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Intravascular stent

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https://www.readbyqxmd.com/read/29146671/predictors-and-long-term-clinical-outcome-of-longitudinal-stent-deformation-insights-from-pooled-analysis-of-korean-multicenter-drug-eluting-stent-cohort
#1
Tae-Min Rhee, Kyung Woo Park, Joo Myung Lee, Michael S Lee, Ki-Hyun Jeon, Hyun-Jae Kang, Bon-Kwon Koo, Jay Young Rhew, Kwang Soo Cha, Jang-Ho Bae, Kyoo-Rok Han, Si-Hoon Park, Woo-Jung Park, Seung-Woon Rha, Seok-Kyu Oh, Hyuck Moon Kwon, Ki-Bae Seung, Taehoon Ahn, Sang-Hyun Kim, Hyo-Soo Kim
BACKGROUND: There are limited data on the frequency of and factors associated with quantitative coronary angiography (QCA)-defined longitudinal stent deformation (LSD) in various contemporary drug-eluting stents platforms. This study sought to evaluate the predictors of LSD and its long-term clinical implication. METHODS AND RESULTS: A patient-level pooled analysis was performed with 7350 lesions in 5871 patients treated with platinum-chromium-based everolimus-eluting stent (Promus Element), cobalt-chromium-based everolimus-eluting stent (Promus/Xience V), or cobalt-chromium-based zotarolimus-eluting stent (Endeavor Resolute)...
November 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29131802/acute-and-one-year-clinical-outcomes-following-implantation-of-bioresorbable-vascular-scaffolds-the-absorb-uk-registry
#2
Andreas Baumbach, Azfar Zaman, Nick Ej West, Peter O'Kane, Mohaned Egred, Thomas Johnson, Stephen Wheatcroft, Bowles Ruth, Adam de Belder, Georgious Bouras, Alexandra Lansky, Jonathan Hill, Anthony Mathur, Mark A de Belder, Adrian Banning
AIMS: The aim was to monitor practice patterns and outcomes in patients treated with Absorb bioresorbable vascular scaffolds (BVS) during the early phase of usage in the UK. METHODS AND RESULTS: A total of 1005 patients with de-novo coronary lesions were treated using careful implantation techniques at 24 centers. Follow-up at one year was obtained in 99%. An independent clinical event committee and angiographic corelab adjudicated all events. Patient age was 52 years and 46% presented with acute coronary syndromes...
November 14, 2017: EuroIntervention
https://www.readbyqxmd.com/read/29131504/balloon-pin-hole-rupture-during-percutaneous-coronary-intervention-for-recurrent-calcified-in-stent-restenosis-a-case-report
#3
Nobuhiro Murata, Tadateru Takayama, Takafumi Hiro, Atsushi Hirayama
Percutaneous coronary intervention (PCI) for patients with in-stent restenosis (ISR) is generally considered safe and effective. However, due to increased tissue hardness, PCI for calcified intra-stent ISR is technically challenging. Here, we report severe angioplasty-related complications in a patient presenting with calcified, recurrent ISR following PCI. After receiving drug-coated balloon (DCB) angioplasty for an initial ISR, the patient developed recurrent ISR during the follow-up period. Intravascular imaging revealed intra-stent calcifications and balloon angioplasty was subsequently performed...
November 13, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29127709/pulmonary-damage-following-right-ventricular-outflow-tachycardia-ablation-in-a-child-when-electroanatomical-mapping-isn-t-good-enough
#4
Neha Bansal, Daisuke Kobayashi, Peter P Karpawich
A 14-year-old female was referred for severe pulmonary valve insufficiency after undergoing radiofrequency ablation for a right ventricular outflow tract tachycardia that originated in the proximal pulmonary artery at 10 years of age. Clinical records indicated that ablation was guided solely by electrograms and electroanatomical mapping. Due to myocardial tissue extensions, mapping failed to identify the level of the pulmonary valve annulus, which resulted in delivery of energy on the valve proper and into the pulmonary artery...
November 11, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29122129/a-new-algorithm-for-crossing-chronic-total-occlusions-from-the-asia-pacific-chronic-total-occlusion-club
#5
REVIEW
Scott A Harding, Eugene B Wu, Sidney Lo, Soo Teik Lim, Lei Ge, Ji-Yan Chen, Jie Quan, Seung-Whan Lee, Hsien-Li Kao, Etsuo Tsuchikane
Although the hybrid chronic total occlusion (CTO) algorithm had many excellent recommendations, there has been infrequent adoption in the Asia Pacific region. The Asia Pacific CTO club propose an algorithm for case selection based on the Japan-CTO score and a new CTO algorithm, which is applicable globally. This algorithm allows for differing skill sets and equipment availability and contains practical teaching for CTO percutaneous coronary intervention. Similar to the hybrid algorithm there are 3 main questions that determine whether the primary approach is antegrade or retrograde: 1) is there proximal cap ambiguity; 2) is the distal vessel of poor quality; and 3) are there interventional collaterals present...
