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https://www.readbyqxmd.com/read/28823140/pre-existing-arterial-pathologic-changes-affecting-arteriovenous-fistula-patency-and-cardiovascular-mortality-in-hemodialysis-patients
#1
Ja Young Lee, Young Ok Kim
The radiocephalic arteriovenous fistula (AVF) provides optimal vascular access for hemodialysis; it has a higher long-term patency rate and fewer complications than other vascular access methods. However, the AVF has a high primary failure rate. The presence of small-diameter vessels at anastomosis sites is an important risk factor for AVF failure. However, in a recent study, despite selecting an adequate artery and vein for creating an AVF by routine preoperative vascular mapping, AVF maturation and primary failure occurred...
August 22, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28823011/guidelines-versus-reality-is-coronary-stent-application-in-three-vessel-disease-standard-or-the-exception
#2
Roland Linder, J Zeidler, F Verheyen, J-M Graf von der Schulenburg, A Haverich, T Schilling
The national guidelines for treatment of chronic coronary heart disease (CHD) recommend surgical coronary aortic bypass grafting (CABG) rather than percutaneous coronary intervention (PCI) for patients with a coronary three-vessel disease. The epidemiology of three-vessel CHD and data about the application of different revascularisation strategies raise suspicion of deviation from the guidelines in the treatment of those patients. Claims data containing records of almost 10 million patients of the largest German statutory health insurance fund (Techniker Krankenkasse) were utilised to measure adherence to the guidelines for treatment of groups of patients with one-, two-, and three-vessel CHD, respectively...
August 19, 2017: European Journal of Health Economics: HEPAC: Health Economics in Prevention and Care
https://www.readbyqxmd.com/read/28822527/coronary-artery-disease-in-women
#3
REVIEW
Lekha Adik Pathak, Salil Shirodkar, Ronak Ruparelia, Jaideep Rajebahadur
BACKGROUND: Despite the importance of CAD for women, there is persistent perception that CAD is a man's disease. Contributing to this notion is the observation of differences in incidence rates according to age; the incidence of CAD in women is lower than men, but rises steadily after fifth decade. The distribution of CAD risk factors varies between men and women across age ranges and failure to consider these differences may have contributed to the belief that women are at lower risk of CAD compared with men...
July 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28822520/coronary-artery-dimensions-in-normal-indians
#4
Barendra Kumar Raut, Vijaysinh Namdeo Patil, George Cherian
BACKGROUND: Diameter of coronary artery is an important predictor of outcome after percutaneous coronary interventions and coronary artery bypass graft surgery. There is very limited data available about coronary artery dimensions in an Indian population. AIMS: To study the normal dimensions of the coronary artery segments in Indians without coronary artery disease by using quantitative coronary angiography and also to compare the dimensions in Indians with Western...
July 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28821512/protocol-for-an-economic-evaluation-of-the-randomised-controlled-trial-of-culprit-lesion-only-pci-versus-immediate-multivessel-pci-in-acute-myocardial-infarction-complicated-by-cardiogenic-shock-culprit-shock-trial
#5
Zahidul Quayyum, Andrew Briggs, Jose Robles-Zurita, Keith Oldroyd, Uwe Zeymer, Steffen Desch, Suzanne de Waha, Holger Thiele
INTRODUCTION: Emergency percutaneous coronary intervention (PCI) of the culprit lesion for patients with acute myocardial infarctions is an accepted practice. A majority of patients present with multivessel disease with additional relevant stenoses apart from the culprit lesion. In haemodynamically stable patients, there is increasing evidence from randomised trials to support the practice of immediate complete revascularisation. However, in the presence of cardiogenic shock, the optimal management strategy for additional non-culprit lesions is unknown...
