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https://www.readbyqxmd.com/read/28422337/in-vivo-validation-of-a-novel-algorithm-for-automatic-premature-ventricular-contractions-recognition
#1
Jedrzej Kosiuk, Guilherme Portugal, Sebastian Hilbert, Silke John, Mario Oliveira, Gerhard Hindricks, Andreas Bollmann
INTRODUCTION: Template-matching algorithms are routinely used in the catheter ablation of patients with premature ventricular contractions (PVCs). However, systematic analysis of the accuracy and spatial resolution of such systems is lacking. Therefore, the aim of this evaluation was to perform a systematic in-vivo validation of performance of a novel automated template-matching algorithm. METHODS AND RESULTS: In a porcine model, paced beats simulating PVCs from different origins were investigated...
April 19, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28419339/effect-of-chlorine-treatment-on-inhibition-of-e-coli-serogroup-o2-incorporation-into-7-day-old-biofilm-on-polyvinylchloride-surface
#2
P Maharjan, S Dey, G Huff, W Zhang, G K Phillips, S Watkins
Poultry waterlines are constructed using polyvinylchloride (PVC) material on which bacterial biofilm can easily form. Biofilm can harbor pathogens including avian pathogenic E. coli (APEC) strains. An in vitro evaluation was performed to determine if E. coli sero group O2 (avian pathogenic) could attach on a PVC surface that had pre-formed biofilm and if this phenomenon could be affected when water was treated with chlorine. Initially, biofilm growth was induced in PVC test coupons (15.16 cm2) for a 7-day period mimicking the waterline scenario in the first wk of poultry brooding; and then this biofilm was challenged with E...
April 17, 2017: Poultry Science
https://www.readbyqxmd.com/read/28400158/a-novel-process-for-separation-of-polycarbonate-polyvinyl-chloride-and-polymethyl-methacrylate-waste-plastics-by-froth-flotation
#3
Chong-Qing Wang, Hui Wang, Luo-Luo Huang
A novel process was proposed for separation of ternary waste plastics by froth flotation. Pretreatment of plastics with potassium permanganate (KMnO4) solution was conducted to aid flotation separation of polycarbonate (PC), polyvinyl chloride (PVC) and polymethyl methacrylate (PMMA) plastics. The effect of pretreatment parameters including KMnO4 concentration, treatment time, temperature and stirring rate on flotation recovery were investigated by single factor experiments. Surface treatment with KMnO4 changes selectively the flotation behavior of PC, PVC and PMMA, enabling separation of the plastics by froth flotation...
April 8, 2017: Waste Management
https://www.readbyqxmd.com/read/28394198/dechlorination-of-pvc-wastes-by-co-hydrothermal-treatment-with-alkaline-additives
#4
Peitao Zhao, Tian Li, Weijie Yan, Longji Yuan
Some chemicals were usually utilized in the hydrothermal dechlorination (HTD) of chlorine-containing wastes without revealing their roles. This work intends to investigate the role of chemical additives in the HTD of PVC (polyvinyl chloride). Several chemicals, including Na2CO3, KOH, NaOH, NH3·H2O, CaO and NaHCO3, were added into the PVC HTD process, which was conducted in subcritical Ni(2+)-containing water at 220 °C for 30 min. The results show the alkalinity of additives had notable effects on the dechlorination efficiency (DE) of PVC due to the neutralization between HCl and additives...
April 10, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28391408/informativeness-of-patient-initial-reports-of-adverse-drug-reactions-can-it-be-improved-by-a-pharmacovigilance-centre
#5
F Kheloufi, A Default, F Rouby, D Laugier-Castellan, M Boyer, B Rodrigues, J Ponte-Astoul, M J Jean-Pastor, O Blin, J Micallef
PURPOSE: Little is known about the informativeness of initial patient reports before they are reviewed by a pharmacovigilance centre (PVC). We aim to describe the patterns of patient adverse drug reaction (ADR) reporting in France and estimate the contribution of a review by a PVC assessor on the informativeness of these reports. METHODS: A retrospective study was conducted on patient reports between July 2011 and July 2015. Informativeness of 16 key elements of information (including drug start and end date, duration of treatment, time to onset and duration of the ADR, outcome, medical history and concomitant medication) was assessed in initial reports before and after review by a pharmacovigilance assessor...