November 13, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29121226/optical-frequency-domain-imaging-vs-intravascular-ultrasound-in-percutaneous-coronary-intervention-opinion-trial-one-year-angiographic-and-clinical-results
#6
Takashi Kubo, Toshiro Shinke, Takayuki Okamura, Kiyoshi Hibi, Gaku Nakazawa, Yoshihiro Morino, Junya Shite, Tetsuya Fusazaki, Hiromasa Otake, Ken Kozuma, Tetsuya Ioji, Hideaki Kaneda, Takeshi Serikawa, Toru Kataoka, Hisayuki Okada, Takashi Akasaka
Aims: Optical frequency domain imaging (OFDI) is a recently developed, light-based, high-resolution intravascular imaging technique. Intravascular ultrasound (IVUS) is a widely used, conventional imaging technique for guiding percutaneous coronary intervention (PCI). We aimed to demonstrate the non-inferiority of OFDI-guided PCI compared with IVUS-guided PCI in terms of clinical outcomes. Methods and results: We did a prospective, multicentre, randomized (ratio 1:1), active-controlled, non-inferiority study to compare head-to-head OFDI vs...
November 7, 2017: European Heart Journal
https://www.readbyqxmd.com/read/29108400/early-experience-and-favorable-clinical-outcomes-of-everolimus-eluting-bioresorbable-scaffolds-for-coronary-artery-disease-in-korea
#7
Osung Kwon, Jung-Min Ahn, Do-Yoon Kang, Se Hun Kang, Pil Hyung Lee, Soo-Jin Kang, Seung-Whan Lee, Young-Hak Kim, Cheol Whan Lee, Seong-Wook Park, Duk-Woo Park, Seung-Jung Park
Background/Aims: Compared with metallic drug-eluting stents (DES), bioresorbable vascular scaffolds (BVS) may further improve long-term outcomes of percutaneous coronary intervention (PCI) in patients with coronary artery disease. We report our early experience with BVS in Korea. Methods: We evaluated 105 consecutive patients with BVS implanted at Asan Medical Center, Korea between October 21, 2015 and June 3, 2016. Angiographic results, and in-hospital and 6-month clinical outcomes were assessed...
November 7, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/29098092/coronary-artery-hematoma-treated-with-fenestration-using-a-novel-nse-alpha%C3%A2-scoring-balloon
#8
Naohiro Funayama, Takao Konishi, Tadashi Yamamoto, Daisuke Hotta
The optimal management of coronary intramural hematoma has not been defined. We described a case in which coronary occlusion developed due to an intramural hematoma after percutaneous coronary intervention for mid left circumflex artery (LCX). Intravascular ultrasound (IVUS) demonstrated the progression of the intramural hematoma and a totally compressed true lumen. Our approach was based on fenestration with a scoring balloon (NSE Alpha, Goodman, Japan), which allowed the deployment of an additional stent to be avoided...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/29066343/intravascular-ultrasound-assessment-of-minimum-lumen-area-and-intimal-hyperplasia-in-in-stent-restenosis-after-drug-eluting-or-bare-metal-stent-implantation-the-nordic-intravascular-ultrasound-study-nivus
#9
Lisette Okkels Jensen, Saila Vikman, Lisbeth Antonsen, Petteri Kosonen, Matti Niemelä, Evald Høj Christiansen, Kari Kervinen, Andrejs Erglis, Jan Harnek, Indulis Kumsars, Leif Thuesen, Kari Niemelä
INTRODUCTION: Drug-eluting stents (DES) reduce the risk of restenosis after percutaneous coronary intervention. The aim of the study was to evaluate, by intravascular ultrasound (IVUS), the minimum lumen area site in the stented segment and the distribution of intimal hyperplasia in patients presenting with a DES or bare-metal stent (BMS) in-stent restenosis. METHODS: The "Nordic Intravascular Ultrasound Study (NIVUS)" study was conducted in Nordic and Baltic countries as a prospective multicenter registry...
