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Coronary artery disease

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https://www.readbyqxmd.com/read/28324943/overcoming-spatio-temporal-limitations-using-dynamically-scaled-in-vitro-pc-mri-a-flow-field-comparison-to-true-scale-computer-simulations-of-idealized-stented-and-patient-specific-left-main-bifurcations
#1
Susann Beier, John Ormiston, Mark Webster, John Cater, Stuart Norris, Pau Medrano-Gracia, Alistair Young, Kathleen Gilbert, Brett Cowan
The majority of patients with angina or heart failure have coronary artery disease. Left main bifurcations are particularly susceptible to pathological narrowing. Flow is a major factor of atheroma development, but limitations in imaging technology such as spatio-temporal resolution, signal-to-noise ratio (SNRv), and imaging artefacts prevent in vivo investigations. Computational fluid dynamics (CFD) modelling is a common numerical approach to study flow, but it requires a cautious and rigorous application for meaningful results...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324126/relationship-between-cardiac-calcification-and-left-ventricular-hypertrophy-in-patients-with-chronic-kidney-disease-at-hemodialysis-initiation
#2
Ken Kitamura, Hideki Fujii, Kentaro Nakai, Keiji Kono, Shunsuke Goto, Tatsuya Nishii, Atsushi Kono, Shinichi Nishi
Coronary artery calcification (CAC), cardiac valve calcification (CVC) and left ventricular hypertrophy (LVH) are frequently observed in chronic kidney disease (CKD) patients. These abnormalities significantly affect morbidity and mortality. The aim of this study was to investigate the relationship between CAC, CVC and LVH in CKD patients. This study included 96 patients who were hospitalized and initiated hemodialysis between December 2011 and July 2014 at our five institutions. Multi-detector computed tomography for the quantification of CAC using the Agatston score and transthoracic echocardiography for assessing CVC and LVH were performed for all patients included in the study...
March 21, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28323768/use-of-cardiovascular-age-for-assessing-risks-and-benefits-of-menopausal-hormone-therapy
#3
Richard J Santen
The Women's Health Initiative studies and others have suggested that menopausal hormone therapy may enhance the risk of new cardiovascular (CV) events in older women and diminish the development of coronary atherosclerosis in younger women. The underlying mechanisms to explain these findings are encapsulated in the term "Timing Hypothesis." Extensive pathophysiologic studies have provided mechanistic evidence for the dichotomous effects of estrogen on coronary artery vasculature. Early in the atherosclerotic disease process, estrogen exerts protective effects on the endothelium and retards plaque formation...
March 20, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28319833/aortic-calcified-particles-modulate-valvular-endothelial-and-interstitial-cells
#4
Nicole C A van Engeland, Sergio Bertazzo, Padmini Sarathchandra, Ann McCormack, Carlijn V C Bouten, Magdi H Yacoub, Adrian H Chester, Najma Latif
BACKGROUND: Normal and calcified human valve cusps, coronary arteries, and aortae harbor spherical calcium phosphate microparticles of identical composition and crystallinity, and their role remains unknown. OBJECTIVE: The objective was to examine the direct effects of isolated calcified particles on human valvular cells. METHOD AND RESULTS: Calcified particles were isolated from healthy and diseased aortae, characterized, quantitated, and applied to valvular endothelial cells (VECs) and interstitial cells (VICs)...
March 3, 2017: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/28319321/unrecognized-coronary-vasospasm-in-patients-referred-for-percutaneous-coronary-intervention-intracoronary-nitroglycerin-the-forgotten-stepchild-of-cardiovascular-guidelines
#5
Alec Vishnevsky, Howard M Julien, David L Fischman, Paul Walinsky, J David Ogilby, Nicholas J Ruggiero, Babu Jasti, Michael P Savage
OBJECTIVE: The goal of this study was to demonstrate the importance of intracoronary nitroglycerin (IC NTG) administration during diagnostic coronary angiography and prior to percutaneous coronary intervention (PCI). BACKGROUND: PCI has been a mainstay treatment for patients with symptomatic coronary artery disease. While current guidelines emphasize the importance of periprocedural antithrombotic medications, they fail to mention the use of nitroglycerin prior to PCI...
