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https://www.readbyqxmd.com/read/28318875/feasibility-of-pet-for-the-management-of-coronary-artery-disease-comparison-between-cfr-and-ffr
#1
REVIEW
Osamu Manabe, Masanao Naya, Nagara Tamaki
Myocardial perfusion imaging using positron emission tomography (PET) allows both qualitative and quantitative measurement. The quantitative myocardial blood flow and coronary flow reserve (CFR) are reliable indices for evaluating functional severity, influenced by both epicardial stenosis and microvascular disease. Fractional flow reserve (FFR) also reflects physiological stenosis, which measures the pressure differences across a coronary artery stenosis during maximum hyperemia. Discordance between CFR and FFR has been noticed in estimating the functional significance of coronary stenosis...
March 16, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28316350/peek-and-cfr-peek-as-alternative-bearing-materials-to-uhmwpe-in-a-fixed-bearing-total-knee-replacement-an-experimental-wear-study
#2
Claire L Brockett, Silvia Carbone, John Fisher, Louise M Jennings
New bearing materials for total joint replacement have been explored as the need to improve longevity and enhance performance is driven by the changing demands of the patient demographic. Carbon-reinforced PEEK has demonstrated good wear characteristics in experimental wear simulation in both simple geometry pin-on-plate studies and in total hip joint replacement. Carbon reinforced PEEK CFR-PEEK has the potential to reduce tibial insert thickness and preserve bone in the knee. This study investigated the wear performance of PEEK and CFR-PEEK in a low conformity total knee replacement configuration...
March 15, 2017: Wear: An International Journal on the Science and Technology of Friction Lubrication and Wear
https://www.readbyqxmd.com/read/28306335/prognostic-value-of-normal-positron-emission-tomography-myocardial-perfusion-imaging-in-patients-with-known-or-suspected-coronary-artery-disease-a-meta-analysis
#3
A'Di Chen, HaoSen Wang, Bing Fan, YaWei Xu, Wei Chen, Neng Dai
OBJECTIVE: Several studies have confirmed high diagnostic performance of positron emission tomography (PET) myocardial perfusion imaging (MPI) in patients with known or suspected coronary artery disease (CAD). However, whether the superior diagnostic accuracy could translate into improved mortality outcomes remains unknown. The aim of this study was to define the prognostic value of normal PET MPI. METHODS: PubMed and EMBASE were searched to identify related studies up to June 2016...
March 17, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28300369/perturbation-effects-of-the-carbon-fiber-peek-screws-on-radiotherapy-dose-distribution
#4
Alexander Nevelsky, Egor Borzov, Shahar Daniel, Raquel Bar-Deroma
Radiation therapy, in conjunction with surgical implant fixation, is a common combined treatment in cases of bone metastases. However, metal implants generally used in orthopedic implants perturb radiation dose distributions. Carbon-Fiber Reinforced Polyetheretherketone (CFR-PEEK) material has been recently introduced for production of intramedullary nails and plates. The purpose of this work was to investigate the perturbation effects of the new CFR-PEEK screws on radiotherapy dose distributions and to evaluate these effects in comparison with traditional titanium screws...
March 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28296167/what-can-intracoronary-pressure-measurements-tell-us-about-flow-reserve-pressure-bounded-coronary-flow-reserve-and-example-application-to-the-randomized-defer-trial
#5
Frederik M Zimmermann, Nico H J Pijls, Bernard De Bruyne, G Jan-Willem Bech, Pepijn van Schaardenburgh, Richard L Kirkeeide, K Lance Gould, Nils P Johnson
OBJECTIVE: We propose a novel technique called pressure-bounded coronary flow reserve (pb-CFR) and demonstrate its application to the randomized DEFER trial. BACKGROUND: Intracoronary flow reserve assessment remains underutilized relative to pressure measurements partly due to less robust tools. METHODS: While rest and hyperemic intracoronary pressure measurements cannot quantify CFR exactly, they do provide upper and lower bounds. We validated pb-CFR invasively against traditional CFR, then applied it to high fractional flow reserve (FFR ≥ 0...
