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Intravascular ultrasound

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https://www.readbyqxmd.com/read/28938644/intravascular-ultrasound-guidance-in-drug-eluting-stents-implantation-a-meta-analysis-and-trial-sequential-analysis-of-randomized-controlled-trials
#1
Cheng Qian, Hong Feng, Jianlei Cao, Guangyu Zhang, Yanggan Wang
OBJECTIVE: Previous evidence suggested that intravascular ultrasound (IVUS) guidance could improve outcomes after drug-eluting stents (DES) placement, largely driven by data from observational studies. We, therefore, performed a meta-analysis and trial sequential analysis of randomized controlled trials to overcome this limitation. RESULTS: The retrieval process yielded 7 RCTs with 3,192 patients. Compared to the angiography guidance, IVUS-guided DES implantation was associated with a significant reduction in the major adverse cardiac events (MACE) (OR 0...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28929334/efficacy-of-biolimus-a9-eluting-stent-for-treatment-of-right-coronary-ostial-lesion-with-intravascular-ultrasound-guidance-a-multi-center-registry
#2
Kenya Nasu, Yuji Oikawa, Maoto Habara, Shinichi Shirai, Hidetoshi Abe, Makoto Kadotani, Ryo Gotoh, Hidenari Hozawa, Hiroshi Ota, Takashi Suzuki, Yoshihisa Shibata, Masaki Tanabe, Yuya Nakagawa, Takeshi Serikawa, Shiro Nagasaka, Yasuyo Takeuchi, Yoshihide Fujimoto, Hiroshi Tamura, Yuichi Kobori, Junji Yajima, Tadanori Aizawa, Takahiko Suzuki
The aim of this study was to assess the efficacy of a biolimus A9-eluting stent in patients with a right coronary artery (RCA) ostial lesion. Ostial lesions of the RCA have been a limitation of percutaneous coronary intervention even in the drug-eluting stent (DES) era. However, clinical outcomes after the deployment of a second generation DES to an RCA ostial lesion with intravascular ultrasound (IVUS) guidance have not been fully elucidated. From September 2011 to March 2013, 74 patients were enrolled in 17 centers from Japan...
September 19, 2017: Cardiovascular Intervention and Therapeutics
https://www.readbyqxmd.com/read/28928850/spiral-computed-tomography-evaluation-of-rabbit-vx2-hepatic-tumors-treated-with-20-khz-ultrasound-and-microbubbles
#3
Zhi-Yong Shen, Chun Liu, Ming-Feng Wu, Hai-Feng Shi, Yu-Feng Zhou, Wei Zhuang, Gan-Lin Xia
The aim of the present study was to explore the therapeutic effect of 20 kHz ultrasound (US) and microbubbles (MBs) on rabbit VX2 liver tumors by spiral computed tomography (CT) scanning. A total of 16 New Zealand rabbits with hepatic VX2 tumors were divided into four groups: Control, MB, low-frequency US and US + MB. The treatment effect was evaluated by spiral CT scanning prior to, during and following treatment (at 0 weeks and the end of 1 and 2 weeks). The tumor growth rate was recorded. The specimens of VX2 tumors were collected for histological examination and transmission electron microscopy (TEM)...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28923692/polymer-free-biolimus-a9-coated-stents-in-the-treatment-of-de-novo-coronary-lesions-with-short-dapt-9-month-angiographic-and-clinical-follow-up-of-the-prospective-multicenter-biofreedom-usa-clinical-trial
#4
Ron Waksman, Guy N Piegari, Ameer Kabour, Louis Cannon, John Wang, George Adams, Naresh Solankhi, Anthony Smeglin, Dean J Kereiakes, Roy Leiboff, Mia-Ashley Spad, Rebecca Torguson, Nina Chandra, Roshni Bastian, Jolanda DeGroot, Margaret W Kayo, Hans-Peter Stoll, Hector M Garcia-Garcia
BACKGROUND: BioFreedom is a polymer- and carrier-free drug-coated stent that delivers Biolimus A9 to the vessel wall. Our purpose was to evaluate the efficacy and safety of this DCS in patients with short-duration dual antiplatelet therapy. METHODS: The BioFreedom US IDE feasibility trial was a single-arm, open-label, prospective study of patients requiring stenting of de novo lesions. Patients received 3 months of DAPT, repeat angiography at 9 months, and clinical follow-up at multiple intervals...
