failure
#7
Besma Nejim, Isibor Arhuidese, Muhammmad Rizwan, Lana Khalil, Satinderjit Locham, Devin Zarkowsky, Philip Goodney, Mahmoud B Malas
OBJECTIVE: Concurrent renal artery angioplasty and stenting (RAAS) during endovascular aneurysm repair (EVAR) of infrarenal abdominal aortic aneurysm (AAA) has been practiced in an attempt to maintain renal perfusion. The aim of this study was to identify the current practice of RAAS during EVAR and its effect on perioperative renal outcome. METHODS: Patients with infrarenal AAA were identified from the American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP, 2011-2014) database...
February 17, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28220463/can-we-improve-the-outcomes-of-multivessel-disease-using-modified-syntax-and-residual-syntax-scores
#8
REVIEW
Alfredo E Rodriguez, Carlos Fernandez-Pereira, Juan Mieres, Javier Mendoza, Florencia Sartori
PURPOSE OF REVIEW: In spite of the benefits of drug eluting (DES), these advantages were not translated to better outcome when percutaneous coronary interventions (PCI) were compared with coronary artery bypass surgery. PCI strategy allowing stent deployment in all intermediate lesions including small vessels together with DES design may be the reasons of these findings. RECENT FINDINGS: Recently randomized and observational studies demonstrated using functional flow reserve analysis, residual Syntax score risk, or residual ERACI score after PCI that a reasonably incomplete revascularization was associated with good long-term outcome and low events rate at follow-up...
March 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28220461/new-generation-coronary-stents-current-data-and-future-directions
#9
REVIEW
Ankur Kalra, Hasan Rehman, Sahil Khera, Braghadheeswar Thyagarajan, Deepak L Bhatt, Neal S Kleiman, Robert W Yeh
PURPOSE OF REVIEW: Drug-eluting stents are the mainstay in the treatment of coronary artery disease using percutaneous coronary intervention. Innovations developed to overcome the limitations of prior generations of stents include biodegradable polymer stents, drug-eluting stents without a polymer, and bioabsorbable scaffolds. Our review briefly discusses the clinical profiles of first- and second-generation coronary stents, and provides an up-to-date overview of design, technology, and clinical safety and efficacy profiles of newer generation coronary stents discussing the relevant clinical trials in this rapidly evolving area of interventional cardiology...
March 2017: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/28219914/nickel-associated-delayed-multiple-white-matter-lesions-after-stent-assisted-coil-embolization-of-intracranial-unruptured-aneurysm
#10
Hun Soo Park, Ichiro Nakagawa, Shohei Yokoyama, Daisuke Wajima, Takeshi Wada, Yasushi Motoyama, Kimihiko Kichikawa, Hiroyuki Nakase
Metal-induced encephalopathy after stent-assisted coil embolization is extremely rare. The present report describes two patients who presented with symptomatic intracranial parenchymal edematous lesions after stent-assisted coil embolization. A 64-year-old woman underwent stent-assisted coil embolization for a left internal carotid artery aneurysm; 21 days after the procedure she presented with right hand weakness and MRI revealed multifocal white matter lesions. Another woman aged 52 years underwent stent-assisted coil embolization for right vertebral artery aneurysm; 18 days after the procedure she presented with left-sided sensory disturbance and MRI demonstrated multiple white matter lesions...
February 20, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28219851/understanding-the-requirements-of-self-expandable-stents-for-heart-valve-replacement-radial-force-hoop-force-and-equilibrium
#11
María Sol Cabrera, Cees W J Oomens, Frank P T Baaijens
A proper interpretation of the forces developed during stent crimping and deployment is of paramount importance for a better understanding of the requirements for successful heart valve replacement. The present study combines experimental and computational methods to assess the performance of a nitinol stent for tissue-engineered heart valve implantation. To validate the stent model, the mechanical response to parallel plate compression and radial crimping was evaluated experimentally. Finite element simulations showed good agreement with the experimental findings...