March 15, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28294860/-coronary-flow-reserve-in-the-left-anterior-and-posterior-descending-arteries-as-an-additional-option-to-dipyridamole-stress-echocardiography-for-detection-of-stenosis
#6
A A Boshchenko, A V Vrublevsky, R S Karpov
AIM: to assess additive diagnostic value of simultaneous evaluation of coronary flow reserve (CFR) in the left anterior descending (LAD) artery and posterior descending artery (PDA) during dipyridamole stress echocardiography (stress-Echo) for detection of LAD and PDA stenoses >50%. METHODS: 108 in-patients (mean age 50+/-11 years) with cardiac chest pain underwent dipyridamole stress-Echo with ECG-analysis, wall motion analysis by 2-dimentional imaging (2D) and coronary flow reserve (CFR) evaluation in both LAD and PDA by pulse-wave Doppler...
April 2016: Kardiologiia
https://www.readbyqxmd.com/read/28293706/coronary-atherosclerotic-burden-vs-coronary-vascular-function-in-diabetic-and-nondiabetic-patients-with-normal-myocardial-perfusion-a-propensity-score-analysis
#7
Roberta Assante, Wanda Acampa, Emilia Zampella, Parthiban Arumugam, Carmela Nappi, Valeria Gaudieri, Mariarosaria Panico, Mario Magliulo, Christine M Tonge, Mario Petretta, Alberto Cuocolo
PURPOSE: To assess the relationship between coronary atherosclerotic burden and vascular function in diabetic and nondiabetic patients after balancing for coronary risk factors. METHODS: We studied 672 patients without overt coronary artery disease and normal myocardial perfusion on stress (82)Rb PET/CT imaging. To account for differences in baseline characteristics between diabetic patients and nondiabetic patients, we created a propensity score-matched cohort considering clinical variables and coronary risk factors...
March 14, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28293235/distribution-of-cfr-in-staphylococcus-spp-and-escherichia-coli-strains-from-pig-farms-in-china-and-characterization-of-a-novel-cfr-carrying-f43-a-b-plasmid
#8
Xiao-Qin Liu, Jing Wang, Wei Li, Li-Qing Zhao, Yan Lu, Jian-Hua Liu, Zhen-Ling Zeng
The multi-resistance gene cfr is widely distributed among various gram-positive and gram-negative species in livestock in China. To better understand the epidemiology of cfr among Staphylococcus spp. and E. coli isolates, 254 Staphylococcus spp. and 398 E. coli strains collected from six swine farms in China were subjected to prevalence and genetic analysis. Forty (15.7%) Staphylococcus spp. isolates, including 38 Staphylococcus sciuri strains, one Staphylococcus chromogenes strain, and one Staphylococcus lentus strain, and two (0...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28290842/-serial-assessment-of-transthoracic-coronary-flow-reserve-as-method-of-assessing-efficacy-of-intracoronary-intervention-in-the-left-anterior-and-posterior-descending-arteries
#9
A A Boshchenko, A V Vrublevsky, R S Karpov
Transthoracic echocardiography (TTE) has been described as an accurate technique for noninvasive evaluation of coronary flow reserve (CFR) of the left anterior descending artery (LAD) and posterior descending artery (PDA). Aim of this study was to find out whether serial measurement of CFR in LAD and PDA using TTE allows detection of stenosis elimination after intracoronary intervention and is a marker of successful procedure. METHODS: The study group comprised 14 patients with single-vessel coronary disease (stenosis 82+/-14%) of the LAD (9 patients) or right coronary artery (RCA, 5 patients) scheduled for stent implantation...
June 2016: Kardiologiia
https://www.readbyqxmd.com/read/28288154/epidemiology-of-cholera-outbreaks-and-socio-economic-characteristics-of-the-communities-in-the-fishing-villages-of-uganda-2011-2015
#10
Godfrey Bwire, Aline Munier, Issaka Ouedraogo, Leonard Heyerdahl, Henry Komakech, Atek Kagirita, Richard Wood, Raymond Mhlanga, Berthe Njanpop-Lafourcade, Mugagga Malimbo, Issa Makumbi, Jennifer Wandawa, Bradford D Gessner, Christopher Garimoi Orach, Martin A Mengel
BACKGROUND: The communities in fishing villages in the Great Lakes Region of Africa and particularly in Uganda experience recurrent cholera outbreaks that lead to considerable mortality and morbidity. We evaluated cholera epidemiology and population characteristics in the fishing villages of Uganda to better target prevention and control interventions on cholera and contribute to its elimination from those communities. METHODOLOGY/PRINCIPAL FINDINGS: We conducted a prospective study between 2011-15 in fishing villages in Uganda...
