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https://www.readbyqxmd.com/read/27931009/successful-mace-risk-stratification-in-hypertrophic-cardiomyopathy-patients-using-different-2d-speckle-tracking-tte-approaches
#1
Koya Ozawa, Nobusada Funabashi, Hiroyuki Takaoka, Yoshio Kobayashi
PURPOSE: We performed 2D speckle tracking transthoracic-echocardiography (TTE) to compare the ability to predict occurrence of major adverse cardiac events (MACE) between global longitudinal strain (GLS) and circumferential strain (GCS) in left ventricular (LV) myocardium in hypertrophic cardiomyopathy (HCM) patients without obstructed coronary arteries. METHODS: We measured 2D LV GLS and GCS retrospectively by TTE within 13months of performance of cardiac CT in 41 consecutive symptomatic HCM patients (27 males; 60±13years) without obstructed coronary arteries on CT...
November 14, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27930430/w1-a-novel-oral-antiplatelet-agent-with-less-resistance-than-clopidogrel
#2
Pengxin Ge, Li Du, Chunguang Han, Hui Li, Yanguo Feng, Jie Han, Zhen Wang, Liangzhong Xiong, Meiru Yuan, Yongxue Liu
Clopidogrel is a clinical antiplatelet agent, about which there are major concerns because its antiplatelet efficiency decreases with insufficient metabolic activation, leading to "clopidogrel resistance." We aimed to determine the antiplatelet effects of W1, a novel molecule composed of 2-O-clopidogrel and aspirin (1:1 ratio), on platelet aggregation ex vivo and thrombus formation in vivo, and its susceptibility to "clopidogrel resistance" in combination with other therapies in rats. Platelets were prepared, and an arteriovenous shunt thrombosis model was established using Wistar rats to measure platelet aggregation and thrombus formation, respectively...
November 24, 2016: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/27929481/how-dose-sparing-of-cardiac-structures-correlates-with-in-field-heart-volume-and-sternal-displacement
#3
Taeho Kim, Kelli Reardon, Daniel M Trifiletti, Constance Geesey, Kaitlyn Sukovich, Edwin Crandley, Paul W Read, Krishni Wijesooriya
Cardiac irradiation increases the risk of coronary artery disease in patients with left-sided breast cancer. Techniques exist to reduce cardiac irradiation, but the optimum technique depends on individual patient anatomy and physiology. We investigated the correlation of delta heart volume in field (dHVIF) and sternal excursion with dose sparing in heart and left anterior descending artery (LAD) to develop quantitative predictive models for expected dose to heart and LAD. A treatment planning study was performed on 97 left-breast cancer patients who underwent whole breast radiotherapy (prescription dose = 50 Gy) under deep inspiratory breath hold (DIBH)...
November 8, 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/27928449/severe-asymptomatic-coronary-obstruction-in-chronic-hemodialysed-patient-a-case-report
#4
Voiculeț C, Zara O, Văcăroiu I, Bogeanu C, Tiron T, Turcu F, Aron G, Ciocâlteu A
Introduction. Arterial stiffness and vascular calcifications are independent predictors of cardiovascular morbidity and mortality in the chronic kidney disease (CKD) stage 5D population. According to the guidelines, patients on renal replacement therapy represent a very high cardiovascular risk class. Case report. We report the case of a 67-year-old hypertensive male patient, known with CKD stage 5D on hemodialysis (three times per week), secondary bone mineral disease, admitted for progressive right leg pain...
October 2016: Journal of Medicine and Life
https://www.readbyqxmd.com/read/27928228/multi-phase-post-mortem-ct-angiography-a-pathologic-correlation-study-on-cardiovascular-sudden-death
#5
Emanuela Turillazzi, Paola Frati, Natascha Pascale, Cristoforo Pomara, Giampaolo Grilli, Rocco Valerio Viola, Vittorio Fineschi
Multi-phase post-mortem CT-angiography (MPMCTA) has the great potential to increase the quality of the post-mortem investigation, especially in the area of sudden death; however, its role as routine complement to the pathology toolbox is still questioned as it needs to be further standardized. The aim of this study is to investigate the contribution of MPMCTA in cases of sudden unexplained death in adults and in particular in sudden cardiovascular death. Sixty-eight sudden unexpected deaths of adults were investigated at our institution between 2012 and 2013...
