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Intravascular ultrasound

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
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
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 ( was used to determine SXscore before PCI, if applicable...
March 13, 2018: EuroIntervention
Timothy E Murray, Damien C O'Neill, Michael J Lee
PURPOSE: To describe a single skin puncture technique combining subcutaneous injection of anesthetic to the depth of the vessel wall with venipuncture in the same movement. TECHNIQUE: Using ultrasound guidance, controlled anesthetic instillation along the needle tract and outer vessel wall with a 21-G vascular access needle can be combined with vessel puncture. This technique reduces the number of skin punctures and ensures accurate anesthetic instillation. The maximum inadvertent intravascular dose of commercial local anesthetic preparations that can be delivered with a small syringe is far below toxicity thresholds...
March 1, 2018: Journal of Endovascular Therapy
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
Mikiya Beppu, Yohei Mineharu, Hirotoshi Imamura, Hidemitsu Adachi, Chiaki Sakai, Shoichi Tani, Koichi Arimura, So Tokunaga, Nobuyuki Sakai
BACKGROUND AND PURPOSE: Although in-stent protrusion is a potential risk factor of thromboembolism following carotid artery stenting, the correlation between in-stent protrusion and postoperative ipsilateral stroke has not been well examined. MATERIALS AND METHODS: We retrospectively reviewed 342 consecutive carotid artery lesions in 319 patients who underwent carotid artery stenting between April 2008 and April 2015. After excluding cases with carotid artery dissection and acute occlusion, 301 lesions in total of 277 patients were included in the analysis...
March 7, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
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
R A J Wain, D J Smith, D R Hammond, J P M Whitty
Arterial thrombus formation is directly related to the mechanical shear experienced by platelets within flow. High shear strain rates (SSRs) and large shear gradients cause platelet activation, aggregation and production of thrombus. This study, for the first time, investigates the influence of pulsatile flow on local haemodynamics within sutured microarterial anastomoses. We measured physiological arterial waveform velocities experimentally using Doppler ultrasound velocimetry, and a representative example was applied to a realistic sutured microarterial geometry...
March 6, 2018: Microvascular Research
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
Bart W Driesen, Evangeline G Warmerdam, Gert-Jan T Sieswerda, Paul H Schoof, Folkert J Meijboom, Felix Haas, Pieter R Stella, Adriaan O Kraaijeveld, Fabiola C M Evens, Pieter A F M Doevendans, Gregor J Krings, Arie P J van Dijk, Michiel Voskuil
OBJECTIVES: To describe the use of fractional flow reserve (FFR) and intravascular ultrasound (IVUS) in the evaluation of patients with anomalous coronary arteries originating from the opposite sinus of Valsalva (ACAOS). BACKGROUND: ACAOS of the right and left coronary are rare, but may lead to symptoms and impose a risk for sudden cardiac death, depending on several anatomical features. Assessment and risk estimation is challenging in (nonathlete) adults, especially if they present without symptoms or with atypical complaints...
March 9, 2018: Catheterization and Cardiovascular Interventions
Tadatsugu Gamou, Kenji Sakata, Hidenobu Terai, Yuki Horita, Masatoshi Ikeda, Masanobu Namura, Masakazu Yamagishi, Masa-Aki Kawashiri
OBJECTIVES: To investigate the impact of stent deformity induced by final kissing balloon technique (KBT) for coronary bifurcation lesions on in-stent restenosis (ISR). BACKGROUND: In experimental models, the detrimental effects of KBT have been clearly demonstrated, but few data exists regarding the impact of proximal stent deformity induced by KBT on clinical outcomes. METHODS: We examined 370 coronary lesions where intravascular ultrasound (IVUS)-guided second-generation drug-eluting stent (DES) implantation for coronary bifurcation lesions was performed...
March 6, 2018: Journal of Interventional Cardiology
Q-H Li, Q Zhang, X-L Li, J-F Yin, H-G Ji
OBJECTIVE: To evaluate the plaque distribution and composition pattern in the left main coronary artery (LMCA) disease using intracoronary ultrasound. PATIENTS AND METHODS: Intravascular ultrasound data of 50 patients from the January 2010 to December 2015 with significant LMCA bifurcation lesions, with angiographic diameter stenosis >50%, and requiring revascularization, were evaluated. Plaque burden and percentage of necrotic core (% NC) at the minimal lumen area site and maximal % NC site were measured in different segments...
February 2018: European Review for Medical and Pharmacological Sciences
Sarifuddin, Prashanta Kumar Mandal
Angioplasty with drug-coated balloons (DCBs) using excipients as drug carriers is emerging as a potentially viable strategy demonstrating clinical efficacy and proposing additional compliance for the treatment of obstructive vascular diseases. An attempt is made to develop an improved computational model where attention has been paid to the effect of interstitial flow, that is, plasma convection and internalization of bound drug. The present model is capable of capturing the phenomena of the transport of free drug and its retention, and also the internalization of drug in the process of endocytosis to atherosclerotic vessel of heterogeneous tissue composition comprising of healthy tissue, as well as regions of fibrous cap, fibro-fatty, calcified and necrotic core lesions...
