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https://www.readbyqxmd.com/read/28445908/diagnosis-of-pulmonary-artery-embolism-comparison-of-single-source-ct-and-3rd-generation-dual-source-ct-using-a-dual-energy-protocol-regarding-image-quality-and-radiation-dose
#1
Bernhard Petritsch, Aleksander Kosmala, Tobias Gassenmaier, Andreas Max Weng, Simon Veldhoen, Andreas Steven Kunz, Thorsten Alexander Bley
Purpose To compare radiation dose, subjective and objective image quality of 3 rd generation dual-source CT (DSCT) and dual-energy CT (DECT) with conventional 64-slice single-source CT (SSCT) for pulmonary CTA. Materials and Methods 180 pulmonary CTA studies were performed in three patient cohorts of 60 patients each. Group 1: conventional SSCT 120 kV (ref.); group 2: single-energy DSCT 100 kV (ref.); group 3: DECT 90/Sn150 kV. CTDIvol, DLP, effective radiation dose were reported, and CT attenuation (HU) was measured on three central and peripheral levels...
April 26, 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28445816/disinfection-byproduct-formation-in-drinking-water-sources-a-case-study-of-yuqiao-reservoir
#2
Hongyan Zhai, Xizhen He, Yan Zhang, Tingting Du, Adeyemi S Adeleye, Yao Li
This study investigated the potential formation of disinfection byproducts (DBPs) during chlorination and chloramination of 20 water samples collected from different points of Yuqiao reservoir in Tianjin, China. The concentrations of dissolved organic matter and ammonia decreased downstream the reservoir, while the specific UV absorbance (SUVA: the ratio of UV254 to dissolved organic carbon) increased [from 0.67 L/(mg*m) upstream to 3.58 L/(mg*m) downstream]. The raw water quality played an important role in the formation of DBPs...
April 15, 2017: Chemosphere
https://www.readbyqxmd.com/read/28444683/-atypical-guillain-barre-syndrome-clustering-is-it-necessary-to-reconsider-the-diagnostic-criteria-and-microbiological-protocol
#3
A Dominguez-Mayoral, C Gutierrez, J M Lopez-Dominguez, S Eichau, J Abril, G Navarro-Mascarell, M A Quesada-Garcia, M Ramos, M Alvarez-Lopez, C Menendez-De Leon, G Izquierdo
INTRODUCTION: Guillain-Barre syndrome is classically defined as a symmetrical ascending acute polyradiculoneuropathy, although there are atypical variants that make diagnosis difficult. CASE REPORTS: The medical data of six patients in our hospital area are collected during the first quarter of 2013. Lumbar punctures, imaging, neurophysiological studies, ganglioside antibodies and serologies have been proposed in all cases. We focus on the atypical features as late hyporeflexia, increased frequency of asymmetry and distal paresis and initial fever...
May 1, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28444220/a-panel-study-on-patients-with-dominant-cerebellar-ataxia-highlights-the-frequency-of-channelopathies
#4
Marie Coutelier, Giulia Coarelli, Marie-Lorraine Monin, Juliette Konop, Claire-Sophie Davoine, Christelle Tesson, Rémi Valter, Mathieu Anheim, Anthony Behin, Giovanni Castelnovo, Perrine Charles, Albert David, Claire Ewenczyk, Mélanie Fradin, Cyril Goizet, Didier Hannequin, Pierre Labauge, Florence Riant, Pierre Sarda, Yves Sznajer, François Tison, Urielle Ullmann, Lionel Van Maldergem, Fanny Mochel, Alexis Brice, Giovanni Stevanin, Alexandra Durr
Autosomal dominant cerebellar ataxias have a marked heterogeneous genetic background, with mutations in 34 genes identified so far. This large amount of implicated genes accounts for heterogeneous clinical presentations, making genotype-phenotype correlations a major challenge in the field. While polyglutamine ataxias, linked to CAG repeat expansions in genes such as ATXN1, ATXN2, ATXN3, ATXN7, CACNA1A and TBP, have been extensively characterized in large cohorts, there is a need for comprehensive assessment of frequency and phenotype of more 'conventional' ataxias...