February 7, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28219588/early-removal-of-double-j-stents-decreases-urinary-tract-infections-in-living-donor-renal-transplantation-a-prospective-randomized-clinical-trial
#12
S Liu, G Luo, B Sun, J Lu, Q Zu, S Yang, X Zhang, J Dong
BACKGROUND: The optimal timing for stent removal after renal transplantation remains controversial. This article describes an interim analysis of a randomized, prospective, double-blind trial aimed at detecting differences in urological complications between early ureteral stent removal at 1 week and routine ureteral stent removal at 4 weeks. METHODS: Between October 2010 and March 2015, 103 patients who underwent living donor renal transplantation at a single center were pre-operatively randomly assigned to the early ureteral stent removal (at 1 week) group or the routine ureteral stent removal (at 4 weeks) group...
March 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28217690/iatrogenic-acute-ascending-aortic-dissection-with-intramural-hematoma-during-coronary-artery-stenting-a-case-report
#13
Mohamad El-Haress, Hicham Daadaa, Shima Shahjouei, Firas El-Bitar, Hisham Bahmad
BACKGROUND: Iatrogenic acute ascending aortic dissection during percutaneous coronary intervention (PCI) is an exceptionally rare and life-threatening sequel that requires early and accurate diagnosis along with rapid management. No guidelines have yet been established to direct decisions on the different treatment options that can be employed in the setting of acute aortic dissections caused by PCI. However, similar cases have been treated either by intracoronary stenting and conservative management as in localized aortocoronary dissections or by surgical intervention in cases of extensive aortic dissections...
2017: Frontiers in Surgery
https://www.readbyqxmd.com/read/28217382/pipeline-embolization-device-as-primary-treatment-for-cervical-internal-carotid-artery-pseudoaneurysms
#14
Arthur Wang, Justin Santarelli, Michael F Stiefel
BACKGROUND: Limited data exists on the durability and occlusion rate of treating extracranial cervical internal carotid artery pseudoaneurysms using the pipeline embolization device (PED) flow-diverting stent. METHODS: Three patients presenting with dissecting cervical internal carotid artery pseudoaneurysms were treated with the PED as the sole treatment modality. RESULTS: In all three patients, successful aneurysmal occlusion and parent vessel reconstruction occurred on immediate angiography and continued on 6-month follow-up...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28216982/late-onset-severe-biliary-bleeding-after-endoscopic-pigtail-plastic-stent-insertion
#15
Muneji Yasuda, Hideki Sato, Yuki Koyama, Tomoki Sakakida, Takumi Kawakami, Takeshi Nishimura, Hideki Fujii, Yoshikazu Nakatsugawa, Shinya Yamada, Naoya Tomatsuri, Yusuke Okuyama, Hiroyuki Kimura, Takaaki Ito, Hiroyuki Morishita, Norimasa Yoshida
Here, we report our experience with a case of severe biliary bleeding due to a hepatic arterial pseudoaneurysm that had developed 1 year after endoscopic biliary plastic stent insertion. The patient, a 78-year-old woman, presented with hematemesis and obstructive jaundice. Ruptured hepatic arterial pseudoaneurysm was diagnosed, which was suspected to have been caused by long-term placement of an endoscopic retrograde biliary drainage (ERBD) stent. This episode of biliary bleeding was successfully treated by transarterial embolization (TAE)...
January 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28216502/-treatment-of-ureteral-fistula-and-stricture-following-renal-transplantation-with-boari-flap
#16
Peng Jin, Jinliang Xie, Jingeng Dun, Xiang Ding, Cheng Zhou, Xiangrong Zhu, Lielin Wu, Bo Yang, Gang Zhang
To estimate the incidence rate of ureteral fistula and stricture after kidney transplantation, and to evaluate the effect of bladder flap (Boari flap) on ureteral complication of the transplanted kidney. 