March 20, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28319162/risk-of-acute-myocardial-infarction-in-patients-with-gastroesophageal-reflux-disease-a-nationwide-population-based-study
#6
Wei-Yi Lei, Jen-Hung Wang, Shu-Hui Wen, Chih-Hsun Yi, Jui-Sheng Hung, Tso-Tsai Liu, William C Orr, Chien-Lin Chen
OBJECTIVE: Gastroesophageal reflux disease (GERD) is a common disease which can cause troublesome symptoms and affect quality of life. In addition to esophageal complications, GERD may also be a risk factor for extra-esophageal complications. Both GERD and coronary artery disease (CAD) can cause chest pain and frequently co-exist. However, the association between GERD and acute myocardial infarction (AMI) remain unclear. The purpose of the study was to compare the incidence of acute myocardial infarction in GERD patients with an age-, gender-, and comorbidity matched population free of GERD...
2017: PloS One
https://www.readbyqxmd.com/read/28319142/microrna-32-promotes-calcification-in-vascular-smooth-muscle-cells-implications-as-a-novel-marker-for-coronary-artery-calcification
#7
Jianghua Liu, Xinhua Xiao, Yingying Shen, Ling Chen, Canxin Xu, Heng Zhao, Ying Wu, Qinghai Zhang, Jing Zhong, Zhenwang Tang, Changhui Liu, Qiang Zhao, Yi Zheng, Renxian Cao, Xuyu Zu
Cardiovascular calcification is one of the most severe outcomes associated with cardiovascular disease and often results in significant morbidity and mortality. Previous reports indicated that epigenomic regulation of microRNAs (miRNAs) might play important roles in vascular smooth muscle cell (VSMC) calcification. Here, we identified potential key miRNAs involved in vascular calcification in vivo and investigated the role of miR-32-5p (miR-32). According to microarray analysis, we observed increased expression of miR-125b, miR-30a, and miR-32 and decreased expression of miR-29a, miR-210, and miR-320 during the progression of vascularcalcification...
2017: PloS One
https://www.readbyqxmd.com/read/28318875/feasibility-of-pet-for-the-management-of-coronary-artery-disease-comparison-between-cfr-and-ffr
#8
REVIEW
Osamu Manabe, Masanao Naya, Nagara Tamaki
Myocardial perfusion imaging using positron emission tomography (PET) allows both qualitative and quantitative measurement. The quantitative myocardial blood flow and coronary flow reserve (CFR) are reliable indices for evaluating functional severity, influenced by both epicardial stenosis and microvascular disease. Fractional flow reserve (FFR) also reflects physiological stenosis, which measures the pressure differences across a coronary artery stenosis during maximum hyperemia. Discordance between CFR and FFR has been noticed in estimating the functional significance of coronary stenosis...
March 16, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28318815/the-role-of-cardiac-rehabilitation-in-patients-with-heart-disease
#9
REVIEW
Sean R McMahon, Philip A Ades, Paul D Thompson
Cardiac rehabilitation is a valuable treatment for patients with a broad spectrum of cardiac disease. Current guidelines support its use in patients after acute coronary syndrome, coronary artery bypass grafting, coronary stent placement, valve surgery, and stable chronic systolic heart failure. Its use in these conditions is supported by a robust body of research demonstrating improved clinical outcomes. Despite this evidence, cardiac rehabilitation referral and attendance remains low and interventions to increase its use need to be developed...
February 15, 2017: Trends in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28318658/sudden-death-in-athletes
#10
Domenico Corrado, Alessandro Zorzi
Competitive sports activity is associated with an increased risk of sudden cardiovascular death (SCD) in adolescents and young adults with clinically silent cardiovascular disorders. While in middle-aged/senior athletes atherosclerotic coronary artery disease accounts for the vast majority of SCDs, in young athletes the spectrum of substrates is wider and includes inherited (cardiomyopathies) and congenital (anomalous origin of coronary arteries) structural heart diseases. Inherited ion channel diseases have been implicated in SCDs occurring with an apparently normal heart at autopsy...
March 10, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28318655/coronary-artery-stenoses-more-often-overestimated-in-older-patients-angiographic-stenosis-overestimation-in-elderly
#11
Nanette M Borren, Jan Paul Ottervanger, Martijn A Reinders, Elvin Kedhi
BACKGROUND: Angiographic overestimation of coronary artery stenosis severity may result in unnecessary revascularization and is possibly more prevalent with increasing age. AIM: To identify whether age is an independent clinical predictor for angiographic overestimation of a coronary artery stenosis. METHODS: Fractional flow reserve (FFR) of 335 coronary lesions was performed in 260 consecutive patients with stable coronary artery disease (CAD)...