April 21, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28444046/health-care-networks-implementation-and-regional-governance-challenges-in-the-legal-amazon-region-an-analysis-of-the-qualisus-rede-project
#5
Angela Oliveira Casanova, Marly Marques Cruz, Ligia Giovanella, Glaydes Dos Reis Alves, Gisela Cordeiro Pereira Cardoso
This paper aims to analyze the potential, limits and challenges of regional governance in the implementation process of health care networks in three Brazilian regions: Alto Solimões (Amazonas), Belém (Pará) and an interstate region comprising Tocantins, Pará and Maranhão states (Topama). The study is based on the evaluation study on the implementation of the Quality Health Care Network Development and Improvement Project (QualiSUS-Rede). This is a qualitative multiple case study with the analysis of official documents and use of semi-structured interviews with key stakeholders conducted from July to December 2014...
April 2017: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/28443957/major-depression-and-acute-coronary-syndrome-related-factors
#6
Jose Henrique Cunha Figueiredo, Nelson Albuquerque de Souza E Silva, Basilio de Bragança Pereira, Glaucia Maria Moraes de Oliveira
BACKGROUND: Major Depressive Disorder (MDD) is one of the most common mental illnesses in psychiatry, being considered a risk factor for Acute Coronary Syndrome (ACS). OBJECTIVE: To assess the prevalence of MDD in ACS patients, as well as to analyze associated factors through the interdependence of sociodemographic, lifestyle and clinical variables. METHODS: Observational, descriptive, cross-sectional, case-series study conducted on patients hospitalized consecutively at the coronary units of three public hospitals in the city of Rio de Janeiro over a 24-month period...
March 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28443926/defect-induced-ferromagnetism-in-mgo-and-its-exceptional-enhancement-upon-thermal-annealing-a-case-of-transformation-of-various-defect-states
#7
Nimai Pathak, Santosh Kumar Gupta, C L Prajapat, S K Sharma, P S Ghosh, Buddhadev Kanrar, P K Pujari, R M Kadam
MgO particles of few micron size are synthesized through a sol-gel method at different annealing temperatures such as 600 °C (MgO-600), 800 °C (MgO-800) and 1000 °C (MgO-1000). EDX and ICP-AES studies confirmed a near total purity of the sample with respect to paramagnetic metal ion impurities. Magnetic measurements showed a low temperature weak ferromagnetic ordering with a TC (Curie temperature) around 65 K (±5 K). Unexpectedly, the saturation magnetization (Ms) was found to be increased with increasing annealing temperature during synthesis...
April 26, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28443905/predicting-oligomer-polymer-compatibility-and-the-impact-on-nanoscale-segregation-in-thin-films
#8
Elise F D Sabattié, Jos Tasche, Mark R Wilson, Maximilian W A Skoda, Arwel Hughes, Torsten Lindner, Richard L Thompson
Compatibility between oligomers and polymers was systematically assessed using differential scanning calorimetry (DSC) and was correlated with similarity in saturation and solubility parameter. These measurements enabled validation of detailed volume of mixing calculations using Statistical Association Fluid Theory (SAFT-γ Mie) and molecular dynamics (MD) simulations, which can be used to predict behaviour beyond the experimentally accessible conditions. These simulations confirmed that squalane is somewhat more compatible with poly(isoprene), "PI" than poly(butadiene), "PB", and further enabled prediction of the temperature dependence of compatibility...
April 26, 2017: Soft Matter
https://www.readbyqxmd.com/read/28443901/roles-of-conducting-filament-and-non-filament-regions-in-the-ta2o5-and-hfo2-resistive-switching-memory-for-switching-reliability
#9
Tae Hyung Park, Hae Jin Kim, Woo Young Park, Soo Gil Kim, Byung Joon Choi, Cheol Seong Hwang
The endurance of switching cycles, which is a critical measure of device reliability, in an ultra-thin (1.5 nm) Ta2O5 and HfO2 resistive random access (ReRAM) memory cell with a 28 nm lateral dimension was studied using current-voltage (I-V) sweep and closed-loop pulse switching (CLPS) tests. The two devices showed the typical oxygen-deficient conducting-filament (CF)-mediated bipolar resistance switching behaviour, which was induced by the asymmetric electrode configuration: Ta as the oxygen vacancy (VO) source/reservoir and TiN as the inert electrode...
