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Coronary angiography

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https://www.readbyqxmd.com/read/28346530/quantification-of-left-coronary-bifurcation-angles-and-plaques-by-coronary-computed-tomography-angiography-for-prediction-of-significant-coronary-stenosis-a-preliminary-study-with-dual-source-ct
#1
Yue Cui, Wenjuan Zeng, Jie Yu, Jing Lu, Yuannan Hu, Nan Diao, Bo Liang, Ping Han, Heshui Shi
PURPOSE: To evaluate the diagnostic performance of left coronary bifurcation angles and plaque characteristics for prediction of coronary stenosis by dual-source CT. METHODS: 106 patients suspected of coronary artery disease undergoing both coronary computed tomography angiography (CCTA) and invasive coronary angiography (CAG) within three months were included. Left coronary bifurcation angles including the angles between the left anterior descending artery and left circumflex artery (LAD-LCx), left main coronary artery and left anterior descending artery (LM-LAD), left main coronary artery and left circumflex artery (LM-LCx) were measured on CT images...
2017: PloS One
https://www.readbyqxmd.com/read/28345395/evaluation-of-the-predictive-value-of-cha2ds2-vasc-score-for-in-stent-restenosis
#2
Samet Yilmaz, Mehmet Kadri Akboga, Dursun Aras, Serkan Topaloglu
The CHA2DS2-VASc (congestive heart failure, hypertension, age ≥75 years, diabetes mellitus, previous stroke, vascular disease, age 65-74 years, female gender) score is used to estimate thromboembolic risk in atrial fibrillation (AF). Its usefulness in predicting in-stent restenosis (ISR) is unknown. We evaluated the predictive value of the CHA2DS2-VASc score in AF-free patients who have undergone stent implantation. A total of 1350 patients who underwent coronary angiography and successful bare-metal stent implantation were analyzed...
January 1, 2017: Angiology
https://www.readbyqxmd.com/read/28344214/the-outcomes-of-intravascular-ultrasound-guided-drug-eluting-stent-implantation-among-patients-with-complex-coronary-lesions-a-comprehensive-meta-analysis-of-15-clinical-trials-and-8-084-patients
#3
Zhong Guo Fan, Xiao Fei Gao, Xiao Bo Li, Ming Xue Shao, Ya Li Gao, Shao Liang Chen, Nai Liang Tian
OBJECTIVE: The effects of intravascular ultrasound (IVUS)-guided drug-eluting stent (DES) implantation in patients with complex coronary artery lesions remains to be controversial. This study sought to evaluate the outcomes of IVUS guidance in these patients. METHODS: The EMBASE, Medline, and other internet sources were searched for relevant articles. The primary endpoint was major adverse cardiac events (MACE), including all-cause mortality, myocardial infarction (MI), and target-vessel revascularization (TVR)...
March 22, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28343785/pericardial-mesothelioma-presenting-as-a-suspected-st-elevation-myocardial-infarction
#4
Ana Sofia Barroso, Sérgio Leite, Fernando Friões, Mariana Vasconcelos, Daniela Azevedo, Helena Baldaia, Mário Jorge Amorim, Paula Dias
Primary cardiac and pericardial tumors are rare entities with an autopsy frequency of 0.001-0.03%. Metastases to the heart and pericardium are much more common than primary tumors. Malignant pericardial mesotheliomas account for up to 50% of primary pericardial tumors. We report the case of a 75-year-old woman with hypertension, dyslipidemia and atrial fibrillation who went to the emergency department due to nonspecific thoracic discomfort of over six hours duration associated with syncope. Physical examination revealed a low-amplitude arrhythmic pulse, no heart murmurs and no signs of pulmonary congestion...
March 23, 2017: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/28343599/presence-characteristics-and-volumes-of-coronary-plaque-determined-by-computed-tomography-angiography-in-young-type-2-diabetes-mellitus
#5
Negin Nezarat, Matthew J Budoff, Yanting Luo, Sirous Darabian, Rine Nakanishi, Dong Li, Nasim Sheidaee, Michael Kim, Anas Alani, Suguru Matsumoto, Sina Rahmani, Mitsuru Kanisawa, Indre Ceponiene, Kazuhiro Osawa, Hong Qi, Sajad Hamal, Pieter Kitslaar, Alexander Broersen, Ferdinand Flores, Eli Ipp, Bahram Khazai
Prevention and management of coronary artery disease (CAD) is of great concern in patients with diabetes mellitus. Although the impact of coronary atherosclerosis is described well for subjects older than 40 years, the prevalence and types of coronary atherosclerosis in young patients are not well known. The aim of this study was to evaluate the prevalence, extent, severity, and volumes of coronary plaque in type 2 diabetes mellitus (T2DM) population younger than of 40 years. This prospective study enrolled 181 subjects (25-40 year old) undergoing coronary computed tomography angiography, with 86 T2DM and 95 nondiabetic age/gender-matched subjects...
