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Cardiac computed tomography angiography

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https://www.readbyqxmd.com/read/29050736/-complicated-transcatheter-aortic-valve-endocarditis-with-abscess-and-pseudoaneurysm-value-of-the-ecg-gated-multidetector-computed-tomography-angiography
#1
S Pichard, G Gibault-Genty, A Vienet-Legue, N Baron, R Convers-Domart, J L Georges, B Livarek
A 80-year-old man was admitted to catheterization room for an acute infero-lateral ST-elevation myocardial infarction (STEMI). Coronary angiography showed a thrombotic occlusion of the second left marginal branch, and normal other coronary arteries. The thrombo-embolic mechanism of the STEMI, and the infectious context in this patient who had had a transcatheter aortic valve implantation (TAVI) two months earlier, led us to suspect a bioprosthesis endocarditis. It was confirmed by transthoracic and transoesophageal echocardiography, which showed an aortic-mitral curtain abscess and aortic bioprosthesis vegetations, associated to Enterococcus faecalis bacteriemia...
October 16, 2017: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/29049525/impact-of-the-haga-braincare-strategy-on-the-burden-of-haemodynamic-and-embolic-strokes-related-to-cardiac-surgery
#2
Friso Duynstee, Ruud W M Keunen, Agnes van Sonderen, Ali M Keyhan-Falsafi, Gerard J F Hoohenkerk, Gayleen Stephens, Erik Teeuws, Jan W K van Alphen, Dénes L J Tavy, Arne Mosch, Sebastiaan F T M de Bruijn, Hans van Overhagen, Frank E E Treurniet, Lucas C van Dijk, Paulien M van Kampen
OBJECTIVES: This study prospectively evaluates the impact of the Haga Braincare Strategy (HBS) on the occurrence of haemodynamic and embolic stroke in a cohort of patients who underwent coronay artery bypass grafting (CABG), valve replacement of a combination of both types of surgery between 2012 and 2015 at the Haga Teaching Hospitals. METHODS: The HBS is a dual strategy based on a preoperative vascular work-up of the cerebral circulation by transcranial Doppler and a perioperative monitoring of the cerebral circulation by cerebral oximetry...
June 15, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29038153/prospective-validation-of-a-biomarker-based-rule-out-strategy-for-functionally-relevant-coronary-artery-disease
#3
Joan E Walter, Ursina Honegger, Christian Puelacher, Deborah Mueller, Max Wagener, Nicolas Schaerli, Ivo Strebel, Raphael Twerenbold, Jasper Boeddinghaus, Thomas Nestelberger, Lorraine Sazgary, Stella Marbot, Jeanne du Fay de Lavallaz, Christoph Kaiser, Stefan Osswald, Damian Wild, Katharina Rentsch, Michael Zellweger, Tobias Reichlin, Christian Mueller
BACKGROUND: This study aimed to prospectively advance a rule-out strategy for functionally significant coronary artery disease (CAD) by use of high-sensitivity cardiac troponin I (hs-cTnI) from bench to bedside, by application of a 3-step approach: validation in serum, correlation in plasma, and application on a clinical platform. METHODS: Patients without known CAD referred for rest/stress myocardial perfusion single-photon emission tomography/computer tomography (MPI-SPECT/CT) were assigned to 3 consecutive cohorts: validation, correlation, and application...
October 16, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28993037/reversible-stress-cardiomyopathy-secondary-to-aneurysmal-subarachnoid-hemorrhage-a-case-report
#4
Konstantinos Lampropoulos, Evangelos Giannoulis, Bazoukis George, Gary Tse, Epameinondas Triantafyllou, Athanasios Triantafyllou
BACKGROUND: Acute cerebral incidents have been correlated with cardiac manifestations. Specifically, subarachnoid hemorrhage has been correlated with a syndrome described as neurogenic stress cardiomyopathy and mimics acute coronary syndrome. CASE REPORT: A 55-year-old woman presented at the Emergency Department of our hospital complaining of vomiting and headache of sudden onset. Computed tomography angiography revealed a ruptured aneurysm at the tip of the basilar artery and the patient underwent a successful complete embolism of the sac of the aneurysm...
October 6, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28988831/calcification-remodeling-index-assessed-by-cardiac-ct-predicts-severe-coronary-stenosis-in-lesions-with-moderate-to-severe-calcification
#5
Mengmeng Yu, Yuehua Li, Wenbin Li, Zhigang Lu, Meng Wei, Jiayin Zhang
OBJECTIVES: To assess the diagnostic performance of the calcification remodeling index (RI) as assessed by coronary computed tomography angiography (coronary CTA) to predict the presence of severe coronary stenosis in atherosclerotic coronary lesions with moderate to severe calcification. METHODS: Patients who underwent coronary CTA and invasive coronary angiography (ICA) within one month and had moderately to severely calcified lesions as revealed by coronary CTA, were retrospectively included...