February 28, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28318510/comparative-efficacy-of-coronary-revascularization-procedures-for-multivessel-coronary-artery-disease-in-patients-with-chronic-kidney-disease
#12
John K Roberts, Sunil V Rao, Linda K Shaw, Dianne S Gallup, Oscar C Marroquin, Uptal D Patel
Patients with chronic kidney disease (CKD) are at increased risk of cardiovascular disease and death, yet little data exist regarding the comparative efficacy of coronary revascularization procedures in CKD patients with multivessel disease. We created a cohort of 4,687 adults who underwent cardiac catheterization, had a serum creatinine value measured within 30 days, and had more than one vessel with ≥50% stenosis. We used Cox proportional hazard regression modeling weighted by the inverse probability of treatment to examine the association between 4 treatment strategies (medical management, percutaneous coronary intervention [PCI] with bare metal stent, PCI with drug-eluting stent, and coronary artery bypass grafting [CABG]) and mortality among patients across categories of estimated glomerular filtration rate; secondary outcome was a composite of mortality, myocardial infarction, or revascularization...
February 9, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28318443/cardiac-ct-imaging-for-ischemic-stroke-current-and-evolving-clinical-applications
#13
Jin Hur, Byoung Wook Choi
While the etiology of ischemic stroke is heterogeneous, approximately 20%-40% of all stroke cases result from cardiac or aortic origin. Transesophageal echocardiography (TEE) has become the reference standard modality for the detection of potential sources of cerebral embolism. Because of the advances in computed tomographic (CT) technology, cardiac CT can be used in the evaluation of potential cardioembolic sources. During the past decade, cardiac CT has been tested and compared with TEE for the diagnosis of cardioembolic sources...
April 2017: Radiology
https://www.readbyqxmd.com/read/28317490/speculative-considerations-about-some-cardiology-enigmas
#14
Paulo Roberto Barbosa Evora, Andre Schmidt, Livia Arcêncio, José Antonio Marin-Neto
Write a review text or point-of-view that takes into account the interests, if not of all, but of most readers of a scientific journal is an arduous task. The editorial can be grounded in published articles, even in a single article of undeniable importance and, it can also represent a trend of specialty. Therefore, especially for the sake of the reader's motivation, the present text was freely designed to discuss some cardiology enigmas in the context of the heart valve and coronary artery disease (CAD). Concerning the CAD five well-known enigmas will be considered: 1) The absence of arteriosclerosis in intramyocardial coronary arteries; 2) The unique and always confirmed superior evolution of the left internal thoracic artery as a coronary graft; 3) The prophylactic left internal thoracic artery graft in mildly-stenosed coronary lesions, and; 4) The high incidence of perioperative atrial fibrillation (AF) in patients with CAD, and; 5) The handling of disease-free saphenous vein graft at the time of reoperation...
March 17, 2017: Current Cardiology Reviews
https://www.readbyqxmd.com/read/28317458/use-of-the-instantaneous-wave-free-ratio-or-fractional-flow-reserve-in-pci
#15
Justin E Davies, Sayan Sen, Hakim-Moulay Dehbi, Rasha Al-Lamee, Ricardo Petraco, Sukhjinder S Nijjer, Ravinay Bhindi, Sam J Lehman, Darren Walters, James Sapontis, Luc Janssens, Christiaan J Vrints, Ahmed Khashaba, Mika Laine, Eric Van Belle, Florian Krackhardt, Waldemar Bojara, Olaf Going, Tobias Härle, Ciro Indolfi, Giampaolo Niccoli, Flavo Ribichini, Nobuhiro Tanaka, Hiroyoshi Yokoi, Hiroaki Takashima, Yuetsu Kikuta, Andrejs Erglis, Hugo Vinhas, Pedro Canas Silva, Sérgio B Baptista, Ali Alghamdi, Farrel Hellig, Bon-Kwon Koo, Chang-Wook Nam, Eun-Seok Shin, Joon-Hyung Doh, Salvatore Brugaletta, Eduardo Alegria-Barrero, Martijin Meuwissen, Jan J Piek, Niels van Royen, Murat Sezer, Carlo Di Mario, Robert T Gerber, Iqbal S Malik, Andrew S P Sharp, Suneel Talwar, Kare Tang, Habib Samady, John Altman, Arnold H Seto, Jasvindar Singh, Allen Jeremias, Hitoshi Matsuo, Rajesh K Kharbanda, Manesh R Patel, Patrick Serruys, Javier Escaned
Background Coronary revascularization guided by fractional flow reserve (FFR) is associated with better patient outcomes after the procedure than revascularization guided by angiography alone. It is unknown whether the instantaneous wave-free ratio (iFR), an alternative measure that does not require the administration of adenosine, will offer benefits similar to those of FFR. Methods We randomly assigned 2492 patients with coronary artery disease, in a 1:1 ratio, to undergo either iFR-guided or FFR-guided coronary revascularization...
