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https://www.readbyqxmd.com/read/29679449/value-of-intravascular-ultrasound-in-guiding-coronary-interventions
#1
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
#2
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
#3
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/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
#4
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/29643815/mechanical-characterization-of-the-vessel-wall-by-data-assimilation-of-intravascular-ultrasound-studies
#5
Gonzalo D Maso Talou, Pablo J Blanco, Gonzalo D Ares, Cristiano Guedes Bezerra, Pedro A Lemos, Raúl A Feijóo
Atherosclerotic plaque rupture and erosion are the most important mechanisms underlying the sudden plaque growth, responsible for acute coronary syndromes and even fatal cardiac events. Advances in the understanding of the culprit plaque structure and composition are already reported in the literature, however, there is still much work to be done toward in-vivo plaque visualization and mechanical characterization to assess plaque stability, patient risk, diagnosis and treatment prognosis. In this work, a methodology for the mechanical characterization of the vessel wall plaque and tissues is proposed based on the combination of intravascular ultrasound (IVUS) imaging processing, data assimilation and continuum mechanics models within a high performance computing (HPC) environment...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29623170/a-practical-approach-to-assessing-stent-results-with-ivus-or-oct
#6
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
#7
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
https://www.readbyqxmd.com/read/29622991/tissue-characterization-of-non-culprit-intermediate-coronary-lesions-in-non-st-elevation-acute-coronary-syndromes
#8
Helmy Hassan Elghawaby, Mohamed Ashraf Shawky, Ahmed Hossam Mowafi, Akram Mohamed Abd-Elbary, Farouk Mostafa Faris
Background: Disruption of vulnerable plaques is the most common cause of acute coronary syndromes. Intravascular ultrasound facilitates cross-sectional imaging of coronary arteries. We aimed at using IVUS to investigate the morphology and tissue characteristics of atherosclerotic plaques of non-culprit intermediate coronary lesions in non-ST elevation ACS setting. Methods: IVUS assessment of sixty-one intermediate coronary lesions in twenty-eight patients with the diagnosis of Non ST elevation acute coronary syndromes...
March 2018: The Egyptian heart journal: (EHJ): official bulletin of the Egyptian Society of Cardiology
https://www.readbyqxmd.com/read/29622511/a-novel-technique-to-create-an-arteriovenous-fistula-during-total-percutaneous-deep-foot-venous-arterialisation-using-an-ivus-guided-catheter
#9
Bruno Migliara, Tania F Cappellari
No abstract text is available yet for this article.
April 2, 2018: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29622143/bioresorbable-scaffold-for-treatment-of-coronary-artery-lesions-intravascular-ultrasound-results-from-the-absorb-japan-trial
#10
Kozo Okada, Yasuhiro Honda, Hideki Kitahara, Kyuhachi Otagiri, Shigemitsu Tanaka, M Brooke Hollak, Paul G Yock, Jeffrey J Popma, Hajime Kusano, Wai-Fung Cheong, Krishnankutty Sudhir, Peter J Fitzgerald, Takeshi Kimura
OBJECTIVES: The aim of this study was to characterize post-procedural intravascular ultrasound (IVUS) findings in the ABSORB Japan trial, specifically stratified by the size of target coronary arteries. BACKGROUND: Despite overall noninferiority confirmed in recent randomized trials comparing bioresorbable vascular scaffolds (BVS) (Absorb BVS) and cobalt-chromium everolimus-eluting metallic stents (CoCr-EES), higher event rates of Absorb BVS have been reported with suboptimal deployment, especially in small coronary arteries...
April 9, 2018: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29610445/dissections-in-peripheral-vascular-interventions-a-proposed-classification-using-intravascular-ultrasound
#11
Nicolas W Shammas, James T Torey, W John Shammas
Dissections following interventions in the infrainguinal arteries occur very frequently and are mostly under-appreciated on angiographic imaging. Media and external elastic lamina injury can contribute to loss of patency, and intravascular ultrasound (IVUS) can identify this type of injury. The circumference of injury also has been proposed to be a predictor of outcome. We therefore propose a classification combining depth of injury from intima to adventitia with circumference of dissection. This classification exhibits six dissection grades (A1, A2, B1, B2, C1, and C2) as seen on IVUS (the "iDissection" classification)...