March 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28342839/a-case-of-severely-calcified-neoatherosclerosis-after-paclitaxel-eluting-stent-implantation
#6
Kei Yamamoto, Kenichi Sakakura, Yousuke Taniguchi, Hiroshi Wada, Shin-Ichi Momomura, Hideo Fujita
A 79-year-old male who had a history of coronary artery bypass grafting (CABG) and percutaneous coronary intervention (PCI) received coronary angiography (CAG), because of angina pectoris. CAG showed in-stent restenosis of the paclitaxel-eluting stent (PES). Since the devices could not pass the lesion, we performed rotational atherectomy. Although we could not identify the calcified lesion by the optical frequency domain imaging (OFDI) findings because of strong attenuation, the intravascular ultrasound (IVUS) image showed the superficial calcification...
March 15, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28342678/spontaneous-coronary-artery-intramural-hematoma-in-a-patient-with-vascular-ehlers-danlos-syndrome-serial-findings-in-coronary-computed-tomographic-angiography
#7
Takayoshi Toba, Shumpei Mori, Atsushi Yatani, Yoichiro Sugisaki, Tomomi Akita, Naoto Sasaki, Hiromasa Otake, Toshiro Shinke, Hiroyuki Mori, Tatsuya Nishii, Atsushi K Kono, Ken-Ichi Hirata
No abstract text is available yet for this article.
March 21, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28342101/myocardial-segmentation-based-on-coronary-anatomy-using-coronary-computed-tomography-angiography-development-and-validation-in-a-pig-model
#8
Mi Sun Chung, Dong Hyun Yang, Young-Hak Kim, Soo-Jin Kang, Joonho Jung, Namkug Kim, Seung-Ho Heo, Seunghee Baek, Joon Beom Seo, Byoung Wook Choi, Joon-Won Kang, Tae-Hwan Lim
OBJECTIVES: To validate a method for performing myocardial segmentation based on coronary anatomy using coronary CT angiography (CCTA). METHODS: Coronary artery-based myocardial segmentation (CAMS) was developed for use with CCTA. To validate and compare this method with the conventional American Heart Association (AHA) classification, a single coronary occlusion model was prepared and validated using six pigs. The unstained occluded coronary territories of the specimens and corresponding arterial territories from CAMS and AHA segmentations were compared using slice-by-slice matching and 100 virtual myocardial columns...
March 24, 2017: European Radiology
https://www.readbyqxmd.com/read/28341355/comparison-of-clinical-and-electrocardiographic-predictors-of-ischemic-and-nonischemic-cardiomyopathy-during-the-initial-evaluation-of-patients-with-reduced-%C3%A2-40-left-ventricular-ejection-fraction
#9
Nathaniel R Smilowitz, Arvind R Devanabanda, George Zakhem, Sohah N Iqbal, William Slater, John T Coppola
Invasive coronary angiography is routinely performed during the initial evaluation of patients with suspected cardiomyopathy with reduced left ventricular function. Clinical and electrocardiographic (ECG) data may accurately predict ischemic cardiomyopathy (IC). Medical records of adults referred for coronary angiography for evaluation of left ventricular ejection fraction ≤40% from 2010 to 2014 were retrospectively reviewed. Patients with myocardial infarction (MI), previous coronary revascularization, cardiac surgery, or left-sided valvular disease were excluded...
March 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28340900/-radial-approach-in-women
#10
J Wintzer-Wehekind, S Milouchi, A Rouge, J Monségu
Since the first series of coronary angiographies through the radial approach reported by Campeau in 1989, the radial route has become a major approach, used in up to 95 % of PCIs in some centers. As documented by this clinical case, and although registries show that the radial approach is underused in women compared to men, women benefit from the radial approach mainly by reducing the bleeding risk. Indeed, despite more frequent difficulties encountered by using this approach in women, the radial approach has to be preferred because it reduces haemorrhagic complications and death in comparison to the femoral route...
December 2016: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/28338554/eligibility-for-minimally-invasive-coronary-artery-bypass-examination-of-epicardial-adipose-tissue-using-computed-tomography
#11
Kate E M Dillon, Marjorie Johnson, Ian L Chan, Bob Kiaii
OBJECTIVE: A variable that necessitates conversion to a conventional full-sternotomy coronary artery bypass procedure from a robotic-assisted endoscopic single-vessel small thoracotomy is the inability to visualize the left anterior descending coronary artery within the surrounding epicardial adipose tissue using the endoscopic camera. The purpose of this study was to determine whether anatomical properties of the epicardial adipose tissue examined using preoperative computed tomography (CT) images are able to predict and thus reduce the need for intraoperative conversion based on effective preoperative exclusion criteria...