August 18, 2017: BMJ Open
https://www.readbyqxmd.com/read/28819961/-bioresorbable-scaffolds-in-the-treatment-of-coronary-artery-disease-expert-consensus-statement-of-the-association-of-cardiovascular-interventions-of-the-polish-cardiac-society-acvi-pcs
#6
Krzysztof Reczuch, Krzysztof Milewski, Wojciech Wąsek, Łukasz Rzeszutko, Wojciech Wojakowski, Michał Hawranek, Adrian Włodarczak, Tomasz Pawłowski, Janusz Kochman, Sławomir Dobrzycki, Marek Grygier, Andrzej Ochała, Jarosław Wójcik, Maciej Lesiak, Dariusz Dudek, Jacek Legutko
Bioresorbable scaffold coated with antimitotic drug is the latest development in the coronary stents technology. The concept of temporary scaffolding and natural vessel healing after angioplasty is a very attractive alternative to conventional metal stents. The results of the first observational studies have confirmed their ultimate biodegradation. Newest results of randomised trials and registries in broader clinical and anatomical indications also revealed the limitations of the first generation of scaffolds...
2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28818306/time-harmonic-ultrasound-elastography-of-the-descending-abdominal-aorta-initial-results
#7
Lars-Arne Schaafs, Heiko Tzschätzsch, Markus van der Giet, Alexander Reshetnik, Ingo G Steffen, Bernd Hamm, Jürgen Braun, Ingolf Sack, Thomas Elgeti
Stiffening of central large vessels is considered a key pathophysiologic factor within the cardiovascular system. Current diagnostic parameters such as pulse wave velocity (PWV) indirectly measure aortic stiffness, a hallmark of coronary diseases. The aim of the present study was to perform elastography of the proximal abdominal aorta based on externally induced time-harmonic shear waves. Experiments were performed in 30 healthy volunteers (25 young, 5 old, >50 y) and 5 patients with longstanding hypertension (PWV >10 m/s)...
August 14, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28818167/long-term-outcomes-of-paclitaxel-eluting-versus-sirolimus-eluting-stent-for-percutaneous-coronary-intervention-ameta-analysis
#8
Jie Kong, Peng Liu, Xueqiang Fan, Jianyan Wen, Jianbin Zhang, Yanan Zhen, Jinyong Li, Yiyao Cui, Xia Zheng, Zhidong Ye
The relative long-term efficacy and safety of sirolimus-eluting stents (SES) compared with paclitaxel-eluting stents (PES) in multiple comparative studies remains controversial. This report evaluates 29 randomized trials with 18,379 patients in whom long-term (more than 1 year) outcomes were evaluated. The primary outcomes were target lesion revascularization (TLR) and the secondary end points were death, cardiac death, myocardial infarction (MI), major adverse cardiac events (MACEs), target vessel revascularization (TVR) and stent thrombosis (ST)...
July 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28811356/clinical-characteristics-of-heart-involvement-in-chinese-patients-with-takayasu-arteritis
#9
Jing Li, Hongchao Li, Fei Sun, Zhe Chen, Yunjiao Yang, Jiuliang Zhao, Mengtao Li, Xinping Tian, Xiaofeng Zeng
OBJECTIVE: To understand the characteristics of heart involvement in Chinese patients with Takayasu arteritis (TA). METHODS: The medical charts of 411 patients with TA (325 women, 86 men) were retrospectively reviewed. The comparison of clinical manifestations was carried out between the patients with TA with (n = 164) and without (n = 247) heart involvement. RESULTS: The median age at disease onset was 23.0 years (18.0-30.0) in 411 patients with TA, and 23...
August 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28808947/the-sydney-heart-bank-improving-translational-research-while-eliminating-or-reducing-the-use-of-animal-models-of-human-heart-disease
#10
REVIEW
C G Dos Remedios, S P Lal, A Li, J McNamara, A Keogh, P S Macdonald, R Cooke, E Ehler, R Knöll, S B Marston, J Stelzer, H Granzier, C Bezzina, S van Dijk, F De Man, G J M Stienen, J Odeberg, F Pontén, W Linke, J van der Velden
The Sydney Heart Bank (SHB) is one of the largest human heart tissue banks in existence. Its mission is to provide high-quality human heart tissue for research into the molecular basis of human heart failure by working collaboratively with experts in this field. We argue that, by comparing tissues from failing human hearts with age-matched non-failing healthy donor hearts, the results will be more relevant than research using animal models, particularly if their physiology is very different from humans. Tissue from heart surgery must generally be used soon after collection or it significantly deteriorates...