April 26, 2017: Nanoscale
https://www.readbyqxmd.com/read/28443672/heightened-hiv-antibody-responses-in-postpartum-women-as-exemplified-by-recent-infection-assays-implications-for-incidence-estimates
#10
John Hargrove, Cari van Schalkwyk, Jean Humphrey, Kuda Mutasa, Robert Ntozini, Michele Owen, Silvina Masciotra, Bharat Parekh, Yen T Duong, Trudy Dobbs, Peter Kilmarx, Elizabeth Gonese
BACKGROUND: Laboratory assays that identify recent HIV infections are important for assessing impacts of interventions aimed at reducing HIV incidence. Kinetics of HIV humoral responses can vary with inherent assay properties, and between HIV subtypes, populations and physiological states. They are important in determining mean duration of recent infection (MDRI) for antibody-based assays for detecting recent HIV infections. METHODS: We determined MDRIs for BED-CEIA, LAg and BRAI assays for 101 seroconverting postpartum women, recruited in Harare in 1997- 2000 during the Zimbabwe Vitamin A for Mothers and Babies (ZVITAMBO) Trial, comparing them against published MDRIs estimated from seroconverting cases in the general population...
April 26, 2017: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/28443598/evaluation-of-inferior-turbinate-stroma-with-ultrasound-elastography-in-allergic-rhinitis-patients
#11
Göksel Turhal, Sercan Göde, Ceyda Tunakan Dalgıç, Aytül Zerrin Sin, Erkan Kısmalı, İsa Kaya, Arın Öztürk, Özlem Göksel, Raşit Midilli, Kerem Öztürk, Bülent Karcı
BACKGROUND: Diagnosis of allergic rhinitis is primarily based on history, physical examination and allergy testing. A technique that noninvasively evaluates the soft tissue changes in the nasal mucosa of allergic rhinitis patients has not been defined. AIMS: To assess nasal mucosal changes and measure the submucosal fibrosis in allergic rhinitis patients with sonoelastography. STUDY DESIGN: Case control study Methods: Eighty-eight turbinates of 44 patients were included in the study...
April 6, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28442701/a-case-of-trigger-point-injection-induced-hypokalemic-paralysis
#12
Paolo K Soriano, Mukul Bhattarai, Carrie N Vogler, Tamer H Hudali
BACKGROUND Trigger-point injection (TPI) therapy is an effective modality for symptomatic treatment of myofascial pain. Serious adverse effects are rarely observed. In this report, we present the case of a 39-year-old man who experienced severe, transient hypokalemic paralysis in the context of TPI therapy with methylprednisolone, bupivacaine, and epinephrine. He was successfully treated with electrolyte replacement in a closely monitored setting. CASE REPORT A 39-year-old man with no past medical history except for chronic left hip pain from a work-related injury received a TPI with methylprednisolone and bupivacaine...
April 26, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28442521/application-of-flow-cytometry-in-the-early-diagnosis-of-neonatal-sepsis
#13
Mustafa Aydin, Sumeyye Barut, H Handan Akbulut, Sit Ucar, Aysen Orman
GOALS: To raise awareness of the utility of flow cytometric detection of inflammatory markers in the early diagnosis of neonatal sepsis. PROCEDURES: In accordance with the Töllner scoring system, cases with ≥10 points are accepted as having "clinical sepsis" and cases with 0-4 points as having "no sepsis". The study group consisted of 50 newborns with clinical sepsis as well as a control group of 50 newborns without sepsis. In all cases, blood counts, C-reactive protein (CRP) levels, and procalcitonin (PCT) levels were recorded...
March 2017: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/28442230/case-control-vaccine-effectiveness-studies-data-collection-analysis-and-reporting-results
#14
REVIEW
Jennifer R Verani, Abdullah H Baqui, Claire V Broome, Thomas Cherian, Cheryl Cohen, Jennifer L Farrar, Daniel R Feikin, Michelle J Groome, Rana A Hajjeh, Hope L Johnson, Shabir A Madhi, Kim Mulholland, Katherine L O'Brien, Umesh D Parashar, Manish M Patel, Laura C Rodrigues, Mathuram Santosham, J Anthony Scott, Peter G Smith, Halvor Sommerfelt, Jacqueline E Tate, J Chris Victor, Cynthia G Whitney, Anita K Zaidi, Elizabeth R Zell
The case-control methodology is frequently used to evaluate vaccine effectiveness post-licensure. The results of such studies provide important insight into the level of protection afforded by vaccines in a 'real world' context, and are commonly used to guide vaccine policy decisions. However, the potential for bias and confounding are important limitations to this method, and the results of a poorly conducted or incorrectly interpreted case-control study can mislead policies. In 2012, a group of experts met to review recent experience with case-control studies evaluating vaccine effectiveness; we summarize the recommendations of that group regarding best practices for data collection, analysis, and presentation of the results of case-control vaccine effectiveness studies...