May 12, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29066157/relationship-between-optical-coherence-tomography-defined-in-stent-neoatherosclerosis-and-out-stent-arterial-remodeling-assessed-by-serial-intravascular-ultrasound-examinations-in-late-and-very-late-drug-eluting-stent-failure
#10
Makoto Araki, Taishi Yonetsu, Tetsumin Lee, Tadashi Murai, Yoshihisa Kanaji, Eisuke Usui, Junji Matsuda, Masahiro Hoshino, Takayuki Niida, Masahiro Hada, Sadamitsu Ichijo, Rikuta Hamaya, Yoshinori Kanno, Mitsuaki Isobe, Tsunekazu Kakuta
BACKGROUND: Little is known regarding the association between chronological out-stent vessel remodeling and in-stent tissue characteristics of drug-eluting stent (DES) failure. We aimed to evaluate the relationship between serial vessel remodeling after DES implantation and neoatherosclerosis (NA) assessed by optical coherence tomography (OCT) in patients with DES failure. METHODS: Forty-eight patients with late and very late stent failure after DES implantation, who underwent intravascular ultrasound (IVUS) at both the initial percutaneous coronary intervention and the time of stent failure and OCT imaging at the time of stent failure, were retrospectively investigated...
October 21, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/29064537/in-stent-restenosis-prone-coronary-plaque-composition-a-retrospective-virtual-histology-intravascular-ultrasound-study
#11
Duck-Jun Seo, Yong-Kyun Kim, Young-Hoon Seo, In-Geol Song, Ki-Hong Kim, Taek-Geun Kwon, Hyun-Woong Park, Jang-Ho Bae
BACKGROUND: The mechanism of in-stent restenosis (ISR) is multifactorial, which includes biological, mechanical and technical factors. This study hypothesized that increased inflammatory reaction, which is known to be an important atherosclerotic process, at a culprit lesion may lead to higher restenosis rates. METHODS: The study population consisted of 241 patients who had undergone percutaneous coronary intervention with virtual histology-intravascular ultrasound (VH-IVUS) and a 9-month follow-up coronary angiography...
October 24, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/29060125/in-search-for-a-better-stent-surrogate-based-multi-objective-optimization-of-stent-design-under-influence-of-vessel-wall-deformation
#12
Narendra Kurnia Putra, Pramudita Satria Palar, Hitomi Anzai, Koji Shimoyama, Makoto Ohta
Stenting is known as one of the main treatment procedure for some intravascular abnormalities such as stenosis and aneurysm. In recent years, stent optimization has been conducted by several research groups in order to increase its treatment efficacy. If we can observe post-deployment behavior on the blood vessel with respect to different stent designs, this observation will be useful in the design process. Kriging surrogate model based on fluid flow simulation on a deformed vessel wall was developed in order to observe this behavior...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29045041/orbital-and-rotational-atherectomy-during-percutaneous-coronary-intervention-for-coronary-artery-calcification
#13
Michael S Lee, Jonathan S Gordin, Gregg W Stone, Samin K Sharma, Shigeru Saito, Ehtisham Mahmud, Jeff Chambers, Philippe Généreux, Richard Shlofmitz
Severe coronary artery calcification (CAC) increases the complexity of percutaneous coronary intervention (PCI) by inhibiting optimal stent expansion, leading to an increased risk of death, myocardial infarction, repeat revascularization, and stent thrombosis. Coronary atherectomy modifies and debulks calcified plaque to facilitate PCI. Although there is no clear consensus, and further studies are needed, the decision to perform atherectomy should be based upon the presence of fluoroscopic CAC or with the use of intravascular imaging...
October 17, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29044926/optical-coherence-tomography-guided-carotid-artery-stent-procedure-technique-and-potential-applications
#14
Suhail Dohad, Alexander Zhu, Sandeep Krishnan, Frances Wang, Serena Wang, Justin Cox, Timothy D Henry
OBJECTIVES: To (1) present a guide on how to perform optical coherence tomography (OCT) in carotid artery stenting (CAS), to (2) highlight several instructive cases illustrating OCT-guidance as an interventional strategy, and to (3) present the largest case-series of OCT-guided CAS performed in North America, demonstrating its feasibility as an imaging modality in this setting. BACKGROUND: OCT is an intravascular imaging method that captures images with an axial resolution 10 times higher than intravascular ultrasound...
October 16, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29038225/role-of-proximal-optimization-technique-guided-by-intravascular-ultrasound-on-stent-expansion-stent-symmetry-index-and-side-branch-hemodynamics-in-patients-with-coronary-bifurcation-lesions
#15
Diaa Hakim, Arka Chatterjee, Olusuen Alli, Joshua Turner, Assad Sattar, Nicolas Foin, Massoud A Leesar
BACKGROUND: Bench models of coronary bifurcation lesions demonstrated that the proximal optimization technique (POT) expanded the stent and opened the side branch (SB). We investigated the role of POT guided by intravascular ultrasound on the main vessel (MV) stent expansion and SB fractional flow reserve (FFR) in patients with coronary bifurcation lesion. METHODS AND RESULTS: In 40 patients with coronary bifurcation lesion, 120 intravascular ultrasound examinations of the MV were performed at baseline, after MV stenting, and POT followed by 95 FFR measurements of the SB...
