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https://www.readbyqxmd.com/read/28729409/comparison-of-anatomic-and-clinical-outcomes-in-patients-undergoing-alternative-initial-noninvasive-testing-strategies-for-the-diagnosis-of-stable-coronary-artery-disease
#1
Idan Roifman, Harindra C Wijeysundera, Peter C Austin, Mohammad R Rezai, Graham A Wright, Jack V Tu
BACKGROUND: The optimal initial noninvasive diagnostic testing strategy for stable coronary artery disease (CAD) is unknown. Although American guidelines recommend an exercise stress test as the first-line test, European guidelines suggest that stress imaging (myocardial perfusion imaging or stress echocardiography) or coronary computed tomography angiography may be preferable. Understanding the relationship between the initial strategy and downstream yield of obstructive CAD and major adverse cardiac events may provide insight as to the optimal strategy...
July 19, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28729378/very-early-great-saphenous-vein-graft-aneurysm-treated-by-percutaneous-coronary-intervention-under-chromaflo-imaging-guidance
#2
Tetsuo Yamaguchi, Takamichi Miyamoto, Kandoh Kawahatsu, Toshihiro Nozato
A 73-year-old man, who had undergone coronary artery bypass grafting (CABG) 10 days prior, presented with a great saphenous vein graft aneurysm (SVGA). CT revealed the increasing size of the aneurysm. Since the SVGA occurred immediately after CABG and there were no other complications, the aneurysm was treated percutaneously. While intravascular ultrasonography (IVUS) and optical coherence tomography failed to detect the entry point, an IVUS catheter with the addition of ChromaFlo imaging clearly revealed the entry point, size and length of the SVGA...
July 19, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28729298/rapid-decline-in-lung-function-is-temporally-associated-with-greater-metabolically-active-adiposity-in-a-longitudinal-study-of-healthy-adults
#3
Maan Moualla, Clifford Qualls, Alexander Arynchyn, Bharat Thyagarajan, Ravi Kalhan, Lewis J Smith, John J Carr, David R Jacobs, Akshay Sood
RATIONALE: Adiposity is associated with low lung function, but the longitudinal relationship between lung function and adiposity is inadequately studied. OBJECTIVE: To examine the bidirectional longitudinal associations between rapid decline in lung function and adiposity phenotypes in healthy adults. METHODS: This secondary analysis used a 25-year longitudinal dataset from the Coronary Artery Risk Development in Young Adults (CARDIA) study that enrolled 5115 participants...
July 20, 2017: Thorax
https://www.readbyqxmd.com/read/28728579/circulating-sortilin-level-as-a-potential-biomarker-for-coronary-atherosclerosis-and-diabetes-mellitus
#4
Tae Jung Oh, Chang Ho Ahn, Bo-Rahm Kim, Kyoung Min Kim, Jae Hoon Moon, Soo Lim, Kyong Soo Park, Cheong Lim, HakChul Jang, Sung Hee Choi
CONTEXT: A previous genome-wide association study showed that a genetic variant of sortilin was associated with the risk of coronary artery disease (CAD). However, the role of circulating sortilin is still unknown. We investigated the potential role of plasma sortilin as a biomarker for CAD and diabetes mellitus. METHODS: We enrolled statin-naïve subjects with CAD (n = 31) who underwent coronary artery bypass surgery and control subjects (n = 116) who were free from CAD as evaluated by coronary CT angiography...
July 20, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28728443/functional-assessment-of-coronary-artery-disease-by-cardiac-computed-tomography
#5
T A Treibel, A Rossi, F Pugliese, C Davies
Rapid technological advances in computed tomography (CT) have allowed CT coronary angiography (CTCA) to be delivered at low radiation dose and high diagnostic accuracy. Due to its high negative predictive value for coronary artery disease, it has become a gatekeeper for the assessment of patients with chest pain of recent onset. Second line functional assessment of a detected coronary stenosis relies mostly on other imaging modalities. Functional assessment of coronary artery disease by CT is therefore an attractive addition to CTCA...
July 21, 2017: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/28726979/chronic-disease-registries-trends-and-challenges
#6
Joachim Schüz, Michael Fored
BACKGROUND: This accompanying editorial is an introduction to the focus theme of "chronic disease registries - trends and challenges". METHODS: A call for papers was announced on the website of Methods of Information in Medicine in April 2016 with submission deadline in September 2016. A peer review process was established to select the papers for the focus theme, managed by two guest editors. RESULTS: Three papers were selected to be included in the focus theme...