April 2018: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/29606415/effect-of-alirocumab-on-coronary-atheroma-volume-in-japanese-patients-with-acute-coronary-syndromes-and-hypercholesterolemia-not-adequately-controlled-with-statins-odyssey-j-ivus-rationale-and-design
#12
Junya Ako, Kiyoshi Hibi, Ken Kozuma, Katsumi Miyauchi, Yoshihiro Morino, Toshiro Shinke, Kenichi Tsujita, Kiyoko Uno, Yumiko Kawabata, Takafumi Hiro
BACKGROUND: Serial intravascular ultrasound (IVUS) imaging can be used to evaluate the effect of cholesterol-lowering on coronary atheroma progression and plaque volume, with evidence of potential incremental effects with more aggressive lipid-lowering treatments. Alirocumab is a highly specific, fully human monoclonal antibody to proprotein convertase subtilisin/kexin type 9 (PCSK9). This study will investigate the effect of alirocumab on coronary artery plaque volume in Japanese patients with a recent acute coronary syndrome (ACS) and hypercholesterolemia while on stable statin therapy...
March 29, 2018: Journal of Cardiology
https://www.readbyqxmd.com/read/29598865/pet-assessment-of-epicardial-intimal-disease-and-microvascular-dysfunction-in-cardiac-allograft-vasculopathy
#13
Sharon Chih, Aun Yeong Chong, Fernanda Erthal, Robert A deKemp, Ross A Davies, Ellamae Stadnick, Derek Y So, Christopher Overgaard, George Wells, Lisa M Mielniczuk, Rob S B Beanlands
BACKGROUND: Cardiac allograft vasculopathy (CAV) is a leading cause of graft failure and death after heart transplantation. Absolute myocardial blood flow (MBF) quantification using rubidium 82 (Rb-82) positron emission tomography (PET) could enable evaluation of diagnostically challenging diffuse epicardial and microvascular disease in CAV. OBJECTIVES: The authors aimed to evaluate Rb-82 PET detection of CAV. METHODS: Consecutive transplant recipients undergoing coronary angiography were prospectively evaluated with PET, multivessel intravascular ultrasound (IVUS), and intracoronary hemodynamics...
April 3, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29564353/pseudo-normalization-of-a-coronary-artery-aneurysm-detected-by-ivus
#14
Sherif Rizk, Waseem Amin, Hala Hamza, Karim Said, Galal El Said
No abstract text is available yet for this article.
October 31, 2017: Global Cardiology Science & Practice
https://www.readbyqxmd.com/read/29540631/current-use-of-intracoronary-imaging-in-interventional-practice-results-of-a-european-association-of-percutaneous-cardiovascular-interventions-eapci-and-japanese-association-of-cardiovascular-interventions-and-therapeutics-cvit-clinical-practice-survey
#15
Konstantinos C Koskinas, Masato Nakamura, Lorenz Räber, Roisin Colleran, Kazushige Kadota, Davide Capodanno, William Wijns, Takashi Akasaka, Marco Valgimigli, Giulio Guagliumi, Stephan Windecker, Robert A Byrne
BACKGROUND: This study evaluated the views of the cardiology community on the clinical use of coronary intravascular imaging (IVI).Methods and Results:A web-based survey was distributed to 31,893 individuals, with 1,105 responses received (3.5% response rate); 1,010 of 1,097 respondents (92.1%) self-reported as interventional cardiologists, 754 (68.7%) with >10 years experience. Overall, 96.1% had personal experience with IVI (95.5% with intravascular ultrasound [IVUS], 69.8% with optical coherence tomography [OCT], and 7...
March 15, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29537966/current-use-of-intracoronary-imaging-in-interventional-practice-results-of-a-european-association-of-percutaneous-cardiovascular-interventions-eapci-and-japanese-association-of-cardiovascular-interventions-and-therapeutics-cvit-clinical-practice-survey
#16
Konstantinos C Koskinas, Masato Nakamura, Lorenz Räber, Roisin Colleran, Kazushige Kadota, Davide Capodanno, William Wijns, Takashi Akasaka, Marco Valgimigli, Giulio Guagliumi, Stephan Windecker, Robert A Byrne
AIMS: This study evaluated the views of the cardiology community on the clinical use of coronary intravascular imaging (IVI). METHODS AND RESULTS: A web-based survey was distributed to 31,893 individuals, with 1,105 responses received (3.5% response rate); 1,010 of 1,097 respondents (92.1%) self-reported as interventional cardiologists, 754 (68.7%) with >10 years experience. Overall, 96.1% had personal experience with IVI (95.5% with intravascular ultrasound [IVUS], 69...