October 2016: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/27928222/performance-of-dual-source-ct-with-high-pitch-spiral-mode-for-coronary-stent-patency-compared-with-invasive-coronary-angiography
#6
Xia Yang, Qiang Yu, Wei Dong, Zhen-Hong Fu, Jun-Jue Yang, Jun Guo, Yun-Dai Chen
OBJECTIVE: To investigate the performance of dual-source computed tomography (DSCT) using high-pitch spiral (HPS) mode for coronary stents patency. METHODS: We conducted a prospective study on 120 patients with 260 previous stents implanted due to recurred suspicious symptoms of angina scheduled for invasive coronary angiography (ICA), while DSCT were conducted using HPS mode. RESULTS: There was no significant impact of age, body mass index or heat rate (HR) on image quality (P > 0...
October 2016: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/27927939/have-clinicians-adopted-the-use-of-brain-mri-for-patients-with-tia-and-minor-stroke
#7
Seemant Chaturvedi, Susan Ofner, Fitsum Baye, Laura J Myers, Mike Phipps, Jason J Sico, Teresa Damush, Edward Miech, Mat Reeves, Jason Johanning, Linda S Williams, Greg Arling, Eric Cheng, Zhangsheng Yu, Dawn Bravata
BACKGROUND: Use of MRI with diffusion-weighted imaging (DWI) can identify infarcts in 30%-50% of patients with TIA. Previous guidelines have indicated that MRI-DWI is the preferred imaging modality for patients with TIA. We assessed the frequency of MRI utilization and predictors of MRI performance. METHODS: A review of TIA and minor stroke patients evaluated at Veterans Affairs hospitals was conducted with regard to medical history, use of diagnostic imaging within 2 days of presentation, and in-hospital care variables...
December 7, 2016: Neurology
https://www.readbyqxmd.com/read/27927700/cardiac-%C3%AE-v%C3%AE-3-integrin-expression-following-acute-myocardial-infarction-in-humans
#8
William S A Jenkins, Alex T Vesey, Colin Stirrat, Martin Connell, Christophe Lucatelli, Anoushka Neale, Catriona Moles, Anna Vickers, Alison Fletcher, Tania Pawade, Ian Wilson, James H F Rudd, Edwin J R van Beek, Saeed Mirsadraee, Marc R Dweck, David E Newby
OBJECTIVE: Maladaptive repair contributes towards the development of heart failure following myocardial infarction (MI). The αvβ3 integrin receptor is a key mediator and determinant of cardiac repair. We aimed to establish whether αvβ3 integrin expression determines myocardial recovery following MI. METHODS: (18)F-Fluciclatide (a novel αvβ3-selective radiotracer) positron emission tomography (PET) and CT imaging and gadolinium-enhanced MRI (CMR) were performed in 21 patients 2 weeks after ST-segment elevation MI (anterior, n=16; lateral, n=4; inferior, n=1)...
December 7, 2016: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/27924174/feasibility-study-of-computational-fluid-dynamics-simulation-of-coronary-computed-tomography-angiography-based-on-dual-source-computed-tomography
#9
Jing Lu, Jie Yu, Heshui Shi
BACKGROUND: Adding functional features to morphological features offers a new method for non-invasive assessment of myocardial perfusion. This study aimed to explore technical routes of assessing the left coronary artery pressure gradient, wall shear stress distribution and blood flow velocity distribution, combining three-dimensional coronary model which was based on high resolution dual-source computed tomography (CT) with computational fluid dynamics (CFD) simulation. METHODS: Three cases of no obvious stenosis, mild stenosis and severe stenosis in left anterior descending (LAD) were enrolled...
January 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/27920693/capecitabine-induced-coronary-vasospasm
#10
Danish Henry, Francine Rudzik, Allison Butts, Aju Mathew
Capecitabine, an oral prodrug of 5-fluorouracil (5-FU), is approved for early-stage and advanced colorectal cancer and metastatic breast cancer. Cardiotoxicity of 5-FU is well described in the literature. However, cardiac adverse effects of capecitabine are poorly described. We report a case of coronary vasospasm induced by capecitabine. A 41-year-old female with metastatic breast cancer presented with chest pain 3 days after starting capecitabine. The chest pain was relieved by rest and exacerbated by exertion...