July 19, 2017: Methods of Information in Medicine
https://www.readbyqxmd.com/read/28726575/bioprinting-pattern-dependent-electrical-mechanical-behavior-of-cardiac-alginate-implants-characterization-and-ex-vivo-phase-contrast-microtomography-assessment
#7
Mohammad Izadifar, Paul Babyn, Michael E Kelly, Dean Chapman, Xiongbiao Chen
Three-dimensional (3D)-bioprinting techniques may be used to modulate electrical/mechanical properties and porosity of hydrogel constructs for fabrication of suitable cardiac implants. Notably, characterization of these properties after implantation remains a challenge, raising the need for the development of novel quantitative imaging techniques for monitoring hydrogel implant behavior in-situ. This study aims to (i) assess the influence of hydrogel bioprinting patterns on electrical/mechanical behavior of cardiac implants based on a 3D-printing technique and (ii) investigate the potential of synchrotron X-ray phase contrast computed tomography (PCI-CT) for estimating elastic modulus/impedance/porosity and microstructural features of 3D-printed cardiac implants in-situ via an ex-vivo study...
July 20, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28726114/sex-related-differences-in-serum-matrix-metalloproteinase-9-screening-non-calcified-and-mixed-coronary-atherosclerotic-plaques-in-outpatients-with-chest-pain
#8
Chun Gu, Fang Wang, Zhihui Hou, Bin Lv, Yang Wang, Xiangfeng Cong, Xi Chen
The objective of this study is to evaluate the clinical feasibility of serum matrix metalloproteinase-9 (MMP-9) for screening plaque composition as assessed by coronary computed tomography angiography (CCTA) in outpatients with chest pain,and the effects of sex on this feasibility. Eight hundred and sixty-two consecutive outpatients with chest pain were divided into three groups according to the results of CCTA: non-plaque (NP, n = 474), calcified plaques (CPs, n = 179), non-calcified and mixed plaques (NCPs and MPs, n = 209)...
July 19, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28725938/declining-radiation-dose-of-coronary-computed-tomography-angiography-german-cardiac-ct-registry-experience-2009-2014
#9
Axel Schmermund, Mohamed Marwan, Jörg Hausleiter, Sebastian Barth, Oliver Bruder, Sebastian Kerber, Grigorius Korosoglou, Alexander Leber, Werner Moshage, Stephen Schröder, Steffen Schneider, Jochen Senges, Stephan Achenbach
BACKGROUND: Coronary computed tomography angiography (CTA) is increasingly used as a test to rule out coronary artery disease (CAD) in patients with a low to intermediate pre-test probability of the disease. We used the database of the German CT registry, collected between 2009 and 2014 in a broad patient population, to analyze contemporary radiation dose associated with coronary CTA in clinical practice. PATIENTS AND METHODS: The prospective observational registry included a total of 7061 patients ≥18 years, referred to 12 participating centers for a clinically indicated cardiac CT examination...
July 19, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/28723768/detection-of-incidental-cardiac-findings-in-noncardiac-chest-computed-tomography
#10
Francesco Secchi, Giovanni Di Leo, Moreno Zanardo, Marco Alì, Paola Maria Cannaò, Francesco Sardanelli
The aim of the study was to estimate the rate of incidental cardiac findings (ICF) in patients undergoing noncardiac chest CT.An experienced radiologist retrospectively reviewed 237 consecutive patients (147 males and 90 females with median age of 69 years) undergoing a noncardiac chest CT. ICF at targeted review were compared to those mentioned in original reports (χ test).At review, ≥1 ICF was detected in 124/237 patients (52%), for a total of 229 ICF, 158 of them (69%) not originally mentioned. Valvular calcifications were unmentioned in 23/23 (100%) patients, main pulmonary artery dilation in 21/22 (96%), coronary calcifications in 69/86 (80%), right or left atrial dilation in 7/11 (64%), aortic atherosclerosis in 29/62 (47%), and ascending aorta dilatation in 8/18 (44%)...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28722134/location-variations-and-predictors-of-epicardial-fat-mapping-using-multi-detector-computed-tomography-to-assist-epicardial-ventricular-tachycardia-ablation
#11
Mariaileen Sourwine, Jean Jeudy, Brian Miller, Rama Vunnam, Hasan Imanli, Olurotimi Mesubi, Martine Etienne-Mesubi, Vincent See, Stephen Shorofsky, Timm Dickfeld
BACKGROUND: A significant number of ventricular tachycardia circuits are located close to the epicardial surface and are amendable to epicardial ablation. Epicardial fat often interferes with substrate mapping and ablation, though little is known regarding the distribution of fat and its fluctuation with the cardiac cycle. METHODS: We studied 40 patients who underwent a 64-slice MDCT in order to describe patterns of epicardial fat distribution, variation during cardiac cycle and clinical predictors of epicardial fat...