April 8, 2017: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28339699/effects-of-chlorine-and-hydrogen-peroxide-sanitation-in-low-bacterial-content-water-on-biofilm-formation-model-of-poultry-brooding-house-waterlines
#6
P Maharjan, G Huff, W Zhang, S Watkins
An in vitro experiment was performed to determine if biofilm would develop when polyvinylchloride (PVC) test coupons (material used for poultry waterlines) were exposed to low bacterial content warm water (≤1000 cfu/mL, test water) and also to determine if biofilm development would be influenced by adding a sanitizer. PVC sections 2.54 cm long and internal diameter of 1. 90 cm were used as test coupons to grow biofilm. Two coupons were immersed in 600 mL test water in a beaker. Nine beakers were utilized similarly with a total of 18 coupons...
February 22, 2017: Poultry Science
https://www.readbyqxmd.com/read/28334182/evaluation-of-different-applications-of-ethanedinitrile-c2n2-in-various-fumigation-chambers-for-control-of-monochamus-alternatus-coleoptera-cerambycidae-in-naturally-infested-logs
#7
Byung-Ho Lee, Chung-Gyoo Park, Yonglin Ren
Monochamus alternatus Hopeis is an important vector of nematode pests of timber in Korea, particularly Bursaphelenchus xylophilus (Steiner & Buhrer) Nickle. Previously, we reported that ethanedinitrile (C2N2) has the potential to replace methyl bromide and metam sodium to control M. alternatus larvae and B. xylophilus under low-temperature (<5 °C) conditions. Herein, we report on fumigation trials of C2N2 over a 3-yr period (February 2013-October 2015) conducted at higher temperatures. The trials were conducted under 24 different conditions that incorporated varying fumigation chamber types (plastic sheeting-enclosed chambers of differing construction or an ISO shipping container, interior size: 5...
April 1, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28326823/tp-e-interval-and-tp-e-qt-ratio-before-and-after-catheter-ablation-in-patients-with-premature-ventricular-complexes
#8
Çağrı Yayla, Fırat Özcan, Dursun Aras, Osman Turak, Özcan Özeke, Serkan Çay, Serkan Topaloğlu
AIM: Tp-e/QT ratio is a novel marker of ventricular repolarization. The aim of the study is to evaluate the Tp-e interval and Tp-e/QT ratio before and after radiofrequency ablation (RFA) for patients with frequent premature ventricular complexes (PVCs). PATIENTS & METHODS: The study included 151 consecutive patients who underwent RFA for treatment of symptomatic frequent PVCs. RESULTS: Tp-e interval, Tp-e/QT ratio and Tp-e/QTc ratio (all p < 0...
April 2017: Biomarkers in Medicine
https://www.readbyqxmd.com/read/28319286/a-successful-model-to-learn-and-implement-ultrasound-guided-venous-catheterization-in-apheresis
#9
Nigopan Gopalasingam, Anna-Marie Eller Thomsen, Lars Folkersen, Peter Juhl-Olsen, Erik Sloth
BACKGROUND: Apheresis treatments can be performed with peripheral venous catheters (PVC), although central venous catheters (CVC) are inserted when PVCs fail or patient with history of difficult vascular access prior to the apheresis. Ultrasound guidance for PVC has shown promising results in other settings. PURPOSE: To investigate if ultrasound guidance for PVC could be implemented among apheresis nurses. Second, how implementation of ultrasound guidance affected the number of CVCs used for apheresis per patient...
March 20, 2017: Journal of Clinical Apheresis
https://www.readbyqxmd.com/read/28317122/an-anthropomorphic-abdominal-phantom-for-deformable-image-registration-accuracy-validation-in-adaptive-radiation-therapy
#10
Yuliang Liao, Linjing Wang, Xiangdong Xu, Haibin Chen, Jiawei Chen, Guoqian Zhang, Huaiyu Lei, Ruihao Wang, Shuxu Zhang, Xuejun Gu, Xin Zhen, Linghong Zhou
PURPOSE: To design and construct a three-dimensional (3D) anthropomorphic abdominal phantom for geometric accuracy and dose summation accuracy evaluations of deformable image registration (DIR) algorithms for adaptive radiation therapy (ART). METHOD: Organ molds, including liver, kidney, spleen, stomach, vertebra and two metastasis tumors, were 3D printed using contours from an ovarian cancer patient. The organ molds were molded with deformable gels made of different mixtures of polyvinyl chloride (PVC) and the softener dioctyl terephthalate...
