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Intravascular stent

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https://www.readbyqxmd.com/read/29776653/accuracy-of-phase-contrast-velocity-mapping-proximal-and-distal-to-stent-artifact-during-cardiac-magnetic-resonance-imaging
#1
Catherine M Avitabile, Matthew A Harris, Ravi S Doddasomayajula, Steven G Chopski, Matthew J Gillespie, Yoav Dori, Andrew C Glatz, Mark A Fogel, Kevin K Whitehead
Little data are available on the accuracy of phase-contrast magnetic resonance imaging (PC-MRI) velocity mapping in the vicinity of intravascular metal stents other than nitinol stents. Therefore, we sought to determine this accuracy using in vitro experiments. An in vitro flow phantom was used with 3 stent types: (1) 316L stainless steel, (2) nitinol self-expanding, and (3) platinum-iridium. Steady and pulsatile flow was delivered with a magnetic resonance imaging-compatible pump (CardioFlow 5000, Shelley Medical, London, Ontario, Canada)...
April 20, 2018: American Journal of Cardiology
https://www.readbyqxmd.com/read/29774986/everolimus-drug-eluting-stent-performance-in-patients-with-long-coronary-lesions-the-multicenter-longprime-registry
#2
José Francisco Díaz Fernández, Santiago Jesús Camacho Freire, Juan Carlos Fernández Guerrero, Nicolas Delarche, Christophe Bretelle, Javier Zueco Gil, Ramón López Palop, Bruno García Del Blanco, Vicente Mainar Tello, Franck Albert
OBJECTIVES: To assess the efficacy and safety of the Xience Prime everolimus-eluting stent (EES) in long coronary lesions in a real-world population. BACKGROUND: Long lesions are considered difficult technically and in terms of achieving successful clinical outcomes. With first generation DES, MACE can be as high as 10% at a short-medium term follow-up. There are a few data available in this subset regarding the use of second generation DES METHODS: A prospective, multicenter registry of consecutive patients (aged 64...
May 18, 2018: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29765397/lvis-jr-device-for-y-stent-assisted-coil-embolization-of-wide-neck-intracranial-aneurysms-a-multicenter-experience
#3
Edgar A Samaniego, Aldo A Mendez, Thanh N Nguyen, Vladimir Kalousek, Waldo R Guerrero, Sudeepta Dandapat, Guilherme Dabus, Italo Linfante, Ameer E Hassan, Alexander Drofa, Evgueni Kouznetsov, David Leedahl, David Hasan, Alberto Maud, Santiago Ortega-Gutierrez
Background and Purpose: Complex wide-neck intracranial aneurysms are challenging to treat. We report a multicenter experience using the LVIS Jr stent for "Y-stent"-assisted coiling embolization of wide-neck bifurcation aneurysms. Methods: Seven centers provided retrospective data on patients who underwent Y-stenting. Technical complications, immediate posttreatment angiographic results, clinical outcomes, and imaging follow-up were assessed. Results: Thirty patients/aneurysms were treated: 15 basilar tip, 8 middle cerebral artery, 4 anterior communicating artery, 1 pericallosal, and 2 posterior inferior cerebellar artery aneurysms...
April 2018: Interventional Neurology
https://www.readbyqxmd.com/read/29754669/comparison-of-fractional-flow-reserve-and-intravascular-ultrasound-guided-intervention-strategy-for-clinical-outcomes-in-patients-with-intermediate-stenosis-flavour-rationale-and-design-of-a-randomized-clinical-trial
#4
Jeehoon Kang, Bon-Kwon Koo, Xinyang Hu, Joo Myung Lee, Joo-Yong Hahn, Hyoung-Mo Yang, Eun-Seok Shin, Chang-Wook Nam, Joon-Hyung Doh, Bong-Ki Lee, Chul Ahn, JianAn Wang, Seung-Jae Tahk
BACKGROUND: Coronary angiography has limitations in defining the ischemia-causing stenotic lesion, especially in cases with intermediate coronary stenosis. Fractional flow reserve (FFR) is a current standard method to define the presence of ischemia, and intravascular ultrasound (IVUS) is the most commonly used invasive imaging tool that can provide the lesion geometry and can provide the information on plaque vulnerability. The primary aim of this study is to compare the safety and efficacy of FFR-guided and IVUS-guided percutaneous coronary intervention (PCI) strategies in patients with intermediate coronary stenosis...