July 31, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28923645/comparison-of-segmental-versus-longitudinal-intravascular-ultrasound-analysis-for-pediatric-cardiac-allograft-vasculopathy
#5
M A Kuhn, M Burch, R E Chinnock, M J Fenton
Intravascular ultrasound (IVUS) has been routinely used in some centers to investigate cardiac allograft vasculopathy in pediatric heart transplant recipients. We present an alternative method using more sophisticated imaging software. This study presents a comparison of this method with an established standard method. All patients who had IVUS performed in 2014 were retrospectively evaluated. The standard technique consisted of analysis of 10 operator-selected segments along the vessel. Each study was re-evaluated using a longitudinal technique, taken at every third cardiac cycle, along the entire vessel...
October 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28921914/comparison-of-relation-between-multiple-parameters-of-glycemic-variability-and-coronary-plaque-vulnerability-assessed-by-virtual-histology-intravascular-ultrasound
#6
Natsu Otowa-Suematsu, Kazuhiko Sakaguchi, Hisako Komada, Tomoaki Nakamura, Anna Sou, Yushi Hirota, Masaru Kuroda, Toshiro Shinke, Ken-Ich Hirata, Wataru Ogawa
AIMS/INTRODUCTION: Increased glycemic variability is an important contributing factor to coronary artery disease. Although various parameters of glycemic variability can be derived by continuous glucose monitoring, the clinical relevance of individual parameters has remained unclear. We have now analyzed the relation of such parameters to coronary plaque vulnerability MATERIALS AND METHODS: The standard deviation of glucose levels (SD glucose), mean amplitude of glycemic excursions (MAGE), continuous overlapping net glycemic action calculated every 1 h (CONGA-1), and mean of daily differences (MODD) were calculated from continuous glucose monitoring data for 53 subjects hospitalized for percutaneous coronary intervention...
September 16, 2017: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/28920552/clinical-correlation-of-the-area-of-inferior-vena-cava-iliac-and-femoral-veins-for-stent-use
#7
Afsha Aurshina, Arkady Ganelin, Anil Hingorani, Sheila Blumberg, Yuriy Ostrozhynskyy, Borislav Kheyson, Enrico Ascher
Objective The purpose of the study is to evaluate normal anatomical areas of infrarenal inferior vena cava, common iliac, external iliac and common femoral veins by intravascular ultrasound with the goal of assisting the development of venous-specific stents in the treatment of iliac vein stenosis. Method From February 2012 to December 2013, 656 office-based venograms were performed in our facility. Among them, 576 were stented and 80 were not. The measurements of veins were done intraoperatively using an intravascular ultrasound catheter to record areas of the inferior vena cava, proximal, middle and distal segments of common iliac vein, external iliac vein and common femoral vein...
January 1, 2017: Vascular
https://www.readbyqxmd.com/read/28918858/coronary-ct-angiography-features-of-ruptured-and-high-risk-atherosclerotic-plaques-correlation-with-intra-vascular-ultrasound
#8
Daniel R Obaid, Patrick A Calvert, Adam Brown, Deepa Gopalan, Nick E J West, James H F Rudd, Martin R Bennett
BACKGROUND: Features of ruptured and high-risk plaque have been described on coronary computed tomography angiography (coronary CTA), but not systematically assessed against intravascular ultrasound (IVUS). We examined the ability of coronary CTA to identify IVUS defined ruptured plaque and Virtual Histology Intravascular Ultrasound (VH-IVUS) defined thin-cap fibroatheroma (TCFA). METHODS: Sixty-three patients (32 with acute coronary syndrome and 31 with stable angina) underwent coronary CTA, IVUS and VH-IVUS...
September 5, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28917678/optical-frequency-domain-imaging-versus-intravascular-ultrasound-in-percutaneous-coronary-intervention-opinion-trial-results-from-the-opinion-imaging-study
#9
Hiromasa Otake, Takashi Kubo, Hachidai Takahashi, Toshiro Shinke, Takayuki Okamura, Kiyoshi Hibi, Gaku Nakazawa, Yoshihiro Morino, Junya Shite, Tetsuya Fusazaki, Ken Kozuma, Tetsuya Ioji, Hideaki Kaneda, Takashi Akasaka
OBJECTIVES: We sought to clarify how intravascular ultrasound (IVUS) and optical coherence tomography affect percutaneous coronary intervention (PCI) with current-generation drug-eluting stents in a pre-specified substudy of the OPINION (OPtical frequency domain imaging versus INtravascular ultrasound in percutaneous coronary interventiON) trial, a multicenter, prospective, randomized, noninferiority trial comparing optical frequency domain imaging (OFDI)-guided PCI with IVUS-guided PCI...