March 20, 2017: Medical Physics
https://www.readbyqxmd.com/read/28291915/room-scatter-effects-in-total-skin-electron-irradiation-monte-carlo-simulation-study
#11
Alexander Nevelsky, Egor Borzov, Shahar Daniel, Raquel Bar-Deroma
PURPOSE: Total Skin Electron Irradiation (TSEI) is a complex technique which usually involves the use of large electron fields and the dual-field approach. In this situation, many electrons scattered from the treatment room floor are produced. However, no investigations of the effect of scattered electrons in TSEI treatments have been reported. The purpose of this work was to study the contribution of floor scattered electrons to skin dose during TSEI treatment using Monte Carlo (MC) simulations...
January 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28287019/effect-of-prenatal-restraint-stress-and-morphine-co-administration-on-plasma-vasopressin-concentration-and-anxiety-behaviors-in-adult-rat-offspring
#12
Elnaz Nakhjiri, Ehsan Saboory, Shiva Roshan-Milani, Yousef Rasmi, Davod Khalafkhani
Stressful events and exposure to opiates during gestation have important effects on the later mental health of the offspring. Anxiety is among the most common mental disorders. The present study aimed to identify effects of prenatal restraint stress and morphine co-administration on plasma vasopressin concentration (PVC) and anxiety behaviors in rats. Pregnant rats were divided into four groups (n = 6, each): saline, morphine, stress + saline and stress + morphine treatment. The stress procedure consisted of restraint twice per day, two hours per session, for three consecutive days starting on day 15 of pregnancy...
March 28, 2017: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/28242924/effect-of-alternatives-to-chlorine-washing-for-sanitizing-fresh-coriander
#13
Haiyan Gao, Xiangjun Fang, Yunlong Li, Hangjun Chen, Qi Fa Zhao, Tony Z Jin
Fresh coriander leaves are highly perishable in nature and their sensory quality and nutritional value decreases without proper processing or preservation. In the present study, three aqueous solutions of sodium hypochlorite (SH, 100 mg/L), chlorine dioxide (CD, 10 mg/L), and sodium butyl p-hydroxybenzoate (SBPH, 12 mg/L), and tap water, were used to treat fresh coriander for 15 min. The treated samples were packed in PVC boxes with ambient air under packaged under passive modified atmosphere packaging conditions and stored at 4 °C for 10 days...
January 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28225874/experimental-burns-comparison-between-silver-sulfadiazine-and-photobiomodulation
#14
Mariana Teixeira Gomes, Gabriela Russo Soeiro Campos, Natália Piccolo, Cristiane Miranda França, Guelton Hirano Guedes, Fabio Lopes, Renata A Belotto, Christiane Pavani, Rafael do Nascimento de Lima, Daniela de Fátima Teixeira da Silva
OBJECTIVE: To analyze morphological characteristics and organization of the collagen fibers of third degree burns from scalding compared to laser therapy and silver sulfadiazine, the latter considered as the gold standard. METHOD: Were selected 12 animals (Rattus norvegicus) also divided into three groups (control group [CG] - untreated burns; sulfadiazine group [SG] - burns were treated with silver sulfadiazine at 1%; laser group [LG] - burns were treated with photobiomodulation)...
January 1, 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/28219298/microwave-assisted-surface-modification-for-the-separation-of-polycarbonate-from-polymethylmethacrylate-and-polyvinyl-chloride-waste-plastics-by-flotation
#15
Luoluo Huang, Hui Wang, Chongqing Wang, Junyao Zhao, Bo Zhang
Microwave-assisted potassium permanganate modification (MPPM) was used for the flotation separation of polycarbonate (PC) from polyvinyl chloride (PVC) and polymethylmethacrylate (PMMA) waste plastics. The separation process was optimized by investigating the potassium permanganate concentration, treatment time, flotation time and frother concentration. MPPM selectively reduced the flotation recovery of PC. The optimum conditions were determined to be: potassium permanganate concentration, 2 mM/L; treatment time, 1 min; frother concentration, 17...