May 2018: American Heart Journal
https://www.readbyqxmd.com/read/29747248/-experience-of-successful-rescue-from-5-cases-of-internal-carotid-artery-injury-during-transnasal-endoscopic-skull-base-surgery
#5
F Yin, J W Sun, Y F Wang, T Guo, W Zhao
Objective: To investigate the cause and urgent management of internal carotid artery injury during transnasal endoscopic skull base surgery. Methods: Five cases of internal carotid artery injury encountered during transnasal endoscopic skull base surgery in Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of University of Science of Technology of China, Anhui Provincial Hospital from December 2010 to July 2017 were analysed retrospectively. There were 2 cases of adenoid cystic carcinoma, 1 case of salivary gland-type adenocarcinoma, 1 case of petrous apex cholesterol granulomas and 1 case of squamous carcinoma...
April 7, 2018: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/29745539/-endothelial-injury-and-its-repair-strategies-after-intravascular-stents-implantation
#6
REVIEW
Yadong Xi, Yuhua Huang, Ruolin Du, Yazhou Wang, Guixue Wang, Tieying Yin
Coronary atherosclerotic heart disease is a serious threat to human life and health. In recent years, the main treatment for it is to implant the intravascular stent into the lesion to support blood vessels and reconstruct blood supply. However, a large number of experimental results showed that mechanical injury and anti-proliferative drugs caused great damage after stent implantation, and increased in-stent restenosis and late thrombosis risk. Thus, maintaining the integrity and normal function of the endothelium can significantly reduce the rate of thrombosis and restenosis...
April 1, 2018: Sheng Wu Yi Xue Gong Cheng Xue za Zhi, Journal of Biomedical Engineering, Shengwu Yixue Gongchengxue Zazhi
https://www.readbyqxmd.com/read/29743623/in-vivo-molecular-imaging-of-glutamate-carboxypeptidase-ii-expression-in-re-endothelialisation-after-percutaneous-balloon-denudation-in-a-rat-model
#7
Heike Endepols, Felix M Mottaghy, Sakine Simsekyilmaz, Jan Bucerius, Felix Vogt, Oliver Winz, Raphael Richarz, Philipp Krapf, Bernd Neumaier, Boris D Zlatopolskiy, Agnieszka Morgenroth
The short- and long-term success of intravascular stents depends on a proper re-endothelialisation after the intervention-induced endothelial denudation. The aim of this study was to evaluate the potential of in vivo molecular imaging of glutamate carboxypeptidase II (GCPII; identical with prostate-specific membrane antigen PSMA) expression as a marker of re-endothelialisation. Fifteen Sprague Dawley rats underwent unilateral balloon angioplasty of the common carotid artery (CCA). Positron emission tomography (PET) using the GCPII-targeting tracer [18 F]DCFPyL was performed after 5-21 days (scan 60-120 min post injection)...
May 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29732926/imaging-guided-pre-dilatation-stenting-post-dilatation-ipsp-a-protocolized-approach-highlighting-the-importance-of-intravascular-imaging-for-implantation-of-bioresorbable-scaffolds
#8
Ziad A Ali, Keyvan Karimi Galougahi, Richard Shlofmitz, Akiko Maehara, Gary S Mintz, Alexandre Abizaid, Daniel Chamié, Jonathan Hill, Patrick W Serruys, Yoshinobu Onuma, Gregg W Stone
The advent of the fully bioresorbable vascular scaffold (BVS) is the latest step in a series of advancements in the design of intracoronary stents over the past few decades. The novelty of this technology is in providing temporary vessel scaffolding and local antiproliferative therapy to prevent neointimal hyperplasia after percutaneous coronary intervention followed by gradual resorption of the scaffold to restore the native vessel anatomy and physiology-a process termed vascular reparative therapy. Areas covered: The first generation of BVS has not been able to fully match the high benchmark in safety and efficacy set by contemporary metallic drug-eluting stents...
May 7, 2018: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/29718158/management-of-left-main-disease-an-update
#9
Jean Fajadet, Davide Capodanno, Gregg W Stone
A severe narrowing of the left main coronary artery (LMCA), usually due to atherosclerosis, jeopardizes a large area of myocardium and increases the risk of major adverse cardiac events. Management strategies for LMCA disease include coronary artery bypass grafting (CABG) and percutaneous coronary intervention (PCI). In general, PCI offers more rapid recovery and a lower early adverse event rate, whereas CABG offers a more durable procedure. The largest of six LMCA trials comparing PCI with CABG recently reported that in patients with site-reported low or intermediate anatomical complexity PCI was non-inferior to CABG with respect to the composite of death, stroke, or myocardial infarction at 3 years...