April 22, 2017: Vaccine
https://www.readbyqxmd.com/read/28442206/change-the-habit-to-change-the-practice-do-audits-really-ever-change-anything
#15
D Bodansky, Y Oskrochi, G Judah, M Lewis, B Fischer, B Narayan
INTRODUCTION: Methicillin resistant staphylococcus aureus (MRSA) eradication by nurses and pre-op induction antibiotics are mandated for emergency surgery, where true status is unknown. We assessed adherence to local MRSA guidelines for patients undergoing emergency hip fracture surgery and employed point of decision prompts to influence clinicians' behaviour. METHODS: We undertook a retrospective record review for all patients undergoing emergency hip fracture surgery at a UK major trauma centre over 3-months...
April 17, 2017: Injury
https://www.readbyqxmd.com/read/28442113/temporal-patterns-of-dengue-epidemics-the-case-of-recent-outbreaks-in-kaohsiung
#16
Mattia Sanna, Ying-Hen Hsieh
OBJECTIVE: To investigate whether major dengue outbreaks in the last two decades in Kaohsiung follow a precise temporal pattern. METHODS: Government daily lab-confirmed dengue case data from three major dengue outbreaks occurring during the last two decades in Kaohsiung in 2002, 2014 and 2015, is utilized to compute the corresponding weekly cumulative percentage of total case numbers. We divide each of the three time series data into two periods to examine the corresponding weekly cumulative percentages of case numbers for each period...
March 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28441712/virus-based-devices-prospects-for-allopoiesis
#17
Bogdan Dragnea
The assembly line is a commonly invoked example of allopoiesis, the process whereby a system produces a different system than itself. In this sense, virus production in plants is an instance of bio-enabled bottom-up allopoiesis because the plant host can be regarded as a programmable assembly line for the virus. Reprogramming this assembly line and integrating it into a larger lineup of chemical manipulations has seen a flurry of activity recently, with more sophisticated systems emerging every year. The field of virus nanomaterials now has several subdisciplines that focus on virus shells as assemblers, scaffolds for molecular circuitry, chemical reactors, magnetic and photonic beacons, and therapeutic carriers...
April 25, 2017: ACS Nano
https://www.readbyqxmd.com/read/28441667/significance-of-user-participation-in-a-hospital-information-system-success-insights-from-a-case-study
#18
Naveed Saleem, Douglas Steel, Gokhan Gercek, Ashish Chandra
User participation in the development of a system is universally prescribed as an effective strategy to ensure the success of the resultant system. However, the existing literature on the merits of user participation only provides equivocal evidence. Various analyses of this literature point out that this equivocal evidence may be due to inconsistent operational measures of the user participation and system success constructs. Planned organizational change and participative decision making, the underlying paradigms of user participation construct, suggest that the development of some information systems may require blending of users' system-related functional expertise and developers' technical expertise to ensure system success...
April 2017: Health Care Manager
https://www.readbyqxmd.com/read/28441373/cost-effectiveness-analysis-of-interventions-to-reduce-risk-of-aspiration-in-elderly-cancer-survivors-residing-in-skilled-nursing-facilities
#19
S Mantravadi
BACKGROUND: Aspiration can occur in patients of any age group, but it can be prevented. The primary population at risk is made up of survivors of cancer because of their increased risk of mucositis, mucosal atrophy, and dysphagia associated with chemotherapy, radiotherapy, and the disease process itself. The rate of incidence of aspiration cannot be quantified, because minor cases of aspiration often go unreported. Sequelae ensuing from aspirations can include pneumonia, end-stage kidney disease, dialysis, and death...
April 2017: Cancer Control: Journal of the Moffitt Cancer Center
https://www.readbyqxmd.com/read/28441243/emergency-point-of-care-ultrasound-diagnosis-of-retained-soft-tissue-foreign-bodies-in-the-pediatric-emergency-department
#20
Terry Varshney, Charisse W Kwan, Jason W Fischer, Alyssa Abo
The presence of a foreign body (FB), its depth and size, is often indeterminate by clinical examination. Conventional imaging such as a radiograph can fail to visualize soft tissue FBs. We present 2 cases where point-of-care ultrasound was used to detect previously unidentified FBs.
April 24, 2017: Pediatric Emergency Care
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