March 13, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28284617/detection-of-novel-oxazolidinone-and-phenicol-resistance-gene-optra-in-enterococcal-isolates-from-food-animals-and-animal-carcasses
#11
Migma Dorji Tamang, Dong Chan Moon, Su-Ran Kim, Hee Young Kang, Kichan Lee, Hyang-Mi Nam, Geum-Chan Jang, Hee-Soo Lee, Suk-Chan Jung, Suk-Kyung Lim
Altogether 7720 Enterococcus faecalis and 3939 E. faecium isolated from food animals and animal carcasses during 2003-2014 in Korea were investigated to determine if linezolid-resistant (LR) enterococci (≥8μg/ml) are present. Overall, 12 E. faecalis and 27 E. faecium recovered from chickens (n=32), pigs (n=6), and cattle (n=1) were resistant to linezolid and were further characterized using molecular methods Most LR isolates were also resistant to chloramphenicol (97.44%) and florfenicol (92.31%). Molecular analysis showed no mutations in the 23S ribosomal RNA and in the ribosomal protein L3...
March 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28284608/characterization-of-pig-associated-methicillin-resistant-staphylococcus-aureus
#12
Jun Li, Nansong Jiang, Yuebin Ke, Andrea T Feßler, Yang Wang, Stefan Schwarz, Congming Wu
Livestock-associated methicillin-resistant Staphylococcus aureus (LA-MRSA) have been reported in various countries worldwide. However, although China is one of the biggest pig and pork producers, large-scale studies on pig-associated LA-MRSA from China are scarce. The aims of this study were to analyze 2420 non-duplicate samples collected from pigs at swine farms and slaughterhouses in different regions in China during 2014 for the prevalence of pig-associated MRSA and to determine the antimicrobial resistance pheno- and genotypes of the respective isolates...
March 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28282433/the-cause-specific-morbidity-and-mortality-and-referral-patterns-of-all-neonates-admitted-to-a-tertiary-referral-hospital-in-the-northern-provinces-of-vietnam-over-a-one-year-period
#13
Merinda Miles, Khu Thi Khanh Dung, Le Thi Ha, Nguyen Thanh Liem, Khu Ha, Rod W Hunt, Kim Mulholland, Chris Morgan, Fiona M Russell
OBJECTIVE: To describe the cause-specific morbidity and mortality, and referral patterns of all neonates admitted to a tertiary referral hospital in the northern provinces of Vietnam. DESIGN: A prospective hospital based observational study. SETTING: The Neonatal Department, National Hospital of Pediatrics, Hanoi, Vietnam. PATIENTS: All admissions to the Neonatal Department over a 12 month period. MAIN OUTCOME MEASURES: Cause-specific morbidity and mortality; deaths...
2017: PloS One
https://www.readbyqxmd.com/read/28274200/spatial-turnover-in-host-plant-availability-drives-host-associated-divergence-in-a-south-african-leafhopper-cephalelus-uncinatus
#14
Willem J Augustyn, Bruce Anderson, Jeroen F van der Merwe, Allan G Ellis
BACKGROUND: The evolution of reproductive isolation between herbivorous insect populations is often initiated by shifts to novel host-plants, a process that underlies some of the best examples of ecological speciation. However, it is not well understood why host-shifts occur. Arguably the most common hypothesis is that host-shifts occur in response to competition, while a less frequently invoked hypothesis is that herbivores adapt locally to geographic differences in potential host-plant communities...
March 9, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28273867/comparative-epidemiology-of-human-fatal-infections-with-novel-high-h5n6-and-h5n1-and-low-h7n9-and-h9n2-pathogenicity-avian-influenza-a-viruses
#15
Zu-Qun Wu, Yi Zhang, Na Zhao, Zhao Yu, Hao Pan, Ta-Chien Chan, Zhi-Ruo Zhang, She-Lan Liu
This study aimed to assess the mortality risks for human infection with high (HPAI) and low (LPAI) pathogenicity avian influenza viruses. The HPAI case fatality rate (CFR) was far higher than the LPAI CFR [66.0% (293/444) vs. 68.75% (11/16) vs. 40.4% (265/656) vs. 0.0% (0/18) in the cases with H5N1, H5N6, H7N9, and H9N2 viruses, respectively; p < 0.001]. Similarly, the CFR of the index cases was greater than the secondary cases with H5N1 [100% (43/43) vs. 43.3% (42/97), p < 0.001]. Old age [22.5 vs. 17 years for H5N1, p = 0...