July 19, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28719492/fifty-men-3510-marathons-cardiac-risk-factors-and-coronary-artery-calcium-scores
#12
William O Roberts, Robert S Schwartz, Ross F Garberich, Samantha Carlson, Thomas Knickelbine, Jonathan G Schwartz, Gretchen Peichel, John R Lesser, Kelly Wickstrom, Kevin M Harris
INTRODUCTION/PURPOSE: Many male marathon runners have elevated coronary artery calcium (CAC) scores despite high physical activity. We examined the association between CAC scores, cardiovascular risk factors, and lifestyle habits in long term marathoners. METHODS: We recruited men who had run ≥1 marathon annually for 25 consecutive years. CAC was assessed using coronary computed tomography angiography. Atherosclerotic cardiovascular disease (CAD) risk factors were measured with a 12-lead ECG, serum lipid panel, height, weight, resting blood pressure and heart rate, and a risk factor questionnaire...
July 17, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28714526/different-postconditioning-cycles-affect-prognosis-of-aged-patients-undergoing-primary-percutaneous-coronary-intervention
#13
Jie Zhang, Xin Zhang, Yuqi Cui, Misbahul Ferdous, Lianqun Cui, Peng Zhao
BACKGROUND: Postconditioning can affect the infarct size in acute myocardial infarction (AMI). However, few studies show an effect of different postconditioning cycles on AMI aged patients. This study sought to assess the effect of different postconditioning cycles on prognosis in aged patients with AMI who underwent primary percutaneous coronary intervention (PCI). METHODS: 74 aged patients were randomly assigned to three groups. Control group; PC-1 group accepted postconditioning 4 cycles of 30 s inflation and 30 s deflation; PC-2 group accepted postconditioning 4 cycles of 60 s...
July 17, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/28712701/impact-of-advanced-modeled-iterative-reconstruction-on-interreader-agreement-in-coronary-artery-measurements
#14
Tobias Gassenmaier, Isabel Distelmaier, Andreas M Weng, Thorsten A Bley, Thorsten Klink
OBJECTIVES: To evaluate the influence of advanced modeled iterative reconstruction (ADMIRE) on coronary artery computed tomography angiography (cCTA) measurements in comparison to filtered back projection (FBP). MATERIAL AND METHODS: Phantom scans and coronary CTA studies of 27 patients were acquired with a third generation dual-source CT scanner. Images were reconstructed using FBP and ADMIRE. Phantom measurements were used as reference standard. In patient studies, representative axial slices of each coronary artery segment without (n=308) and with coronary plaques (n=40) were assessed in identical positions for comparison of FBP and ADMIRE reconstructions...
July 1, 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28710871/detection-and-quantification-of-coronary-calcium-from-dual-energy-chest-x-rays-phantom-feasibility-study
#15
Bo Zhou, Di Wen, Katelyn Nye, Robert C Gilkeson, Brendan Eck, David Jordan, David L Wilson
PURPOSE: We have demonstrated the ability to identify coronary calcium, a reliable biomarker of coronary artery disease, using non-gated, 2-shot, dual energy (DE) chest x-ray imaging. Here we will use digital simulations, backed up by measurements, to characterize DE calcium signals and the role of potential confounds such as beam hardening, x-ray scatter, cardiac motion, and pulmonary artery pulsation. For the DE calcium signal, we will consider quantification, as compared to CT calcium score, and visualization...