September 9, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28917517/delayed-left-main-coronary-artery-obstruction-after-radiofrequency-induced-coronary-dissection-and-spasm-insights-from-optical-frequency-domain-imaging-and-intravascular-ultrasound-imaging
#10
Umihiko Kaneko, Yoshifumi Kashima, Daitaro Kannno, Takayuki Kitai, Hiroshi Taniguchi, Kikuya Uno, Tsutomu Fujita
No abstract text is available yet for this article.
September 6, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28914752/ct-attenuation-of-pericoronary-adipose-tissue-in-normal-versus-atherosclerotic-coronary-segments-as-defined-by-intravascular-ultrasound
#11
Mohamed Marwan, Michaela Hell, Annika Schuhbäck, Sören Gauss, Daniel Bittner, Tobias Pflederer, Stephan Achenbach
BACKGROUND: The factors influencing genesis of atherosclerosis at specific regions within the coronary arterial system are currently uncertain. Local mechanical factors such as shear stress as well as metabolic factors, including inflammatory mediators released from epicardial fat, have been proposed. We analyzed computed tomographic (CT) attenuation of pericoronary adipose tissue in normal versus atherosclerotic coronary segments as defined by intravascular ultrasound (IVUS). PATIENTS AND METHODS: We evaluated the data sets of 29 patients who were referred for invasive coronary angiography and in whom IVUS of 1 coronary vessel was performed for clinical reasons...
September 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28910282/characterization-of-intravascular-cellular-activation-in-relationship-to-subclinical-atherosclerosis-in-postmenopausal-women
#12
Muthuvel Jayachandran, Vesna D Garovic, Michelle M Mielke, Kent R Bailey, Brian D Lahr, Virginia M Miller
OBJECTIVE: Mechanisms and interactions among intravascular cells contributing to development of subclinical atherosclerosis are poorly understood. In women, both menopausal status and pregnancy history influence progression of atherosclerosis. This study examined activation and interactions among blood elements with subclinical atherosclerosis in menopausal women with known pregnancy histories. METHODS: Carotid intima-media thickness (CIMT), as a marker of subclinical atherosclerosis, was measured using B-mode ultrasound in age- and parity-matched women [40 with and 40 without a history of preeclampsia] 35 years after the index pregnancy...
2017: PloS One
https://www.readbyqxmd.com/read/28895369/the-role-of-intravascular-ultrasound-in-lower-limb-revascularization-in-patients-with-peripheral-arterial-disease
#13
Gregory C Makris, Pavlina Chrysafi, Mark Little, Rafiuddin Patel, Mark Bratby, Andrew Wigham, Susan Anthony, Raman Uberoi
INTRODUCTION: The aim of this review is to explore the safety and effectiveness of intravascular ultrasound (IVUS) during lower limb endovascular interventions in patients with peripheral arterial disease (PAD). METHODS: A systematic review of the PubMed and Scopus databases was performed according to PRISMA guidelines. Clinical studies evaluating IVUS as an adjunct to angiography during revascularization procedures in patients with PAD were included. RESULTS: Thirteen studies were identified, with a total number of 2,258 patients having had IVUS for PAD intervention...
September 11, 2017: International Angiology: a Journal of the International Union of Angiology
https://www.readbyqxmd.com/read/28893795/serial-3-vessel-optical-coherence-tomography-and-intravascular-ultrasound-analysis-of-changing-morphologies-associated-with-lesion-progression-in-patients-with-stable-angina-pectoris
#14
Myong Hwa Yamamoto, Kennosuke Yamashita, Mitsuaki Matsumura, Akiko Fujino, Masaru Ishida, Seitarou Ebara, Toshitaka Okabe, Shigeo Saito, Koichi Hoshimoto, Kisaki Amemiya, Tadayuki Yakushiji, Naoei Isomura, Hiroshi Araki, Chiaki Obara, Thomas McAndrew, Masahiko Ochiai, Gary S Mintz, Akiko Maehara
BACKGROUND: Optical coherence tomographic (OCT) morphologies associated with lesion progression are not well studied. The aim of this study was to determine the morphological change for untreated lesion progression using both OCT and intravascular ultrasound (IVUS). METHODS AND RESULTS: We used baseline and 8-month follow-up 3-vessel OCT and IVUS to assess 127 nonculprit lesions (IVUS plaque burden ≥40%) in 45 patients with stable angina after target lesion treatment...