March 4, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28248431/resistance-to-cyclic-fatigue-of-pathfile-scoutrace-and-proglider-glide-path-files-in-an-s-shaped-canal
#16
H S Topçuoğlu, G Topçuoğlu, S Düzgün
AIM: To compare the cyclic fatigue resistance (CFR) of PathFile, ProGlider, and ScoutRaCe nickel-titanium (NiTi) rotary instruments used in an S-shaped artificial canal. METHODOLOGY: A total of 90 instruments were tested in an S-shaped artificial canal (n = 30 for each group: PathFile (size 16, 2% constant taper), ProGlider (size 16, variable taper between 2% and 8% along the shaft), and ScoutRaCe (size 15, 2% constant taper). All files were rotated until fracture...
March 1, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28245882/development-of-a-surrogate-potency-assay-to-determine-the-angiogenic-activity-of-stempeucel%C3%A2-a-pooled-ex-vivo-expanded-allogeneic-human-bone-marrow-mesenchymal-stromal-cell-product
#17
Charan Thej, Balamurugan Ramadasse, Ankita Walvekar, Anish S Majumdar, Sudha Balasubramanian
BACKGROUND: Mesenchymal stromal cells (MSCs) have emerged as a more beneficial alternative to conventional therapy and may offer a potential cure for unmet medical needs. MSCs are known to possess strong immunomodulatory and anti-inflammatory properties. Moreover, they promote angiogenesis and tissue regeneration through the secretion of trophic factors. For these reasons, the past decade witnessed a sharp increase in the number of clinical trials conducted with stem cells for various vascular diseases requiring angiogenesis...
February 28, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28241752/distal-radius-plate-of-cfr-peek-has-minimal-effect-compared-to-titanium-plates-on-bone-parameters-in-high-resolution-peripheral-quantitative-computed-tomography-a-pilot-study
#18
Joost J A de Jong, Arno Lataster, Bert van Rietbergen, Jacobus J Arts, Piet P Geusens, Joop P W van den Bergh, Paul C Willems
BACKGROUND: Carbon-fiber-reinforced poly-ether-ether-ketone (CFR-PEEK) has superior radiolucency compared to other orthopedic implant materials, e.g. titanium or stainless steel, thus allowing metal-artifact-free postoperative monitoring by computed tomography (CT). Recently, high-resolution peripheral quantitative CT (HRpQCT) proved to be a promising technique to monitor the recovery of volumetric bone mineral density (vBMD), micro-architecture and biomechanical parameters in stable conservatively treated distal radius fractures...
February 27, 2017: BMC Medical Imaging
https://www.readbyqxmd.com/read/28236250/group-b-streptococcal-disease-in-infants-in-the-first-year-of-life-a-nationwide-surveillance-study-in-japan-2011-2015
#19
Kousaku Matsubara, Kiyoshi Hoshina, Masatoshi Kondo, Isao Miyairi, Yoshiya Yukitake, Yusuke Ito, Kisei Minami, Ryuichi Genkawa
PURPOSE: This study aimed to describe the epidemiology of childhood group B streptococcus (GBS) disease including late late-onset disease (LLOD) and to clinically characterize recurrent cases and twin-sibling cases in Japan. METHODS: We collected information on infants (<1 year of age) with invasive GBS disease and institutional information about births and transfers through a nationwide questionnaire between 2011 and 2015. RESULTS: We identified 133 infants with early-onset disease (EOD), 274 late-onset disease (LOD), and 38 LLOD from 149 institutes...
February 25, 2017: Infection
https://www.readbyqxmd.com/read/28223175/high-fatality-rates-and-associated-factors-in-two-hospital-outbreaks-of-mers-in-daejeon-the-republic-of-korea
#20
Hae-Sung Nam, Jung Wan Park, Moran Ki, Mi-Yeon Yeon, Jin Kim, Seung Woo Kim
OBJECTIVES: To explore the epidemiological and clinical factors predictive of the case fatality rate (CFR) of Middle East respiratory syndrome-coronavirus (MERS-CoV) infection in an outbreak in Daejeon, the Republic of Korea. METHODS: We reviewed the outbreak investigation reports and medical records of 1 index case and 25 additional MERS cases in hospitals A (14 cases) and B (11 cases), and conducted an in-depth interview with the index case. RESULTS: The CFR in hospital B was higher than that in hospital A (63...
February 18, 2017: International Journal of Infectious Diseases: IJID
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