March 18, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28317428/fractional-flow-reserve-guided-multivessel-angioplasty-in-myocardial-infarction
#16
Pieter C Smits, Mohamed Abdel-Wahab, Franz-Josef Neumann, Bianca M Boxma-de Klerk, Ketil Lunde, Carl E Schotborgh, Zsolt Piroth, David Horak, Adrian Wlodarczak, Paul J Ong, Rainer Hambrecht, Oskar Angerås, Gert Richardt, Elmir Omerovic
Background In patients with ST-segment elevation myocardial infarction (STEMI), the use of percutaneous coronary intervention (PCI) to restore blood flow in an infarct-related coronary artery improves outcomes. The use of PCI in non-infarct-related coronary arteries remains controversial. Methods We randomly assigned 885 patients with STEMI and multivessel disease who had undergone primary PCI of an infarct-related coronary artery in a 1:2 ratio to undergo complete revascularization of non-infarct-related coronary arteries guided by fractional flow reserve (FFR) (295 patients) or to undergo no revascularization of non-infarct-related coronary arteries (590 patients)...
March 18, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28317308/afebrile-kawasaki-disease-with-coronary-artery-dilatation
#17
Atsunori Yoshino, Risa Tanaka, Tadamasa Takano, Tsutomu Oishi
Herein we describe the cases of two afebrile patients who were thought to have Kawasaki disease (KD). Patient 1 was a 7-month-old-Japanese girl. She presented with bulbar conjunctival injection, diarrhea, skin erythema, and redness around the bacillus Calmette-Guerin (BCG) inoculation site. Thirteen days after the first symptoms, ultrasonic cardiogram (UCG) showed dilatations of the bilateral coronary arteries (CA). The dilatations had completely resolved 5 months later. Patient 2 was a 13-month-old Japanese boy...
March 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28317171/combination-of-change-in-hematological-parameters-with-exercise-stress-test-to-predict-coronary-artery-disease
#18
Ahmet Korkmaz, Abdulkadir Yıldız, Pınar Türker Duyuler, Serkan Duyuler, Samet Yılmaz, Funda Basyigit, Ozgul Ucar Elalmis, Umit Guray, Mehmet Ileri
OBJECTIVE: Treadmill exercise stress testing for identifying patients with a higher likelihood of coronary artery disease (CAD) before elective coronary angiography is recommended in the current guidelines. In this study, we aimed to evaluate the changes in the hematological parameters before and after exercise stress test in relation with the presence of CAD. METHODS: A total of 113 patients with chest pain who underwent treadmill exercise testing and coronary angiography were included in this study...
March 20, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28317163/the-value-of-diastolic-flow-reversal-in-the-descending-thoracic-aorta-as-a-determinant-of-invasively-measured-aortic-pulse-pressure
#19
Hack-Lyoung Kim, Yu Nui Kim, Hee-Jun Kim, Woo-Hyun Lim, Jae-Bin Seo, Sang-Hyun Kim, Myung-A Kim, Joo-Hee Zo
AIM: Although the diastolic flow reversal of the descending aorta has been recognized in patients with aortic regurgitation, its generation without this condition is still unknown. This study was performed to investigate whether flow patterns of the descending thoracic aorta, as measured by echocardiography, can represent invasively measured aortic pulse pressure (APP). METHODS: A total of 100 patients (age, 62.3±11.0 years; men, 62.0%) undergoing invasive coronary angiography (ICA) was analyzed...
March 19, 2017: Echocardiography
https://www.readbyqxmd.com/read/28316362/association-of-circulating-igfbp1-level-with-the-severity-of-coronary-artery-lesions-in-patients-with-unstable-angina
#20
Wei Zheng, Yayu Lai, Peng Jin, Wenzhu Gu, Qi Zhou, Xiaojing Wu
Aims. Local IGFBP1 level was reported to affect the development of coronary artery plaque. This study investigated the association of circulating IGFBP1 level with the severity of coronary artery lesions in patients with unstable angina. Materials and Methods. In 112 consecutive patients with clinically diagnosed unstable angina, admitted from July 2014 to July 2015, we studied the correlations of circulating IGFBP1 and the severity of coronary artery disease (CAD). Results. All patients underwent scheduled coronary angiography, and 67 cases were diagnosed with critical and 45 with noncritical CAD...
2017: Disease Markers
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