October 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29033314/analysis-of-threshold-stenosis-by-multiplanar-venogram-and%C3%A2-intravascular-ultrasound-examination-for-predicting-clinical-improvement-after-iliofemoral-vein-stenting-in-the%C3%A2-vidio-trial
#16
Paul J Gagne, Antonios Gasparis, Stephen Black, Patricia Thorpe, Marc Passman, Suresh Vedantham, William Marston, Mark Iafrati
BACKGROUND: Selecting patients for iliofemoral vein stenting has traditionally relied on the identification and quantification of stenotic lesions with imaging such as multiplanar venography. Recently, intravascular ultrasound (IVUS) imaging has become more available. However, to date, the usefulness of these imaging modalities using the customary >50% treatment threshold for diameter (multiplanar venography) and area (IVUS) stenosis of iliofemoral veins has not been validated prospectively within the context of clinical improvement...
October 12, 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/29032714/fusion-of-optical-coherence-tomography-and-angiography-for-numerical-simulation-of-hemodynamics-in-bioresorbable-stented-coronary-artery-based-on-patient-specific-model
#17
Chenxi Huang, Yuanhang Zhou, Xiaoxin Mao, Jianhua Tong, Lei Zhang, Fei Chen, Yongtao Hao
Three-dimensional simulations of coronary artery using finite element analysis are considered as effective means to understand the biomechanical properties after the stent was deployed. Bioresorbable vascular scaffolds are new-generation stents used by people. Intravascular optical coherence tomography is an emerging technique for detecting struts. The common 3 D reconstruction methods are using Intravascular Ultrasound (IVUS) or angiographies. However, it loses the details about geometry model. Fusing of optical coherence tomography and angiography to reconstruct the bioresorbable stented coronary artery based on patient-specific mode is an innovative method to reconstruct the high fidelity geometry...
October 16, 2017: Computer Assisted Surgery (Abingdon, England)
https://www.readbyqxmd.com/read/29020367/clinical-outcomes-of-state-of-the-art-percutaneous-coronary-revascularization-in-patients-with-de-novo-three-vessel-disease-1-year-results-of-the-syntax-ii-study
#18
Javier Escaned, Carlos Collet, Nicola Ryan, Giovanni Luigi De Maria, Simon Walsh, Manel Sabate, Justin Davies, Maciej Lesiak, Raul Moreno, Ignacio Cruz-Gonzalez, Stephan P Hoole, Nick Ej West, J J Piek, Azfar Zaman, Farzin Fath-Ordoubadi, Rodney H Stables, Clare Appleby, Nicolas van Mieghem, Robert Jm van Geuns, Neal Uren, Javier Zueco, Pawel Buszman, Andres Iñiguez, Javier Goicolea, David Hildick-Smith, Andrzej Ochala, Dariusz Dudek, Colm Hanratty, Rafael Cavalcante, Arie Pieter Kappetein, David P Taggart, Gerrit-Anne van Es, Marie-Angèle Morel, Ton de Vries, Yoshinobu Onuma, Vasim Farooq, Patrick W Serruys, Adrian P Banning
Aims: To investigate if recent technical and procedural developments in percutaneous coronary intervention (PCI) significantly influence outcomes in appropriately selected patients with three-vessel (3VD) coronary artery disease. Methods and results: The SYNTAX II study is a multicenter, all-comers, open-label, single arm study that investigated the impact of a contemporary PCI strategy on clinical outcomes in patients with 3VD in 22 centres from four European countries...
November 7, 2017: European Heart Journal
https://www.readbyqxmd.com/read/29020287/optical-coherence-tomography-or-intravascular-ultrasound-to-optimize-coronary-stent-implantation
#19
Fernando Alfonso, Francesco Prati
No abstract text is available yet for this article.
November 7, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28991290/trombosis-primaria-de-la-descendente-anterior-en-un-paciente-con-s%C3%A3-ndrome-de-anticuerpos-antifosfol%C3%A3-pidos
#20
Jorge Acuña-Valerio, Marco Antonio Peña-Duque, Álvaro Contreras-Villaseñor
other: El síndrome de anticuerpos antifosfolípidos es una situación clínica y bioquímica heterogénea. Presentamos el caso de un varón joven con antecedente de tromboembolia venosa que se presentó en esta ocasión por dolor precordial, con elevación del ST en el electrocardiograma. Fue llevado a sala de angiografía para realizar angioplastia primaria y se observó una oclusión total ostial de la descendente anterior. Se realizó aspiración manual del trombo. No se realizó angioplastia con balón ni stent...
2017: Revista de Investigación Clínica; Organo del Hospital de Enfermedades de la Nutrición
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