March 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28130474/design-and-validation-of-the-gi-nec-score-to-prognosticate-overall-survival-in-patients-with-high-grade-gastrointestinal-neuroendocrine-carcinomas
#16
Angela Lamarca, Thomas Walter, Marianne Pavel, Ivan Borbath, Patricia Freis, Barbara Nuñez, Alexa Childs, Mairéad G McNamara, Richard A Hubner, Rocio Garcia-Carbonero, Tim Meyer, Juan W Valle, Jorge Barriuso
BACKGROUND: Prognostic markers for risk stratification of patients with gastrointestinal high-grade neuroendocrine carcinomas (GI-NECs) are lacking; we designed and validated a prognostic score for overall survival (OS). METHODS: Consecutive patients diagnosed in five neuroendocrine specialist European centers were included. Patients were divided into three cohorts: a training cohort (TC), an external validation cohort (EVC), and a prospective validation cohort (PVC)...
January 2017: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/28123973/imaging-of-venous-compression-syndromes
#17
REVIEW
Evan J Zucker, Suvranu Ganguli, Brian B Ghoshhajra, Rajiv Gupta, Anand M Prabhakar
Venous compression syndromes are a unique group of disorders characterized by anatomical extrinsic venous compression, typically in young and otherwise healthy individuals. While uncommon, they may cause serious complications including pain, swelling, deep venous thrombosis (DVT), pulmonary embolism, and post-thrombotic syndrome. The major disease entities are May-Thurner syndrome (MTS), variant iliac vein compression syndrome (IVCS), venous thoracic outlet syndrome (VTOS)/Paget-Schroetter syndrome, nutcracker syndrome (NCS), and popliteal venous compression (PVC)...
December 2016: Cardiovascular Diagnosis and Therapy
https://www.readbyqxmd.com/read/28089400/selective-sequential-separation-of-abs-hips-and-pvc-from-automobile-and-electronic-waste-shredder-residue-by-hybrid-nano-fe-ca-cao-assisted-ozonisation-process
#18
Srinivasa Reddy Mallampati, Byoung Ho Lee, Yoshiharu Mitoma, Cristian Simion
The separation of plastics containing brominated flame retardants (BFR) like (acrylonitrile-butadiene-styrene (ABS), high-impact polystyrene (HIPS), and polyvinyl chloride (PVC)) from automobile and electronic waste shredder residue (ASR/ESR) are a major concern for thermal recycling. In laboratory scale tests using a hybrid nano-Fe/Ca/CaO assisted ozonation treatment has been found to selectively hydrophilize the surface of ABS/HIPS and PVC plastics, enhancing ABS wettability and thereby promoting its separation from ASR/ESR by means of froth flotation...
January 12, 2017: Waste Management
https://www.readbyqxmd.com/read/28019045/autonomic-modulation-for-the-treatment-of-ventricular-arrhythmias-therapeutic-use-of-percutaneous-stellate-ganglion-blocks
#19
Marat Fudim, Richard Boortz-Marx, Chetan B Patel, Albert Y Sun, Jonathan P Piccini
Ventricular tachycardia (VT), ventricular fibrillation (VF), and electrical storm are commonly encountered emergency conditions in cardiac and surgical intensive care units. In most cases, recurrent ventricular arrhythmias or electrical storm are associated with a heightened sympathetic tone. These arrhythmias can be difficult to treat and may be refractory to beta-blockade, antiarrhythmic therapy, sedation, and mechanical hemodynamic support. While monomorphic ventricular tachycardia and PVC-triggered polymorphic ventricular tachycardia may sometimes be amenable to successful ablation, some patients may be too critically ill to make such an approach feasible...
April 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27988406/diabetes-impairs-arterio-venous-specification-in-engineered-vascular-tissues-in-a-perivascular-cell-recruitment-dependent-manner
#20
Wafa Altalhi, Xuetao Sun, Jeremy M Sivak, Mansoor Husain, Sara S Nunes
Cell-based tissue engineering is a potential treatment alternative for organ replacement. However, the lack of a robust vasculature, especially in the context of diseases such as diabetes, is a major hindrance to its success. Despite extensive research on the effects of diabetes in angiogenic sprouting, its effects on vessel arterio-venous (AV) specification have not been addressed. Using an engineered tissue that yields functional vessels with characteristic AV identities, we demonstrate that type 1 diabetes negatively affects vessel AV specification and perivascular cell (PVC) coverage...
March 2017: Biomaterials
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