March 15, 2018: EuroIntervention
https://www.readbyqxmd.com/read/29537372/syntax-score-in-relation-to-intravascular-ultrasound-and-near-infrared-spectroscopy-for-the-assessment-of-atherosclerotic-burden-in-patients-with-coronary-artery-disease
#17
Maxime M Vroegindewey, Anne-Sophie Schuurman, Isabella Kardys, Sharda S Anroedh, Rohit M Oemrawsingh, Jurgen Ligthart, Hector M Garcia-Garcia, Robert-Jan M van Geuns, Evelyn Regar, Nicolas M Van Mieghem, Patrick W Serruys, Eric Boersma, Martijn Akkerhuis
AIMS: To examine the relationship between the anatomical SYNTAX score (SXscore), derived from all three coronary arteries, and coronary wall pathology measured by radiofrequency-intravascular ultrasound (RF-IVUS) and near-infrared spectroscopy (NIRS) in a single non-culprit segment. METHODS AND RESULTS: In referred for coronary angiography (N=88) or PCI (N=592) for stable angina or acute coronary syndrome, the SYNTAX score calculator (www.syntaxscore.com) was used to determine SXscore before PCI, if applicable...
March 13, 2018: EuroIntervention
https://www.readbyqxmd.com/read/29526687/correlation-between-venous-pressure-gradients-and-intravascular-ultrasound-in-the-diagnosis-of-iliac-vein-compression-syndrome
#18
Bruno Lorenção de Almeida, Fabio Henrique Rossi, Amanda Guerra de Moraes Rego Sousa, Antonio Massamitsu Kambara, Nilo Mitsuru Izukawa, Camila Baumann Beteli, Sthefanie Fauve Andrade Cavalcante, Thiago Osawa Rodrigues, Patricia E Thorpe
OBJECTIVE: The objective of this study was to evaluate the correlation between venous pressure gradients (VPGs) and intravascular ultrasound (IVUS) for the diagnosis of caval-iliac venous obstructions in patients with advanced chronic venous insufficiency. METHODS: Fifty patients with advanced chronic venous insufficiency symptoms (Clinical, Etiology, Anatomy, and Pathophysiology class 3 to 6) were prospectively submitted to multiplanar venography (MV) with intravenous pressure measurements and IVUS...
March 8, 2018: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/29523165/alloxan-induced-diabetes-exacerbates-coronary-atherosclerosis-and-calcification-in-ossabaw-miniature-swine-with-metabolic-syndrome
#19
Jill K Badin, Ayeeshik Kole, Benjamin Stivers, Victor Progar, Anisha Pareddy, Mouhamad Alloosh, Michael Sturek
BACKGROUND: There is a preponderance of evidence implicating diabetes with increased coronary artery disease (CAD) and calcification (CAC) in human patients with metabolic syndrome (MetS), but the effect of diabetes on CAD severity in animal models remains controversial. We investigated whether diabetes exacerbates CAD/CAC and intracellular free calcium ([Ca2+ ]i ) dysregulation in the clinically relevant Ossabaw miniature swine model of MetS. METHODS: Sixteen swine, eight with alloxan-induced diabetes, were fed a hypercaloric, atherogenic diet for 6 months...
March 9, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29521477/serial-intravascular-ultrasound-evaluation-of-the-desolve%C3%A2-novolimus-eluting-bioresorbable-coronary-scaffold-system
#20
Gentil Barreira, J Ribamar Costa, Ricardo Costa, Rodolfo Staico, Daniel Chamie, Juliano R Slhessarenko, Luiz Fernando Tanajura, Andrea Abizaid, Amanda Sousa, Alexandre Abizaid
INTRODUCTION: Bioresorbable coronary scaffolds (BRS) have been developed to increase the late safety of coronary angioplasty by providing transitory coronary support and then being fully incorporated to the vessel wall. In the present trial, we sought to evaluate the performance and changes over time in the DESolve™ novolimus-eluting BRS using serial intravascular ultrasound (IVUS) in patients submitted to percutaneous coronary interventions. METHODS: Single-center, prospective, non-randomized study involving 17 consecutive patients submitted to implantation of the DESolve™ scaffold and serial evaluated with IVUS at different time points (post procedure, 6 and 18 months)...
March 9, 2018: Catheterization and Cardiovascular Interventions
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