March 23, 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/28338117/endovascular-treatment-for-acute-mesenteric-ischaemia-in-a-young-woman-with-polyarterial-disease
#12
Mihai C Ober, Calin Homorodean, Dan A Tataru, Antonia E Macarie, Camelia D Ober, Dan M Olinic
BACKGROUND: Acute mesenteric ischaemia is a condition with a grim prognosis on conservative treatment. Endovascular revascularisation is a promising approach for some of these patients. CASE REPORT: We present the case of a 44-year-old woman with a history of severe arterial hypertension, left leg claudication, and overlooked symptoms of chronic mesenteric ischaemia for one year, who was admitted for severe abdominal pain for one week. Computed tomographic angiography (CTA) showed acute mesenteric ischaemia by occlusion of the coeliac trunk and the superior mesenteric artery (SMA), without bowel perforation...
March 2017: Journal of Gastrointestinal and Liver Diseases: JGLD
https://www.readbyqxmd.com/read/28337781/rationale-and-design-of-a-multicenter-international-and-collaborative-coronary-artery-aneurysm-registry-caar
#13
Iván J Núñez-Gil, Luis Nombela-Franco, Rodrigo Bagur, Mario Bollati, Enrico Cerrato, Emilio Alfonso, Christoph Liebetrau, José María De la Torre Hernandez, Benjamín Camacho, Rafael Mila, Ignacio J Amat-Santos, Fernando Alfonso, Ramón Rodríguez-Olivares, Santiago J Camacho Freire, Íñigo Lozano, Víctor Alfonso Jiménez Díaz, Davide Piraino, Roberto Adriano Latini, Gisela Feltes, Jose Antonio Linares, Massimo Mancone, Alfonso Ielasi, Alejandro Sánchez-Grande Flecha, Agustín Fernández Cisnal, Fabrizio Ugo, Jesús M Jiménez Mazuecos, Pierluigi Omedè, Marco Pavani, Pedro A Villablanca, Boshra F Louka, Antonio Fernández-Ortiz
Coronary artery aneurysm is defined as a coronary dilation that exceeds the diameter of adjacent segments or the diameter of the patient's largest normal coronary vessel by 1.5×. It is an uncommon disease that has been diagnosed with increasing frequency since the widespread appearance of coronary angiography. The published incidence varies from 1.5% to 5%, suggesting male dominance and a predilection for the right coronary artery. Although several causes have been described, atherosclerosis accounts for ≥50% of coronary aneurysms in adults...
March 24, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/28336922/novel-and-traditional-lipid-related-biomarkers-and-their-combinations-in-predicting-coronary-severity
#14
Sha Li, Yuan-Lin Guo, Xi Zhao, Yan Zhang, Cheng-Gang Zhu, Na-Qiong Wu, Rui-Xia Xu, Ping Qing, Ying Gao, Xiao-Lin Li, Jing Sun, Geng Liu, Qian Dong, Jian-Jun Li
We investigated simultaneously traditional and novel lipid indices, alone or in combination, in predicting coronary severity assessed by Gensini score (GS) in 1605 non-lipid-lowering-drug-treated patients undergoing coronary angiography. Firstly, levels of triglycerides (TG), total cholesterol (TC), low density lipoprotein cholesterol (LDL-C), non high density lipoprotein cholesterol (non-HDL-C), apolipoprotein (apo) B, lipoprotein (a) [Lp(a)], proprotein convertase subtilisin/kexin type 9 (PCSK9), apoC3, small dense LDL (sdLDL) and large HDL were increased, while HDL-C and apoA1 levels were decreased as GS status (all p for trend <0...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28335983/ideal-guiding-catheter-position-during-bilaterally-engaged-percutaneous-coronary-intervention
#15
Kensuke Yokoi, Masahiko Hara, Yasunori Ueda, Satoru Sumitsuji, Masaki Awata, Youssef K Salah, Daijiro Kabata, Ayumi Shintani, Yasushi Sakata
Using a novel combined angiography computed tomography (CT) system, we evaluated the impact of the intra-aortic root position of a right coronary artery (RCA) catheter on its coaxiality. We retrospectively enrolled 19 patients who underwent CT scans during bilaterally engaged percutaneous coronary intervention. Coaxiality was defined as the angle between the RCA and the RCA catheter. The coaxiality was better when the RCA catheter was placed anterior to the left main coronary artery catheter (median 27.0° vs 53...