August 14, 2017: Biophysical Reviews
https://www.readbyqxmd.com/read/28807553/coronary-artery-segmentation-in-x-ray-angiograms-using-gabor-filters-and-differential-evolution
#11
Fernando Cervantes-Sanchez, Ivan Cruz-Aceves, Arturo Hernandez-Aguirre, Sergio Solorio-Meza, Teodoro Cordova-Fraga, Juan Gabriel Aviña-Cervantes
Segmentation of coronary arteries in X-ray angiograms represents an essential task for computer-aided diagnosis, since it can help cardiologists in diagnosing and monitoring vascular abnormalities. Due to the main disadvantages of the X-ray angiograms are the nonuniform illumination, and the weak contrast between blood vessels and image background, different vessel enhancement methods have been introduced. In this paper, a novel method for blood vessel enhancement based on Gabor filters tuned using the optimization strategy of Differential evolution (DE) is proposed...
August 5, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28805032/improving-outcomes-after-cabg-and-pci
#12
EDITORIAL
Robert D Safian
Within 1 year of coronary artery bypass surgery , 64% of percutaneous coronary interventions were performed for graft failure and 36% for native vessel disease. Predictors of graft failure were small diameter of the graft and native vessel, poor distal run-off, and disease distal to the graft. In the near future, cardiac computed tomography angiography (CCTA) and fractional flow reserve by CT (FFRct) will incorporate accurate determination of coronary anatomy and the presence and extent of myocardial ischemia...
August 1, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28804899/coronary-artery-disease-and-risk-of-adverse-cardiac-events-and-stroke
#13
Kevin Kris Warnakula Olesen, Morten Madsen, Gregory Lip, Gro Egholm, Troels Thim, Lisette Okkels Jensen, Bent Raungaard, Jens Cosedis Nielsen, Hans Erik, Henrik Toft Sørensen, Michael Maeng
BACKGROUND: Patients with acute myocardial infarction are at increased risk of ischemic stroke. Previous myocardial infarction is an important part of risk assessment for ischemic stroke. However, there is a lack of information regarding the association between the severity and extent of coronary artery disease and long-term risk of ischemic stroke. MATERIALS AND METHODS: A cohort study of coronary angiographies performed in Western Denmark from January 1, 2003 to December 31, 2012...
August 14, 2017: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28803216/3d-2d-registration-with-superabundant-vessel-reconstruction-for-cardiac-resynchronization-therapy
#14
Daniel Toth, Maria Panayiotou, Alexander Brost, Jonathan M Behar, Christopher A Rinaldi, Kawal S Rhode, Peter Mountney
A key component of image guided interventions is the registration of preoperative and intraoperative images. Classical registration approaches rely on cross-modality information; however, in modalities such as MRI and X-ray there may not be sufficient cross-modality information. This paper proposes a fundamentally different registration approach which uses adjacent anatomical structures with superabundant vessel reconstruction and dynamic outlier rejection. In the targeted clinical scenario of cardiac resynchronization therapy (CRT) delivery, preoperative, non contrast-enhanced, MRI is registered to intraoperative, contrasted X-ray fluoroscopy...
August 5, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28802533/bifurcation-culprit-lesions-in-st-segment-elevation-myocardial-infarction-procedural-success-and-5-year-outcome-compared-with-nonbifurcation-lesions
#15
Pablo Salinas, Hernán Mejía-Rentería, Raúl Herrera-Nogueira, Pilar Jiménez-Quevedo, Luis Nombela-Franco, Iván Javier Núñez-Gil, Nieves Gonzalo, María Del Trigo, María José Pérez-Vizcayno, Alicia Quirós, Javier Escaned, Carlos Macaya, Antonio Fernández-Ortiz
INTRODUCTION AND OBJECTIVES: We assessed short- and long-term outcomes of primary angioplasty in ST-segment elevation myocardial infarction by comparing bifurcation culprit lesions (BCL) with non-BCL. METHODS: Observational study with a propensity score matched control group. Among 2746 consecutive ST-segment elevation myocardial infarction patients, we found 274 (10%) patients with BCL. The primary outcome was a composite endpoint including all-cause death, myocardial infarction, coronary artery bypass grafting or target vessel revascularization, assessed at 30-days and 5-years...