March 5, 2018: Cardiovascular Engineering and Technology
Tomáš Kovárník, Karel Kopřiva, Jan Pudil
Authors summarize trials assessing regression of coronary atherosclerosis. Special interest is devoted to imagine techniques. Authors describe in a detail methodology and results of GLAGOV trial.Key words: coronary atherosclerosis - intravascular ultrasound - regression.
2018: Vnitr̆ní Lékar̆ství
Fabiola Atzeni, Marco Corda, Luigi Gianturco, Maurizio Porcu, Piercarlo Sarzi-Puttini, Maurizio Turiel
The risk of cardiovascular (CV) events and mortality is significantly higher in patients with systemic rheumatic diseases than in the general population. Although CV involvement in such patients is highly heterogeneous and may affect various structures of the heart, it can now be diagnosed earlier and promptly treated. Various types of assessments are employed for the evaluation of CV risk such as transthoracic or transesophageal echocardiography, magnetic resonance imaging (MRI), and computed tomography (CT) to investigate valve abnormalities, pericardial disease, and ventricular wall motion defects...
2018: Frontiers in Medicine
Samuel L Sidharta, Timothy J Baillie, Stuart Howell, Stephen J Nicholls, Natalie Montarello, Satoshi Honda, Daisuke Shishikura, Sinny Delacroix, Susan Kim, John F Beltrame, Peter J Psaltis, Stephen G Worthley, Matthew I Worthley
OBJECTIVE: Coronary vasodilator function and atherosclerotic plaque progression have both been shown to be associated with adverse cardiovascular events. However, the relationship between these factors and the lipid burden of coronary plaque remains unknown. These experiments focus on investigating the relationship between impaired coronary vasodilator function (endothelium dependent (salbutamol) and endothelium independent (glyceryl trinitrate)) and the natural history of atheroma plaque progression and lipid burden using dual modality intravascular ultrasound (IVUS) and near-infrared spectroscopy (NIRS) imaging...
March 1, 2018: Heart: Official Journal of the British Cardiac Society
Anthony N Hage, Ravi N Srinivasa, Steven D Abramowitz, Joseph J Gemmete, Shilpa N Reddy, Jeffrey Forris Beecham Chick
PURPOSE: To report global iliocaval stent reconstruction practices by interventionalists. MATERIALS AND METHODS: A 45-question survey focusing on iliocaval stent reconstruction evaluation was distributed through the Open Forum and Venous Disease Service Line of the Society of Interventional Radiology Connect website from June 20, 2017 until September 7, 2017 and the Cardiovascular and Interventional Radiological Society of Europe electronic newsletter on August 11, 2017...
February 24, 2018: Annals of Vascular Surgery
Xiyang Hu, Wei Zhang, Nairui Zhao, Rongcheng Zhao, Shuofeng Li
Coronary computed tomography angiography (CCTA) is a noninvasive test for detection and analysis of coronary plaques morphology and classification. The low- to high-density lipoprotein cholesterol (L/H) ratio is associated with plaques vulnerability. The study aims to investigate the diagnostic accuracy of CCTA and L/H ratio for plaques classification. We enrolled 212 patients with coronary artery single-vessel disease who performed preoperative CCTA and Intravascular ultrasound (IVUS)-guided invasive coronary angiography...
January 26, 2018: Oncotarget
Hunaina Shahab, Bilal Hussain, Nasir Rahman, Fateh Ali Tipoo Sultan
The ability of drug-eluting stent (DES) to inhibit intimal proliferation has resulted in a massive increase in their usage over the years. However, it is known that the application of DES can alter the normal cascade of vascular healing, resulting in delayed endothelialisation with risk of vascular complications. Coronary artery aneurysms (CAN) are defined as more than 50% dilatation of the coronary artery compared to the reference vessel diameter with the reported incidence after percutaneous intervention (PCI) being only around 0...
March 2018: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
Maria Ceja-Rodriguez, Augustus Realyvasquez, Joseph Galante, William C Pevec, Misty Humphries
OBJECTIVE: Intravascular ultrasound (IVUS) has been recommended as an adjunct to thoracic endovascular aortic repair (TEVAR) as Computed Tomography (CT) in injured patients may inaccurately determine the true aortic diameter. We hypothesize that CT and IVUS offer discordant measurements of aortic diameter in trauma patients, and that each modality may result in different graft size estimates for TEVAR. METHODS: Patients treated by TEVAR for blunt aortic injury from June 2011 to 2016 were reviewed...
February 23, 2018: Annals of Vascular Surgery
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