September 30, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28984636/coronary-artery-positive-remodeling-in-current-smokers
#6
Anas Alani, Yanting Luo, Rine Nakanishim, Suguru Matsumoto, Matthew J Budoff
BACKGROUND: This study aims to evaluate the association of the coronary artery-positive remodeling (CAPR) observed on cardiac computed tomography angiography (CCTA) with cigarette smoking. PATIENTS AND METHODS: This retrospective case-control study enrolled 178 consecutive patients with CAPR plaque (case group) and 180 consecutive patients with coronary artery plaque, but no positive remodeling (control group). CAPR was evaluated in CCTA images and defined as at least 10% larger vessel diameter at the plaque site compared with a normal reference segment...
October 3, 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/28981808/evaluation-of-radiation-absorbed-dose-and-image-quality-in-different-retrospective-ecg-gating-acquisition-methods-of-cardiac-ct-angiography
#7
Shojaei Barjouei Nazli, Seyed Mahmoud Reza Aghamiri, Neda Gholizadeh Sendani, Amin Shams Akhtari
Cardiac computed tomography angiography (CCTA) studies have risen concern of radiobiological effects over the patients. Therefore, estimating radiation doses absorbed during CCTA is important. In this study, we compared radiation dose and image quality by using three different retrospective electrocardiography (ECG) protocols. A total of 123 patients undergoing CCTA were divided in three different groups. We used full-dose modulation (CareDose4D) technique in group (1); fixed tube current 200 mAs for group (2); and in group (3), chest circumference was used to adapt tube current (180-200 mAs) and tube potential (100-120 kVp)...
August 22, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/28977374/incremental-prognostic-value-of-coronary-computed-tomography-angiography-over-coronary-calcium-scoring-for-major-adverse-cardiac-events-in-elderly-asymptomatic-individuals
#8
Donghee Han, Bríain Ó Hartaigh, Heidi Gransar, Ji Hyun Lee, Asim Rizvi, Lohendran Baskaran, Joshua Schulman-Marcus, Allison Dunning, Stephan Achenbach, Mouaz H Al-Mallah, Daniel S Berman, Matthew J Budoff, Filippo Cademartiri, Erica Maffei, Tracy Q Callister, Kavitha Chinnaiyan, Benjamin J W Chow, Augustin DeLago, Martin Hadamitzky, Joerg Hausleiter, Philipp A Kaufmann, Gilbert Raff, Leslee J Shaw, Todd C Villines, Yong-Jin Kim, Jonathon Leipsic, Gudrun Feuchtner, Ricardo C Cury, Gianluca Pontone, Daniele Andreini, Hugo Marques, Ronen Rubinshtein, Niree Hindoyan, Erica C Jones, Millie Gomez, Fay Y Lin, Hyuk-Jae Chang, James K Min
Aims: Coronary computed tomography angiography (CCTA) and coronary artery calcium score (CACS) have prognostic value for coronary artery disease (CAD) events beyond traditional risk assessment. Age is a risk factor with very high weight and little is known regarding the incremental value of CCTA over CAC for predicting cardiac events in older adults. Methods and results: Of 27 125 individuals undergoing CCTA, a total of 3145 asymptomatic adults were identified...
July 20, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28975887/quality-assurance-of-the-western-denmark-heart-registry-a-population-based-healthcare-register
#9
Linda Aagaard Rasmussen, Hans Erik Bøtker, Lisette Okkels Jensen, Jan Ravkilde, Lars Riber, Per Hostrup Nielsen, Jan Jesper Andreasen, Carl-Johan Jakobsen
INTRODUCTION: During the past decade, the mandatory population-based healthcare database, the Western Denmark Heart Registry (WDHR), has provided the data for several research projects. As in most clinical registries, the data quality has not been validated thoroughly. This study was undertaken to evaluate the quality of registrations in the WDHR. METHODS: The audit supervised procedures from involved departments that were performed in 2013. An experienced research nurse completed data collection, and an experienced consultant evaluated the agreement between the WDHR and patient records...