September 2016: Case Reports in Oncology
https://www.readbyqxmd.com/read/27916431/2016-scct-str-guidelines-for-coronary-artery-calcium-scoring-of-noncontrast-noncardiac-chest-ct-scans-a-report-of-the-society-of-cardiovascular-computed-tomography-and-society-of-thoracic-radiology
#11
Harvey S Hecht, Paul Cronin, Michael J Blaha, Matthew J Budoff, Ella A Kazerooni, Jagat Narula, David Yankelevitz, Suhny Abbara
The Society of Cardiovascular Computed Tomography (SCCT) and the Society of Thoracic Radiology (STR) have jointly produced this document. Experts in this subject have been selected from both organizations to examine subject-specific data and write this guideline in partnership. A formal literature review, weighing the strength of evidence has been performed. When available, information from studies on cost was considered. Computed tomography (CT) acquisition, CAC scoring methodologies and clinical outcomes are the primary basis for the recommendations in this guideline...
November 10, 2016: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/27914496/computed-tomography-derived-skeletal-muscle-index-a-novel-predictor-of-frailty-and-hospital-length-of-stay-after-transcatheter-aortic-valve-replacement
#12
Vishal Dahya, Jingjie Xiao, Carla M Prado, Penny Burroughs, Dan McGee, Aline C Silva, Julian E Hurt, Shafi G Mohamed, Thomas Noel, Wayne Batchelor
: To determine the prevalence of low skeletal muscle mass in patients undergoing transcatheter aortic valve replacement (TAVR) and whether skeletal muscle mass measured from preoperative computed tomography (CT) images provides value in predicting postoperative length of stay (LOS). BACKGROUND: There are limited data on the use of body composition as a frailty measure in TAVR patients and no studies have determined if this measure predicts LOS. METHODS: We studied 104 consecutive patients who underwent TAVR at Tallahassee Memorial Hospital from 2012 to 2016...
December 2016: American Heart Journal
https://www.readbyqxmd.com/read/27914211/micrornas-in-cardiovascular-disease-clinical-application
#13
Christian Schulte, Mahir Karakas, Tanja Zeller
microRNAs (miRNAs) are well-known, powerful regulators of gene expression, and their potential to serve as circulating biomarkers is widely accepted. In cardiovascular disease (CVD), numerous studies have suggested miRNAs as strong circulating biomarkers with high diagnostic as well as prognostic power. In coronary artery disease (CAD) and heart failure (HF), miRNAs have been suggested as reliable biomarkers matching up to established protein-based such as cardiac troponins (cT) or natriuretic peptides. Also, in other CVD entities, miRNAs were identified as surprisingly specific biomarkers - with great potential for clinical applicability, especially in those entities that lack specific protein-based biomarkers such as atrial fibrillation (AF) and acute pulmonary embolism (APE)...
December 3, 2016: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/27913900/bone-mineral-density-of-extremities-is-associated-with-coronary-calcification-and-biopsy-verified-vascular-calcification-in-living-donor-renal-transplant-recipients
#14
Zhimin Chen, Jia Sun, Mathias Haarhaus, Peter Barany, Lars Wennberg, Jonaz Ripsweden, Torkel B Brismar, Bengt Lindholm, Annika Wernerson, Magnus Söderberg, Peter Stenvinkel, Abdul Rashid Qureshi
Chronic kidney disease (CKD) mineral and bone disorders (CKD-MBD) may lead to low bone mineral density (BMD) and vascular calcification (VC), but links to the latter are unclear. Here we investigated associations between BMD, coronary artery calcium (CAC) scores, and histological signs of VC in end-stage renal disease (ESRD) patients undergoing living-donor kidney transplantation (LD-Rtx). In 66 ESRD patients (median age 45 years, 68% males), BMD (by dual-energy X-ray absorptiometry, DXA), CAC score (by computed tomography, CT; n = 54), and degree of VC score (graded by histological examination of epigastric artery specimens collected at LD-Rtx; n = 55) were assessed at the time of LD-Rtx...