 Methods: The clinical data and risk factors from 270 recipients of renal transplantation, who came from the Centre of Organ Transplantation, Xiangya Hospital, Central South University from January 2010 to January 2015, were retrospectively analyzed. The surgical management included Boari flap for ureteral reconstruction, neoureterocystostomy and endoscopic therapy with double-J (DJ) stent placement...
January 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28216476/combined-use-of-directional-atherectomy-and-drug-coated-balloon-for-the-endovascular-treatment-of-common-femoral-artery-disease-immediate-and-one-year-outcomes
#17
Angelo Cioppa, Eugenio Stabile, Luigi Salemme, Grigore Popusoi, Armando Pucciarelli, Fortunato Iacovelli, Antonella Arcari, Enrico Coscioni, Bruno Trimarco, Giovanni Esposito, Tullio Tesorio
AIMS: Surgical endarterectomy is the therapy of choice for atherosclerotic common femoral artery (CFA) obstruction. Recently, some large single-centre series have shown encouraging results for the percutaneous treatment of CFA obstructions. The purpose of this study was to evaluate the safety, feasibility, and one-year efficacy of the endovascular treatment of CFA obstructions with combined use of directional atherectomy (DA) and a paclitaxel-coated balloon (DCB). METHODS AND RESULTS: Between January 2012 and July 2014, 30 consecutive patients with severely calcified obstructions of the common femoral artery were treated in our centre using DA followed by DCB dilatation...
February 20, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28216394/the-pconus-device-for-treatment-of-complex-wide-neck-anterior-communicating-artery-aneurysms
#18
Paul Emile Labeyrie, Benjamin Gory, Marta Aguilar-Perez, Elisa Pomero, Alessandra Biondi, Roberto Riva, Francis Turjman, Hans Henkes
BACKGROUND: and Purpose: Anterior communicating artery (AcomA) aneurysms with a wide neck are often not feasible for endovascular coiling. Emerging devices for neck protection, as the pCONus stent, are promising for endovascular treatment of challenging intracranial aneurysms. We report the preliminary results with pCONus in the treatment of wide-neck AcomA aneurysms. MATERIALS AND METHODS: All consecutive patients harboring AcomA aneurysms treated with pCONus in 3 European centers were retrospectively reviewed...
February 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28216358/outcomes-of-thoracic-endovascular-aortic-repair-using-aortic-arch-chimney-stents-in-high-risk-patients
#19
Igor Voskresensky, Salvatore T Scali, Robert J Feezor, Javairiah Fatima, Kristina A Giles, Rosamaria Tricarico, Scott A Berceli, Adam W Beck
BACKGROUND: Aortic arch disease is a challenging clinical problem, especially in high-risk patients, in whom open repair can have morbidity and mortality rates of 30% to 40% and 2% to 20%, respectively. Aortic arch chimney (AAC) stents used during thoracic endovascular aortic repair (TEVAR) are a less invasive treatment strategy than open repair, but the current literature is inconclusive about the role of this technology. The focus of this analysis is on our experience with TEVAR and AAC stents...
February 16, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28216356/fixed-and-variable-cost-of-carotid-endarterectomy-and-stenting-in-the-united-states-a-comparative-study
#20
Tammam Obeid, Husain Alshaikh, Besma Nejim, Isibor Arhuidese, Satinderjit Locham, Mahmoud Malas
OBJECTIVE: Despite multiple landmark clinical trials, little data exists on real-world cost of carotid artery stenting (CAS) and carotid endarterectomy (CEA) to the United States healthcare system. We aim to study differences in actual hospitalization cost between patients who underwent CAS vs CEA in a nationally representative database. METHODS: We studied hospital discharge and billing records of all patients, in the Premier Perspective Database, who underwent CEA or CAS between the third quarter of 2009 and the first quarter of 2015...
February 16, 2017: Journal of Vascular Surgery
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