October 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/28973101/coronary-computed-tomography-angiography-vs-functional-stress-testing-for-patients-with-suspected-coronary-artery-disease-a-systematic-review-and-meta-analysis
#10
Andrew J Foy, Sanket S Dhruva, Brandon Peterson, John M Mandrola, Daniel J Morgan, Rita F Redberg
Importance: Coronary computed tomography angiography (CCTA) is a new approach for the diagnosis of anatomical coronary artery disease (CAD), but it is unclear how CCTA performs compared with the standard approach of functional stress testing. Objective: To compare the clinical effectiveness of CCTA with that of functional stress testing for patients with suspected CAD. Data Sources: A systematic literature search was conducted in PubMed and MEDLINE for English-language randomized clinical trials of CCTA published from January 1, 2000, to July 10, 2016...
October 2, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/28971159/iliac-arteriovenous-fistulas-after-lumbar-spinal-surgery
#11
Osman Ocal, Bora Peynircioglu, Gonca Eldem, Erhan Akpinar, Mehmet Ruhi Onur, Giray Kabakci
Iatrogenic arteriovenous fistula (AVF) is an unusual and potentially fatal complication of lumbar spinal surgery. The presentation of these injuries is usually late, with symptoms such as leg swelling or cardiac failure. It is crucial to suspect AVF in the patient which presents to emergency with lumbar spinal surgery history. The diagnosis is often based on imaging studies such as computed tomography (CT) or magnetic resonance (MR) angiography. Surgery was the first choice of treatment, but with recent advances in stent technology endovascular approach has become widely popular...
September 2017: Turkish Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28962500/does-routine-preoperative-computed-tomography-imaging-provide-clinical-utility-in-patients-undergoing-primary-cardiac-surgery
#12
Aurelie Merlo, Kevin Chen, Salil Deo, Alan Markowitz
A best evidence topic in cardiac surgery was written according to a structured protocol. The question addressed was, in patients undergoing primary cardiac surgery, does routine preoperative computed tomography (CT) imaging provide clinical benefit as measured by either a decrease in complications or a change in surgical approach. Altogether, 125 papers were found using the reported search, of which 5 represented the best evidence to answer the clinical question. The authors, journal, date and country of publication, patient group studied, study type, relevant outcomes and results of these papers are tabulated...
October 1, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28950315/quantitative-global-plaque-characteristics-from-coronary-computed-tomography-angiography-for-the-prediction-of-future-cardiac-mortality-during-long-term-follow-up
#13
Michaela M Hell, Manish Motwani, Yuka Otaki, Sebastien Cadet, Heidi Gransar, Romalisa Miranda-Peats, Jacob Valk, Piotr J Slomka, Victor Y Cheng, Alan Rozanski, Balaji K Tamarappoo, Sean Hayes, Stephan Achenbach, Daniel S Berman, Damini Dey
Aims: Adverse plaque characteristics determined by coronary computed tomography angiography (CTA) have been associated with future cardiac events. Our aim was to investigate whether quantitative global per-patient plaque characteristics from coronary CTA can predict subsequent cardiac death during long-term follow-up. Methods and results: Out of 2748 patients without prior history of coronary artery disease undergoing CTA with dual-source CT, 32 patients suffered cardiac death (mean follow-up of 5 ± 2 years)...
July 29, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28947391/could-post-mortem-computed-tomography-angiography-inform-cardiopulmonary-resuscitation-research
#14
Guy N Rutty, Claire Robinson, Jasmin Amoroso, Tim Coats, Bruno Morgan
AIM: Firstly, to develop an optimised chest compression post mortem computed tomography angiography protocol in the adult human during closed chest compression to investigate cardiopulmonary resuscitation blood flow, and secondly to provide preliminary observations of post-mortem anatomical cardiac chamber movement using a novel radiolucent static chest compression device. METHODS: Variable volumes of radiological contrast agent were injected intravenously into a series of consented human cadavers...
September 23, 2017: Resuscitation
https://www.readbyqxmd.com/read/28937494/high-pitch-coronary-computed-tomographic-angiography-using-the-third-generation-dual-source-computed-tomography-initial-experience-in-patients-with-high-heart-rate
#15
Ruiqi Feng, Jingsong Mao, Xiaofei Liu, Yu Zhao, Jiajie Tong, Liang Zhang
OBJECTIVE: This study aimed to evaluate the feasibility, image quality, and radiation dose of prospectively high-pitch coronary computed tomographic (CT) angiography in patients with high heart rates (HRs) using the third-generation dual-source CT. METHODS: One hundred consecutive patients with sinus rhythm and HR between 70 and 100 beats per minute were enrolled into this study. All patients were divided into 2 groups. Patients in group A (n = 46) were examined with prospectively high-pitch scan mode in which image acquisition was triggered at 30% of the R-R interval...