December 2, 2016: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/27909290/highly-sensitive-detection-of-minimal-cardiac-ischemia-using-positron-emission-tomography-imaging-of-activated-platelets
#15
Melanie Ziegler, Karen Alt, Brett M Paterson, Peter Kanellakis, Alex Bobik, Paul S Donnelly, Christoph E Hagemeyer, Karlheinz Peter
A reliable method for the diagnosis of minimal cardiac ischemia would meet a strong demand for the sensitive diagnosis of coronary artery disease in cardiac stress testing and risk stratification in patients with chest pain but unremarkable ECGs and biomarkers. We hypothesized that platelets accumulate early on in ischemic myocardium and a newly developed technology of non-invasive molecular PET imaging of activated platelets can thus detect minimal degrees of myocardial ischemia. To induce different degrees of minimal cardiac ischemia, the left anterior descending artery (LAD) was ligated for 10, 20 or 60 min...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27909282/-coronary-artery-revascularization-with-v-composite-saphenous-veins-graft-in-a-bad-ascending-aorta-report-of-a-case
#16
Makoto Shirakawa, Yosuke Ishii, Yasuhiro Kawase, Shunichiro Sakamoto, Yasuo Miyagi, Tetsuro Morota, Takashi Nitta
A 77-year-old male with many comorbidities underwent off pump coronary artery bypass grafting. A severely atherosclerotic ascending aorta was revealed by preoperative computed tomography(CT) and epiaortic echography during operation. Therefore, V-composite saphenous vein grafting was adopted for non left anterior descending artery (LAD) coronary lesions in addition to left internal thoracic artery-left anterior descending artery bypass grafting. He was discharged with no complications and all grafts were confirmed to be patent by postoperative CT...
December 2016: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/27908971/13n-ammonia-pet-ct-detection-of-myocardial-perfusion-abnormalities-in-beagle-dogs-after-local-heart-irradiation
#17
Jianbo Song, Rui Yan, Zhifang Wu, Jianguo Li, Min Yan, Xinzhong Hao, Jianzhong Liu, Sijin Li
: To determine the potential value of (13)N-ammonia positron emission tomography (PET)/computed tomography (CT) myocardial perfusion imaging (MPI) for detection of myocardial perfusion changes at early stage induced by radiation damage. METHODS: Thirty-six Beagle dogs were randomly divided into the control (n = 18) or the irradiation groups (n = 18). The irradiation group underwent local irradiation to the left ventricular anterior cardiac wall with a single dose of 20 Gy, whereas the control group received sham irradiation...
December 1, 2016: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/27907931/koronararterienanomalien-diagnostik-und-klassifikation-auf-basis-der-ct-und-mrt-des-herzens-von-alcapa-bis-terminationsanomaliecoronary-artery-anomalies-diagnosis-and-classification-based-on-cardiac-ct-and-mri-cmr-from-alcapa-to-anomalies-of-termination
#18
Philipp Heermann, Walter Heindel, Christoph Schülke
Background Coronary artery anomalies encompass a clinically and anatomically variable spectrum including physiological variants and pathophysiologically relevant anomalies. The majority of the variants has no hemodynamic relevance and is often detected accidentally. The recognition of the rare and relevant anomalies that cause either relevant shunt volumes leading to myocardial ischemia or ventricular tachyarrhythmias with the risk of sudden cardiac death is of major importance. Methods This review is based on a literature search in PubMed conducted using the key words "coronary artery" and/or "anomaly" and/or "anomalous origin" and/or "myocardial bridging" and/or "coronary artery fistula" and/or "Bland-White-Garland" and/or "ALCAPA"...
December 1, 2016: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/27906915/the-value-of-ct-cardiac-angiography-and-ct-calcium-score-testing-in-a-modern-cardiology-service-in-new-zealand-a-report-of-a-single-centre-eight-year-experience-from-5-237-outpatient-procedures
#19
Chris Ellis, Greg Gamble, Colin Edwards, Niels van Pelt, Ruvin Gabriel, Boris Lowe, Jonathan Christiansen, Andrew To, Helen Winch, Mark Osborne, John Ormiston, Malcolm Legget
BACKGROUND: Computed tomographic (CT) cardiac angiography is of increasing value in several areas of patient management in cardiology. We assessed the ability of CT cardiac angiography to effectively 'rule out' severe coronary stenoses in patients presenting with 'atypical' symptoms and/or an equivocal stress test, which offers a new approach to the management of coronary artery disease. We also examined the use of the CT calcium score test in cardiovascular (CVS) risk assessment. METHODS: From a large single centre (Mercy Hospital) in Auckland, using a prospectively acquired, comprehensive database, we audited the entire eight-year experience of 5,169 patients (7/8/06 to 31/1/14) who underwent 5,237 64-slice computed tomographic (CT) cardiac angiogram or CT calcium score tests (GE Lightspeed scanner)...
December 2, 2016: New Zealand Medical Journal
https://www.readbyqxmd.com/read/27906912/ct-coronary-angiography-in-2016
#20
EDITORIAL
Christopher J Occleshaw
No abstract text is available yet for this article.
December 2, 2016: New Zealand Medical Journal
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