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https://www.readbyqxmd.com/read/29674825/influence-of-different-resin-cements-and-surface-treatments-on-microshear-bond-strength-of-zirconia-based-ceramics
#1
Anderson Petrauskas, Karina Andrea Novaes Olivieri, Yasmine Mendes Pupo, Guilherme Berger, Ederson Áureo Gonçalves Betiol
Aim: This study aims to evaluate the microshear bond strength of zirconia-based ceramics with different resin cement systems and surface treatments. Materials and Methods: Forty blocks of zirconia-based ceramic were prepared and embedded in polyvinyl chloride (PVC) tubes with acrylic resin. After polishing, the samples were washed in an ultrasonic bath and dried in an oven for 10 min. Half of the samples were subjected to sandblasting with aluminum oxide. Blocks were divided into four groups ( n = 10) in which two resin cements were used as follows: (1) RelyX™ U100 with surface-polished zirconia; (2) RelyX™ U100 with surface-blasted zirconia; (3) Multilink with surface-polished zirconia; and 4) Multilink with surface-blasted zirconia...
March 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29663425/experimental-investigation-of-linac-angles-and-floor-scatter-dose-contributions-using-cherenkov-imaging-improving-total-skin-electron-therapy-treatment-geometries
#2
Jacqueline M Andreozzi, Petr Brůža, Irwin I Tendler, Karen E Mooney, Lesley A Jarvis, Jochen Cammin, Harold Li, Brian W Pogue, David J Gladstone
PURPOSE: The purpose of this study was to identify the optimal treatment geometry for total skin electron therapy (TSET) using a new optimization metric from Cherenkov image analysis, and to investigate the sensitivity of the Cherenkov imaging method to floor scatter effects in this unique treatment setup. METHODS: Cherenkov imaging using an intensified charge coupled device (ICCD) was employed to measure the relative surface dose distribution as a 2D image in the total skin electron treatment plane...
April 16, 2018: Medical Physics
https://www.readbyqxmd.com/read/29644990/distraction-technique-for-pain-reduction-in-peripheral-venous-catheterization-randomized-controlled-trial
#3
Ihor Balanyuk, Giuseppina Ledonne, Marco Provenzano, Roberto Bianco, Cristina Meroni, Paola Ferri, Loris Bonetti
BACKGROUND AND AIM OF THE WORK: Procedural pain during Peripheral Venous Catheterization (PVC) is a significant issue for patients. Reducing procedure-induced pain improves the quality of care and reduces patient discomfort. We aimed to compare a non-pharmacological technique (distraction) to anaesthetic cream (EMLA) for the reduction of procedural pain during PVC, in patients undergoing Computerized Tomography (CT) or Nuclear Magnetic Resonance (NMR) with contrast. METHODS: This is a Prospective, Randomized Controlled Trial...
February 21, 2018: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/29573617/anti-arrhythmogenic-and-anti-inflammatory-effects-of-troxerutin-in-ischemia-reperfusion-injury-of-diabetic-myocardium
#4
Moslem Najafi, Elham Noroozi, Aniseh Javadi, Reza Badalzadeh
INTRODUCTION: Medicinal plants are increasingly used in the treatment of cardiovascular diseases due to their multifaceted properties. This study was designed to investigate anti-arrhythmic and anti-inflammatory potentials of the natural bioflavonoid, troxerutin (TXR) in myocardial ischemia/reperfusion (I/R) injury in diabetic rats. METHODS: Male Wistar rats were randomly divided into 4 groups (control, control + TXR [150 mg/kg, daily], diabetic, and diabetic + TXR)...
March 21, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29572085/ablation-strategies-for-the-management-of-symptomatic-brugada-syndrome-a-systematic-review
#5
Gilson C Fernandes, Amanda Fernandes, Rhanderson Cardoso, Guilherme Nasi, Manuel Rivera, Raul D Mitrani, Jeffrey J Goldberger
BACKGROUND: Ablation approaches have been described for the management of symptomatic ventricular arrhythmias in patients with Brugada syndrome, but this treatment is still considered experimental. OBJECTIVE: We aimed to perform a systematic review of the current evidence regarding the use of catheter ablation in Brugada syndrome. METHODS: MEDLINE, Embase and Scopus were searched for articles describing the use of catheter ablation for ventricular arrhythmia management in Brugada syndrome...