April 30, 2018: European Heart Journal
https://www.readbyqxmd.com/read/29706477/usefulness-of-the-finet-law-to-guide-stent-size-selection-in-ostial-left-main-stenting-comparison-with-standard-angiographic-estimation
#10
Gianluca Rigatelli, Marco Zuin, Federico Ronco, Francesco Caprioglio, Daniele Cavazzini, Sara Giatti, Gabriele Braggion, Stefano Perilli, Van Tan Nguyen
BACKGROUNDS: Intravascular ultrasound has been suggested to optimize stent diameter and length in Left Main (LM) procedures, but in the real-world ostial LM stenting is often accomplished with angiography only guidance. The Finet law which regulates the fractal geometry of human bifurcation has the potential to increase the accuracy of stent-sizing. To retrospectively evaluating the impact on outcomes of the addition of Finet Law to standard quantitative coronary angiography (QCA) in guiding stent selection of ostial LM stenting compared to standard angiography estimation...
April 10, 2018: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29704104/total-endovascular-iliocaval-reconstruction-using-polytetrafluoroethylene-stent-graft-placement-for-the-treatment-of-inferior-vena-cava-resection
#11
Kyle J Cooper, Jeffrey Forris Beecham Chick, Minhaj S Khaja, Ravi N Srinivasa, Jordan Fenlon, Charles Brewerton, David M Williams
Resection of the inferior vena cava (IVC) is a rare surgical technique that is occasionally combined with nephrectomy in the setting of renal malignancy with intravascular tumor extension. While this may be fairly well tolerated in some patients due to extensive collateralization in the venous system, there is a clear potential for lower extremity venous insufficiency and deep vein thrombosis (DVT). This report describes a patient who underwent right nephrectomy and segmental IVC resection from the subhepatic space to the iliac confluence, which was complicated by profoundly symptomatic lower extremity DVT and gastrointestinal hemorrhage due to system-to-portal shunting...
April 27, 2018: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/29695382/internal-versus-external-compression-of-a-left-ventricular-assist-device-outflow-graft-diagnosis-with-intravascular-ultrasound-and-treatment-with-stenting
#12
Cory R Trankle, Mohammed A Quader, John D Grizzard, Daniel G Tang, Keyur B Shah, Kendall Paris, Christina K Shepard, Zachary M Gertz
No abstract text is available yet for this article.
May 2018: Circulation. Heart Failure
https://www.readbyqxmd.com/read/29679449/value-of-intravascular-ultrasound-in-guiding-coronary-interventions
#13
REVIEW
Hae Geun Song, Soo-Jin Kang, Gary S Mintz
There has been great effort to improve clinical outcome in percutaneous treatment for coronary artery disease. Complementary to coronary angiography, intravascular ultrasound (IVUS) provides in vivo tomographic anatomic information, enabling to evaluate from the lumen to the vessel wall. As a result, IVUS has had a pivotal role to understand pathophysiology of coronary artery disease and improve clinical outcome. It provides preprocedural information to evaluate stenosis severity and plaque characteristics and helps with optimal stent deployment, minimizing underexpansion and geographic miss that are the major mechanisms of stent failure...
April 2018: Echocardiography
https://www.readbyqxmd.com/read/29672613/intravascular-ultrasound-assisted-sizing-in-thoracic-endovascular-aortic-repair-improves-aortic-remodeling-in-type-b-aortic-dissection
#14
Julia Lortz, Konstantinos Tsagakis, Christos Rammos, Michael Horacek, Thomas Schlosser, Heinz Jakob, Tienush Rassaf, Rolf Alexander Jánosi
The precise sizing of the stent graft in thoracic endovascular aortic repair (TEVAR) affects aortic remodeling and hence, further outcome. Covering the proximal entry tear is essential for successful treatment of Type B aortic dissection. Intravascular ultrasound (IVUS) enables real-time aortic diameter assessment, and is especially useful when computed tomography (CT) image quality is poor. IVUS, however, is not routinely utilized due to cost inefficiency. We investigated the impact of IVUS-assisted stent graft sizing on aortic remodeling in TEVAR...
2018: PloS One
https://www.readbyqxmd.com/read/29663177/intravascular-ultrasound-assessment-of-the-effects-of-rotational-atherectomy-in-calcified-coronary-artery-lesions
#15
Sung Sik Kim, Myong Hwa Yamamoto, Akiko Maehara, Novalia Sidik, Kohei Koyama, Colin Berry, Keith G Oldroyd, Gary S Mintz, Margaret McEntegart
We sought to clarify intravascular ultrasound (IVUS) features of rotational atherectomy (RA) of calcified lesions. IVUS was performed post-RA and post-stent in 38 lesions and analyzed every 1 mm. Pre-intervention IVUS was performed when the IVUS catheter crossed the lesion (n = 11). Calcium Index was average calcium angle multiplied by calcium length. We compared lowest (n = 13), middle (n = 13), and highest (n = 12) Calcium Index tertiles. Reverberations (multiple reflections from calcium) with a concave-shaped lumen in the post-RA IVUS were considered to represent RA-related calcium modification...