August 9, 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28801918/motion-compensation-in-the-region-of-the-coronary-arteries-based-on-partial-angle-reconstructions-from-short-scan-ct-data
#16
Juliane Hahn, Herbert Bruder, Christopher Rohkohl, Thomas Allmendinger, Karl Stierstorfer, Thomas Flohr, Marc Kachelrieß
PURPOSE: In order to mitigate motion-induced artifacts, several motion compensation (MoCo) methods have been developed, which are either able to a) compensate for severe artifacts, but utilize the data for the reconstruction of several cardiac phases, or b) improve image quality of a single reconstruction with only moderate motion artifacts. We propose a method combining both benefits: dose efficiency by utilizing only the data needed for a single short-scan reconstruction while still being able to compensate for severe artifacts...
August 12, 2017: Medical Physics
https://www.readbyqxmd.com/read/28800951/evaluation-of-a-high-concentrated-contrast-media-injection-protocol-in-combination-with-low-tube-current-for-dose-reduction-in-coronary-computed-tomography-angiography-a-randomized-two-center-prospective-study
#17
Yibo Sun, Yanqing Hua, Mingpeng Wang, Dingbiao Mao, Xiu Jin, Cheng Li, Kailei Shi, Jianrong Xu
RATIONALE AND OBJECTIVES: The study aimed to prospectively evaluate the radiation dose reduction potential and image quality (IQ) of a high-concentration contrast media (HCCM) injection protocol in combination with a low tube current (mAs) in coronary computed tomography angiography. MATERIALS AND METHODS: Eighty-one consecutive patients (mean age: 62 years; 34 females; body mass index: 18-31) were included and randomized-assigned into two groups. All computed tomography (CT) examinations were performed in two groups with the same tube voltage (100 kV), flow rate of contrast medium (5...
August 8, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28800599/extracting-information-from-free-text-electronic-patient-records-to-identify-practice-based-evidence-of-the-performance-of-coronary-stents
#18
Yoon Seob Kim, Dukyong Yoon, JungHyun Byun, Hojun Park, Ahram Lee, Il Hyun Kim, Sukhoon Lee, Hong-Seok Lim, Rae Woong Park
BACKGROUND AND OBJECTIVE: Percutaneous coronary intervention (PCI) using drug-eluting stents (DES) is an indispensable treatment for coronary artery disease. However, to evaluate the performance of various types of stents for PCI, numerous resources are required. We extracted clinical information from free-text records and, using practice-based evidence, compared the efficacy of various DES. MATERIALS AND METHODS: We developed a text mining tool based on regular expression and applied it to PCI reports stored in the electronic health records (EHRs) of Ajou University Hospital from 2010-2014...
2017: PloS One
https://www.readbyqxmd.com/read/28799978/role-of-fractional-flow-reserve-in-the-evaluation-and-management-of-patients-with-acute-coronary-syndrome
#19
Abdul Hakeem, Ahmed Almomani, Barry F Uretsky
PURPOSE OF REVIEW: The aim of this review is to appraise the clinical and prognostic value and pitfalls of FFR across different spectra of ACS presentations and lesion subsets. RECENT FINDINGS: Preponderance of evidence on this subject is from observational nonrandomized studies with conflicting results and short-term outcomes. Multiple recent studies evaluating the role of FFR-based deferral in non-STE ACS from a potentially culprit lesion have demonstrated poor long-term prognosis as related to future risk of target vessel failure (myocardial infarction/revascularization)...
August 10, 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/28799701/drug-eluting-stents-versus-coronary-artery-bypass-grafting-for-left-main-coronary-artery-disease
#20
Hisato Takagi, Tomo Ando, Takuya Umemoto
OBJECTIVES: To compare follow-up outcomes after percutaneous coronary intervention with drug-eluting stents (DES-PCI) versus coronary artery bypass grafting (CABG) for left-main coronary artery disease (LMCAD), we performed a meta-analysis of randomized controlled trials (RCTs) and observational studies with propensity-score analysis. METHODS: MEDLINE, EMBASE, and the Cochrane Central Register of Controlled Trials were searched through November 2016. Eligible studies were RCTs or observational studies with propensity-score analysis of DES-PCI versus CABG enrolling patients with LMCAD and reporting ≥ 6-month mortality, myocardial infarction (MI), stroke, or repeat revascularization (RRV)...
August 11, 2017: Catheterization and Cardiovascular Interventions
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