September 20, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28937485/monitoring-dynamic-morphological-changes-with-electrocardiography-gated-dynamic-4-dimensional-computed-tomography-angiography-to-predict-intraoperative-rupture-of-intracranial-aneurysms
#16
Yan Gu, Lun Xu, Chunhong Hu, Meng Luo, Hongwei Zhang, Xiguang Liu
OBJECTIVE: This study aims to evaluate dynamic morphological changes of intracranial aneurysms to predict intraoperative aneurysm rupture (IAR) during clipping. METHODS: Included in this study were 153 patients, who had ruptured and microsurgical-clipped aneurysms. All patients underwent dual-source computed tomography examination of electrocardiography-gated dynamic 4-dimensional computed tomography angiography before clipping. Original scanning data were reconstructed to produce 20 data sets of cardiac cycles with 5% time intervals...
September 20, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28936993/coarctation-of-the-aorta-with-aortic-arch-hypoplasia-midterm-outcomes-of-aortic-arch-reconstruction-with-autologous-pulmonary-artery-patch
#17
Zhi-Ling Ma, Jun Yan, Shou-Jun Li, Zhong-Dong Hua, Fu-Xia Yan, Xu Wang, Qiang Wang
BACKGROUND: Coarctation of the aorta (CoA) with aortic arch hypoplasia (AAH) is a relatively common congenital heart disease in clinical practice. Nonetheless, the corrective surgical technique for infants and children is a clinical problem that remains controversial. In this study, we sought to evaluate the surgical effects of aortic arch (AA) reconstruction with coarctation resection and aortoplasty with autologous pulmonary artery patch for infants and young children with CoA and AAH...
September 21, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28931782/tumor-necrosis-factor-%C3%AE-gene-expression-in-epicardial-adipose-tissue-is-related-to-coronary-atherosclerosis-assessed-by-computed-tomography
#18
Toshiro Kitagawa, Hideya Yamamoto, Takuya Hattori, Kazuhiro Sentani, Shinya Takahashi, Atsuhiro Senoo, Yumiko Kubo, Wataru Yasui, Taijiro Sueda, Yasuki Kihara
AIMS: Tumor necrosis factor (TNF)-α reportedly has key pro-inflammatory properties in both atherosclerosis and adipocytes. To further investigate the biologic impact of epicardial adipose tissue (EAT) on coronary atherosclerosis, we evaluated the relationship between TNF-α gene expression in EAT and clinically-assessed coronary atherosclerosis on computed tomography (CT). METHODS: We studied 47 patients before cardiac surgery (coronary artery bypass grafting [CABG], n=26; non-CABG, n=21), assessing visceral adipose tissue (VAT) area, EAT volume, coronary calcium score (CCS), and the presence of non- and/or partially-calcified coronary plaque (NCP) on CT angiography...
September 20, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28930854/a-female-patient-with-hypokalaemia-induced-j-wave-syndrome-an-unusual-case-report
#19
Aqian Wang, Xiang Li, Muhammad Nabeel Dookhun, Tiancheng Zhang, Ping Xie, Yunshan Cao
RATIONALE: Prominent J waves can be seen in life-threatening cardiac arrhythmias such as Brugada syndrome, early repolarization syndrome, and ventricular fibrillation. We herein present an unusual case report of hypokalemia-induced J wave syndrome and ST (a part of ECG) segment elevation. PATIENTS CONCERNS: A 52-year-old woman with chief complaints of chest pain for 2 hours and diarrhea showed a marked hypokalemia (2.8 mmol/L) and slightly elevated creatine kinase-MB (CK-MB) (57...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28929333/late-iodine-enhancement-computed-tomography-with-image-subtraction-for-assessment-of-myocardial-infarction
#20
Yuki Tanabe, Teruhito Kido, Akira Kurata, Takanori Kouchi, Naoki Fukuyama, Takahiro Yokoi, Teruyoshi Uetani, Natsumi Yamashita, Masao Miyagawa, Teruhito Mochizuki
OBJECTIVE: To evaluate the feasibility of image subtraction in late iodine enhancement CT (LIE-CT) for assessment of myocardial infarction (MI). METHODS: A comprehensive cardiac CT protocol and late gadolinium enhancement MRI (LGE-MRI) was used to assess coronary artery disease in 27 patients. LIE-CT was performed after stress CT perfusion (CTP) and CT angiography. Subtraction LIE-CT was created by subtracting the mask volume of the left ventricle (LV) cavity from the original LIE-CT using CTP dataset...
September 19, 2017: European Radiology
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