March 20, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29493182/the-pubovesical-complex-sparing-technique-on-laparoscopic-radical-prostatectomy
#6
Rafael Batista Rebouças, Rodrigo Campos Monteiro, João Paulo Pereira Lima, Filipe Pádua B F Almeida, Cesar Araujo Britto, Marcos Tobias-Machado, Carlo Passerotti
INTRODUCTION: Preservation of urinary continence is a great challenge in Radical Prostatectomy. In order to improve functional results, Asimakopoulos et al. (2010) described a robot-assisted surgical technique with preservation of the pubovesical complex (PVC). We present a pure laparoscopic execution. PRESENTATION: A 61-year-old male patient with a diagnosis of prostate cancer, with PSA 6.54ng/ml, DRE: T1C and Gleason 6 (3+3) 1/12 fragments. All therapeutic possibilities were discussed, including active surveillance...
March 1, 2018: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/29478174/efficacy-of-advanced-pace-mapping-technology-for-idiopathic-premature-ventricular-complexes-ablation
#7
J Fedida, T Strisciuglio, M Sohal, M Wolf, K Van Beeumen, A Neyrinck, P Taghji, C Lepiece, A Almorad, Y Vandekerckhove, R Tavernier, M Duytschaever, S Knecht
PURPOSE: Catheter ablation is an effective treatment for premature ventricular complexes (PVCs). Activation mapping is accurate but requires PVCs at the time of the ablation. Pace-mapping correlation (PMC) is a supplemental tool recently developed as an integrated module for an electro-anatomical mapping platform. Our study sought to investigate whether pace-mapping technology provides similar ablation results in patients with low versus high idiopathic PVC burden at the time of ablation and the relationship between sites with the highest PMC and the earliest local activation time (LAT)...
April 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29455145/heavy-metals-dispersion-during-thermal-treatment-of-plastic-bags-and-its-recovery
#8
Ohidul Alam, Sijia Wang, Wentao Lu
One of the main worries for thermal treatment of plastic bag (PB) is the air pollution resulting from heavy metal (HM) evaporation and emission. The quest of the study was to investigate their fate during thermal treatment varying with temperature and atmosphere to explore the appropriate treatment technology. Four commonly consumed polymer bags such as PE, HDPE, LDPE and PVC were selected for the analysis. The elemental compositions, heating values and total metal contents of the samples were measured by an elemental analyzer, a sulphur/halogen analyzer, a bomb calorimeter and an ICP-OES, respectively...
April 15, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29414368/effects-of-imidacloprid-on-the-ecology-of-sub-tropical-freshwater-microcosms
#9
Kizar Ahmed Sumon, Afifat Khanam Ritika, Edwin T H M Peeters, Harunur Rashid, Roel H Bosma, Md Shahidur Rahman, Mst Kaniz Fatema, Paul J Van den Brink
The neonicotinoid insecticide imidacloprid is used in Bangladesh for a variety of crop protection purposes. Imidacloprid may contaminate aquatic ecosystems via spray drift, surface runoff and ground water leaching. The present study aimed at assessing the fate and effects of imidacloprid on structural (phytoplankton, zooplankton, macroinvertebrates and periphyton) and functional (organic matter decomposition) endpoints of freshwater, sub-tropical ecosystems in Bangladesh. Imidacloprid was applied weekly to 16 freshwater microcosms (PVC tanks containing 400 L de-chlorinated tap water) at nominal concentrations of 0, 30, 300, 3000 ng/L over a period of 4 weeks...
May 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29405947/class-ic-antiarrhythmic-drugs-for-suspected-premature-ventricular-contraction-induced-cardiomyopathy
#10
Matthew C Hyman, Danielle Mustin, Gregory Supple, Robert D Schaller, Pasquale Santangeli, Jeffrey Arkles, David Lin, Daniele Muser, Sanjay Dixit, Saman Nazarian, Andrew E Epstein, David J Callans, Francis E Marchlinski, David S Frankel
BACKGROUND: Class IC antiarrhythmic drugs (IC-AADs) can effectively suppress premature ventricular contractions (PVCs). However, IC-AADs increase mortality in patients with PVCs and left ventricular dysfunction after myocardial infarction. Whether IC-AADs can be safely used to treat premature ventricular contraction-induced cardiomyopathy (PVC-CM) remains to be established. OBJECTIVE: The purpose of this study was to determine the safety and efficacy of IC-AADs in patients suspected of having PVC-CM...