September 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28893138/a-percutaneous-repair-of-a-coronary-pseudo-aneurysm-the-role-of-the-intravascular-ultrasound
#15
Giacinto Calculli, Rocco Contuzzi, Marco Matteo Ciccone, Cataldo Loiodice, Francesca Cortese
No abstract text is available yet for this article.
September 12, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28891324/relationship-between-monocyte-to-lymphocyte-ratio-and-coronary-plaque-vulnerability-in-patients-with-stable-angina
#16
Zeyuan Fan, Hanhua Ji, Yang Li, Xinwen Jian, Li Li, Tao Liu
AIM: To investigate the relationship between monocyte-to-lymphocyte ratio (MLR) and plaque vulnerability assessed by virtual histology intravascular ultrasound in patients with stable angina. METHODS: 133 patients with stable angina were enrolled. RESULTS: MLR was found to be an independent risk factor of thin cap fibrous atheroma (OR: 2.61; p = 0.025). MLR could differentiate thin cap fibrous atheroma with a sensitivity of 73.7% and a specificity of 61...
September 11, 2017: Biomarkers in Medicine
https://www.readbyqxmd.com/read/28890787/unique-angiographic-findings-in-a-patient-with-myocardial-ischemia-and-immunoglobulin-g4-related-disease
#17
Yusuke Kanzaki, Takashi Miura, Naoto Hashizume, Tatsuya Saigusa, Soichiro Ebisawa, Koichiro Kuwahara
Immunoglobulin G4-related disease characteristically involves multiple organs including the heart and coronary arteries. Immunoglobulin G4-related coronary artery disease is thought to be due to periarteritis and histopathologically is characterized by marked thickening of the adventitia and periarterial fat with infiltration of immunoglobulin G4-positive plasma cells. Although comprehensive diagnostic criteria require a biopsy for a definite or probable diagnosis of immunoglobulin G4-related disease, obtaining a coronary artery biopsy is difficult and risky...
2017: SAGE open medical case reports
https://www.readbyqxmd.com/read/28887713/determinants-of-slow-flow-following-stent-implantation-in-intravascular-ultrasound-guided-primary-percutaneous-coronary-intervention
#18
Yusuke Watanabe, Kenichi Sakakura, Yousuke Taniguchi, Kei Yamamoto, Hiroshi Wada, Hideo Fujita, Shin-Ichi Momomura
Slow flow is a serious complication in primary percutaneous coronary intervention (PCI) and is associated with poor clinical outcomes. Intravascular ultrasound (IVUS)-guided PCI may improve clinical outcomes after drug-eluting stent implantation. The purpose of this study was to seek the factors of slow flow following stent implantation, including factors related to IVUS-guided primary PCI. The study population consisted of 339 ST-elevation myocardial infarction patients, who underwent stent deployment with IVUS...
September 8, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28881268/high-density-lipoprotein-cholesterol-associated-with-change-in-coronary-plaque-lipid-burden-assessed-by-near-infrared-spectroscopy
#19
Satoshi Honda, Samuel L Sidharta, Daisuke Shishikura, Kohei Takata, Giuseppe A Di Giovanni, Tracy Nguyen, Alex Janssan, Susan W Kim, Jordan Andrews, Peter J Psaltis, Matthew I Worthley, Stephen J Nicholls
BACKGROUND AND AIMS: Little is known about the relation between serum lipid parameters and serial change in plaque composition using in vivo coronary imaging. The aim of this study was to examine the association between serum lipids and change in coronary plaque lipid burden assessed by near-infrared spectroscopy (NIRS). METHODS: We performed serial NIRS-intravascular ultrasound studies in 49 patients who underwent coronary angiography for an acute coronary syndrome (ACS) or stable ischemic symptoms...
August 31, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28880382/reproducibility-of-point-of-care-ultrasonography-for-central-vein-diameter-measurement-separating-image-acquisition-from-interpretation
#20
Brian P Lucas, Antonietta D'Addio, Jennifer Clark, Clay Block, Harold Manning, Brian Remillard, J C Leiter
PURPOSE: Central vein point-of-care ultrasonography must be reproducible to detect intravascular volume changes. We sought to determine which measurement step, image acquisition or interpretation, could be more compromising for reproducibility. METHODS: Three investigators each acquired inferior vena cava (IVC) and internal jugular (IJV) vein ultrasonographic sequences (US) from a convenience sample of 21 hospitalized general medicine participants and then interpreted each US three separate times...
October 2017: Journal of Clinical Ultrasound: JCU
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