April 16, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29651329/ischaemia-of-the-medullary-cone-after-stent-graft-implantation-in-a-patient-with-abdominal-aortic-aneurysm-a-case-study
#16
Mariusz Wachowski, Michał Polguj, Janusz Ścibór, Agata Majos
Preoperative visualization of the Adamkiewicz artery - the vessel which is to a great extent responsible for supplying blood to the medullary cone - is an important step which must be taken before initiating restorative procedures in the aorta. We present a case of a 67-year-old patient who underwent an intravascular stent-graft implantation procedure, due to clinical signs of abdominal aortic aneurysm. Routine pre-operative computed tomography examination failed to demonstrate the Adamkiewicz artery. On the second day after the surgery, as a result of unexpected clinical deterioration, an magnetic resonance imaging examination of the lumbar spine was carried out...
March 2018: Wideochirurgia i Inne Techniki Mało Inwazyjne, Videosurgery and Other Miniinvasive Techniques
https://www.readbyqxmd.com/read/29650398/the-role-of-optical-coherence-tomography-in-the-setting-of-acute-myocardial-infarction
#17
REVIEW
Yongcheol Kim, Thomas W Johnson, Takashi Akasaka, Myung Ho Jeong
In recent years, intravascular imaging-guided percutaneous coronary intervention (PCI) has been increasing in patients with acute myocardial infarction (AMI). However, the role of optical coherence tomography (OCT) has not been established in the setting of AMI despite OCT providing superior resolution (10μm axial resolution) and facilitating assessment of baseline lesion characteristics and post-intervention evaluation of the acute result of stent implantation, including visualization of procedural dissections, malapposition, tissue prolapse, and thrombus...
April 9, 2018: Journal of Cardiology
https://www.readbyqxmd.com/read/29644449/predictive-performance-of-dual-modality-of-computed-tomography-angiography-and-intravascular-ultrasound-for-no-reflow-phenomenon-after-percutaneous-coronary-stenting-in-stable-coronary-artery-disease
#18
Masaaki Okutsu, Takeshi Horio, Hisataka Tanaka, Maki Akiyama, Niro Okimoto, Toshiyuki Tsubouchi, Kenji Kawajiri, Yasuhiro Ohashi, Satoru Sumitsuji, Yuji Ikari
Attenuated plaque on intravascular ultrasound (IVUS) and low attenuation plaque on computed tomography angiography (CTA) are associated with no-reflow phenomenon during percutaneous coronary intervention (PCI). However, evaluation by a single modality has been unable to satisfactorily predict this phenomenon. We investigated whether the combination of IVUS and CTA findings can ameliorate the predictive potential for no-reflow phenomenon after stent implantation during PCI in stable coronary artery disease (CAD)...
April 11, 2018: Heart and Vessels
https://www.readbyqxmd.com/read/29623170/a-practical-approach-to-assessing-stent-results-with-ivus-or-oct
#19
REVIEW
Daisuke Hachinohe, Satoru Mitomo, Luciano Candilio, Azeem Latib
Coronary angiography is routinely used to assess the extent and severity of coronary artery disease and for decision-making during percutaneous coronary interventions (PCI). However, it is sometimes inadequate for deciding a strategy and defining optimal stenting outcomes. In this review, we present a comprehensive and practical approach to PCI using intravascular ultrasound or optical coherence tomography to optimize stent deployment and assess procedural complications after stent implantation.
January 2018: Methodist DeBakey Cardiovascular Journal
https://www.readbyqxmd.com/read/29622993/stent-boost-enhancement-compared-to-intravascular-ultrasound-in-the-evaluation-of-stent-expansion-in-elective-percutaneous-coronary-interventions
#20
Mohamed Laimoud, Yasser Nassar, Walid Omar, Akram Abdelbarry, Helmy Elghawaby
Background: Stent underexpansion is a major risk factor for in-stent restenosis and acute in-stent thrombosis1 Intravascular ultrasound (IVUS) is one of the standards for detection of stent underexpansion (de Feyter et al. 1999; Mintz et al., 2001). StentBoost (SB) enhancement allows an improved angiographic visualization of the stent (Koolen et al., 2005). Aim of work: Comparison of stent expansion by IVUS and SB enhancement and detection of value of SB to guide dilatation post stent deployment...
March 2018: The Egyptian heart journal: (EHJ): official bulletin of the Egyptian Society of Cardiology
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