July 15, 2017: Medical Physics
https://www.readbyqxmd.com/read/28708755/computed-tomography-coronary-angiography-with-heart-rate-control-premedication-a-best-practice-implementation-project
#16
Gordon Thomas Waterland Mander
BACKGROUND: Computed tomography coronary angiography patient preparation with heart rate control premedication is employed in departments across Australia. However, the methods of administration vary widely between institutions and do not always follow best practice. OBJECTIVES: This aim of the study was to identify and promote best practice in the administration of heart rate premedication in computed tomography coronary angiography at a regional hospital in Australia...
July 2017: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/28708724/impact-of-ssf-on-diagnostic-performance-of-coronary-computed-tomography-angiography-within-1-heart-beat-in-patients-with-high-heart-rate-using-a-256-row-detector-computed-tomography
#17
Junfu Liang, Hui Wang, Lei Xu, Li Dong, Zhanming Fan, Rui Wang, Zhonghua Sun
OBJECTIVE: The aim of this study was to investigate the impact of a motion-correction algorithm on diagnostic accuracy of coronary computed tomography angiography (CCTA) within 1 heart beat in patients with high heart rate (HR) using a 256-row detector CT. METHOD: Sixty-four consecutive patients with known or suspected coronary artery disease (symptomatic) and with HR of 75 beats per minute or greater (mean [SD] HR, 82.6 [7.3] beats per minute) undergoing CCTA and invasive coronary angiography within 4 weeks were prospectively enrolled...
July 13, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28708716/the-influence-of-contrast-agent-s-osmolarity-on-iodine-delivery-protocol-in-coronary-computed-tomography-angiography-comparison-between-iso-osmolar-iodixanol-320-and-low-osmolar-iomeprol-370
#18
Xiaohan Yang, Weiwei Huang, Wangyan Liu, Yinsu Zhu, Yi Xu, Guanyu Yang, Lijun Tang, Xiaomei Zhu
OBJECTIVES: This study aims to assess whether iodine-contained contrast agents with different osmolarity affect iodine delivery protocol during coronary computed tomography angiography (CCTA). METHODS: Patients who underwent CCTA were randomized to receive contrast media either iodixanol-320 (iso-osmolar group) or iopromide-370 (low-osmolar group). Contrast protocols were recorded. Tube voltage of 100 kV was chosen for patients with body mass index of less than or equal to 25 (n = 224) and tube voltage of 120 kV for patients with body mass index of greater than 25 (n = 165)...
July 13, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28707262/exercise-n-13-cardiac-positron-emission-tomography-myocardial-perfusion-imaging-detecting-ischemia-in-an-adult-patient-with-anomalous-aortic-origin-of-the-left-main-coronary-artery-from-the-right-coronary-sinus
#19
Matthew R Summers, Hani Najm, James L Gentry Iii, Wael A Jaber
Anomalous aortic origin of a coronary artery is a rare congenital condition that has variable presentations from atypical chest pain to syncope and cardiac arrest. Commonly used myocardial perfusion imaging techniques, stress agents, and perfusion agents may have limited ability to detect inducible ischemia in this rare patient group. We herein describe a unique case of anomalous left main coronary artery from a common right coronary sinus ostium with a subpulmonic and intramyocardial course. This patient had multiple atypical chest pain presentations and multiple-negative pharmacologic single-photon emission-computed tomography stress tests performed...
July 13, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28705554/atrial-function-atrial-volume-and-cardiovascular-clinical-outcomes-in-patients-with-end-stage-renal-disease-a-study-of-cardiac-computed-tomography
#20
Laust Dupont, Simon Winther, Hanne Skou Jørgensen, Peter Bomholt, Hans Erik Bøtker, Morten Bøttcher, Per Ivarsen, My Svensson
BACKGROUND: Patients with chronic kidney disease (CKD) have an increased risk of cardiovascular events. Previous studies using 2-dimensional echocardiography show that left atrial end-diastolic volume (LAEDV) predicts cardiovascular outcomes and mortality in patients with CKD. However, contrast-enhanced cardiac CT may offers a more precise measure of atrial dimensions and function than 2-dimensional echocardiography and may provide improved predictionof patient outcome. AIM: The aim of the present study was to examine the association of LAEDV and left atrial ejection fraction (LAEF) assessed by CT with left ventricle end-diastolic volume (LVEDV), left ventricular mass, left ventricular ejection fraction and N-terminal plasma-pro-brain natriuretic peptide (NT-PRO-BNP)...
July 4, 2017: Journal of Cardiovascular Computed Tomography
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