February 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29399586/a-case-of-myocarditis-and-near-lethal-arrhythmia-associated-with-interleukin-2-therapy
#11
Stephanie Wu, Anna Sarcon, Khuyen Do, Jerold Shinbane, Rahul Doshi, Helga Van Herle
We present a case of a 48-year-old female who developed myocarditis and near fatal arrhythmias during high dose Il-2 therapy for metastatic renal cancer. On day 5 of therapy, the patient developed sudden onset chest pain, elevated cardiac enzymes and ST segment changes on EKG. Coronary angiogram was normal, however echocardiogram showed reduced ejection fraction and hemodynamic measurements showed elevated bilateral elevated filling pressures. The patient then developed episodes of recurrent ventricular arrhythmia, precipitated by bradycardia and PVC, requiring defibrillation and temporary pacemaker placement...
January 2018: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/29351206/antibody-biomimetic-material-made-of-pyrrole-for-ca-15-3-and-its-application-as-sensing-material-in-ion-selective-electrodes-for-potentiometric-detection
#12
Alexandra R T Santos, Felismina T C Moreira, Luísa A Helguero, M Goreti F Sales
This work reports a very simple approach for creating a synthetic antibody against any protein of interest and its application in potentiometric transduction. The selected protein was Breast Cancer Antigen (CA 15-3), which is implicated in breast cancer disease and used to follow-up breast cancer patients during treatment. The new material with antibody-like properties was obtained by molecular-imprinting technology, prepared by electropolymerizing pyrrol (Py, 5.0 × 10-3 mol/L) around Breast Cancer Antigen (CA 15-3) (100 U/mL) on a fluorine doped tin oxide (FTO) conductive glass support...
January 19, 2018: Biosensors
https://www.readbyqxmd.com/read/29326827/premature-ventricular-contraction-induced-cardiomyopathy
#13
David J Callans
Premature ventricular contractions (PVCs) are very common and usually do not require treatment. However, in the clinical setting of troublesome symptoms, or when PVCs trigger polymorphic ventricular tachycardia or cause cardiomyopathy, proper treatment is critical. In this review, the clinical syndrome of PVC-induced cardiomyopathy, including risk factors for development and treatment, is discussed. Although PVC-induced cardiomyopathy is typically associated with frequent PVCs there are also patients with this burden that do not develop cardiomyopathy, suggesting a differential susceptibility...
December 2017: Arrhythmia & Electrophysiology Review
https://www.readbyqxmd.com/read/29314486/temperature-sensitivity-of-soil-organic-carbon-decomposition-increased-with-mean-carbon-residence-time-field-incubation-and-data-assimilation
#14
Xuhui Zhou, Xia Xu, Guiyao Zhou, Yiqi Luo
Temperature sensitivity of soil organic carbon (SOC) decomposition is one of the major uncertainties in predicting climate-carbon (C) cycle feedback. Results from previous studies are highly contradictory with old soil C decomposition being more, similarly, or less sensitive to temperature than decomposition of young fractions. The contradictory results are partly from difficulties in distinguishing old from young SOC and their changes over time in the experiments with or without isotopic techniques. In this study, we have conducted a long-term field incubation experiment with deep soil collars (0-70 cm in depth, 10 cm in diameter of PVC tubes) for excluding root C input to examine apparent temperature sensitivity of SOC decomposition under ambient and warming treatments from 2002 to 2008...
February 2018: Global Change Biology
https://www.readbyqxmd.com/read/29277286/the-relationship-between-the-s-wave-in-lead-1-and-recurrence-of-rvot-pvc-ablation
#15
Hacı Murat Güneş, Gültekin Günhan Demir, Oğuz Karaca, Filiz Kızılırmak Yılmaz, Ersin İbişoğlu, Tayyar Gökdeniz, Mehmet Onur Omaygenç, Ekrem Güler, Gamze Babur Güler, Ümeyir Savur, Beytullah Çakal, İrfan Barutçu, Fethi Kılıçaslan
BACKGROUND: Radiofrequency catheter ablation (CA) is a common non-pharmacological treatment option for ventricular premature contractions (PVCs) originating from right ventricular outflow tract (RVOT). In this study, we aimed to investigate the relationship between recurrence after CA for RVOT-PVC and S-wave in lead 1 that was shown to be associated with RVOT depolarization. METHODOLOGY: A total of 104 patients who were referred to our clinic for CA for idiopathic RVOT-PVC between 2012 and 2015years were enrolled...