March 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28331775/diagonal-earlobe-crease-as-a-significant-marker-for-coronary-artery-disease-a-case-control-study
#16
Rida Kamal, Komal Kausar, Ahmed H Qavi, Moeed H Minto, Fariha Ilyas, Salman Assad, Saeed U Shah
OBJECTIVES: To investigate the association between diagonal earlobe crease (DELC) and coronary artery disease (CAD). Limited data exists in South Asia and no prior studies have been performed in Pakistan to assess this relationship. METHODS: In this case-control study, 200 participants from December 2015 to March 2016 at Shifa International Hospital, Islamabad, Pakistan were enrolled. Consecutive non-probability sampling was used to recruit patients. Cases were enrolled from cardiac care unit (CCU) of the hospital with angiography-proven CAD...
February 5, 2017: Curēus
https://www.readbyqxmd.com/read/28331135/applicability-of-3-dimensional-quantitative-coronary-angiography-derived-computed-fractional-flow-reserve-for-intermediate-coronary-stenosis
#17
Kyoichiro Yazaki, Masato Otsuka, Shohei Kataoka, Mitsuru Kahata, Asako Kumagai, Koji Inoue, Hiroshi Koganei, Kenji Enta, Yasuhiro Ishii
BACKGROUND: Quantitative flow ratio (QFR) is a newly developed image-based index for estimating fractional flow reserve (FFR).Methods and Results:We analyzed 151 coronary arteries with intermediate stenosis in 142 patients undergoing wire-based FFR measurement using dedicated software. Predefined contrast flow QFR, which was derived from 3-dimensional quantitative coronary angiography (3-D QCA) withThrombolysis in Myocardial Infarction (TIMI) frame counts, was compared with FFR as a reference...
March 22, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28330794/radiation-exposure-and-vascular-access-in-acute-coronary-syndromes-the-radmatrix-trial
#18
Alessandro Sciahbasi, Enrico Frigoli, Alessandro Sarandrea, Martina Rothenbühler, Paolo Calabrò, Alessandro Lupi, Francesco Tomassini, Bernardo Cortese, Stefano Rigattieri, Enrico Cerrato, Dennis Zavalloni, Antonio Zingarelli, Paolo Calabria, Paolo Rubartelli, Gennaro Sardella, Matteo Tebaldi, Stephan Windecker, Peter Jüni, Dik Heg, Marco Valgimigli
BACKGROUND: It remains unclear whether radial increases the risk of operator or patient radiation exposure when performed by expert operators OBJECTIVES: To determine whether radial access increases radiation exposure METHODS: We randomly assigned 8404 patients, with or without ST-segment elevation acute coronary syndrome, to radial or femoral access for coronary angiography and percutaneous intervention, and collected fluoroscopy time and dose area product (DAP). In the radiation sub-study (RAD-MATRIX), we anticipated that 13 or more operators, each wearing a thorax (primary endpoint), wrist and head (secondary endpoints) lithium fluoride thermo luminescent dosimeter and randomizing at least 13 patients per access site were needed to establish non-inferiority of radial versus femoral access...
March 15, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28330670/layered-fibrotic-plaques-are-the-predominant-component-in-cardiac-allograft-vasculopathy-systematic-findings-and-risk-stratification-by-oct
#19
Tor Skibsted Clemmensen, Niels Ramsing Holm, Hans Eiskjær, Brian Bridal Løgstrup, Evald Høj Christiansen, Jouke Dijkstra, Trine Ørhøj Barkholt, Christian Juhl Terkelsen, Michael Maeng, Steen Hvitfeldt Poulsen
OBJECTIVES: The aims of this study were to characterize cardiac allograft vasculopathy (CAV) phenotypes using optical coherence tomography (OCT) and to evaluate the prognostic significance of OCT-determined CAV severity. BACKGROUND: Intravascular OCT enables in vivo characterization of CAV microstructure after heart transplantation. METHODS: Sixty-two patients undergoing heart transplantation were enrolled at routine angiography from September 2013 through October 2015 and prospectively followed until censoring on May 27, 2016...
March 10, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28330658/nonobstructive-coronary-artery-disease-by-coronary-ct-angiography-improves%C3%A2-risk-stratification-and-allocation%C3%A2-of-statin%C3%A2-therapy
#20
Hamed Emami, Richard A P Takx, Thomas Mayrhofer, Sumbal Janjua, Jakob Park, Amit Pursnani, Ahmed Tawakol, Michael T Lu, Maros Ferencik, Udo Hoffmann
OBJECTIVES: This study sought to determine prognostic value of nonobstructive coronary artery disease (CAD) for atherosclerotic cardiovascular disease (ASCVD) events and to determine whether incorporation of this information into the pooled cohort equation reclassifies recommendations for statin therapy as defined by the 2013 guidelines for cholesterol management of the American College of Cardiology and American Heart Association (ACC/AHA). BACKGROUND: Detection of nonobstructive CAD by coronary computed tomography angiography may improve risk stratification and permit individualized and more appropriate allocation of statin therapy...
March 10, 2017: JACC. Cardiovascular Imaging
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