December 14, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29137761/ultrasound-assisted-surface-treatment-of-zro-2-with-bsa-and-incorporating-in-pvc-to-improve-the-properties-of-the-obtained-nanocomposites-fabrication-and-characterization
#16
Shadpour Mallakpour, Zahra Hajjari
This paper describes the preparation of poly(vinyl chloride) (PVC) nanocomposites (NCs) reinforced with modified zirconia (ZrO2 ) nanoparticles (NPs). The ZrO2 NPs were defined as efficient filler for PVC NCs. For achieving the best dispersion and improvement of properties, the surface of ZrO2 NPs was modified by Bovine Serum Albumin (BSA). Carboxylic acids and amines are important functional groups of BSA which handle the grafting BSA on the surface of ZrO2 NPs. The PVC/ZrO2 -BSA NCs were fabricated by incorporation of various amounts of the ZrO2 -BSA NPs (3, 6 and 9wt%) into PVC matrix...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29110979/complications-from-administration-of-vasopressors-through-peripheral-venous-catheters-an-observational-study
#17
Kamal Medlej, Amin Antoine Kazzi, Ahel El Hajj Chehade, Mothana Saad Eldine, Ali Chami, Rana Bachir, Dina Zebian, Gilbert Abou Dagher
BACKGROUND: The placement of a central venous catheter for the administration of vasopressors is still recommended and required by many institutions because of concern about complications associated with peripheral administration of vasopressors. OBJECTIVE: Our aim was to determine the incidence of complications from the administration of vasopressors through peripheral venous catheters (PVC) in patients with circulatory shock, and to identify the factors associated with these complications...
January 2018: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29108004/direct-and-indirect-effects-of-different-types-of-microplastics-on-freshwater-prey-corbicula-fluminea-and-their-predator-acipenser-transmontanus
#18
Chelsea M Rochman, J Mark Parnis, Mark A Browne, Sebastian Serrato, Eric J Reiner, Matthew Robson, Thomas Young, Miriam L Diamond, Swee J Teh
We examined whether environmentally relevant concentrations of different types of microplastics, with or without PCBs, directly affect freshwater prey and indirectly affect their predators. Asian clams (Corbicula fluminea) were exposed to environmentally relevant concentrations of polyethylene terephthalate (PET), polyethylene, polyvinylchloride (PVC) or polystyrene with and without polychlorinated biphenyls (PCBs) for 28 days. Their predators, white sturgeon (Acipenser transmontanus), were exposed to clams from each treatment for 28 days...
2017: PloS One
https://www.readbyqxmd.com/read/29068742/experiences-of-peripheral-iv-insertion-in-hospital-a-qualitative-study
#19
Emily Larsen, Samantha Keogh, Nicole Marsh, Claire Rickard
Adult medical and surgical patients admitted to tertiary hospitals regularly have peripheral venous catheters (PVCs) inserted for their treatment. Anecdotally, patients report varying levels of pain and anxiety during the insertion procedure; however, lived experiences of patients are not well documented in the literature. The aim of this study was to gain an understanding of patients' experiences of PVC insertion. Some 10 participants were purposively sampled for semi-structured interviews, from the medical and surgical wards at a tertiary hospital in Queensland, Australia...
October 26, 2017: British Journal of Nursing: BJN
https://www.readbyqxmd.com/read/29064791/effect-of-quercetin-on-parameters-of-central-hemodynamics-and-myocardial-ischemia-in-patients-with-stable-coronary-heart-disease
#20
RANDOMIZED CONTROLLED TRIAL
Natalia I Chekalina, Svitlana V Shut, Tetiana A Trybrat, Yurii H Burmak, Yeuhen Ye Petrov, Yulia I Manusha, Yurii M Kazakov
THE AIM: The aim of our research was to study the effect of quercetin on parameters of central hemodynamics and myocardial ischemia in patients with stable coronary heart disease (CHD). MATERIAL AND METHODS: The research involved 85 patients with CHD: stable angina pectoris, FC II, and 30 healthy individuals made up the control group. After 1.5 months of stabilizing therapy (ß-blockers, statins, aspirin) patients with CHD were randomized into 2 groups - the research group (30 people) and the comparison group (55 people)...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
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