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https://www.readbyqxmd.com/read/29351596/freedom-solo%C3%A2-versus-trifecta%C3%A2-bioprostheses-clinical-and-haemodynamic-evaluation-after-propensity-score-matching
#1
Rui J Cerqueira, Renata Raimundo, Soraia Moreira, Francisca A Saraiva, Marta Andrade, Elson Salgueiro, Jorge Almeida, Mário Jorge Amorim, Paulo Pinho, André P Lourenço, Adelino Leite-Moreira
OBJECTIVES: The goal of this study was to compare the stentless Freedom Solo® (FS) and the stented Trifecta® (TF) aortic bioprostheses with regard to haemodynamic profile, left ventricular mass regression and early and late postoperative outcomes and survival. METHODS: A longitudinal cohort study of consecutive patients undergoing aortic valve replacement (2009-16) with either the FS or TF at 1 centre was performed. Local databases and national records were queried...
January 16, 2018: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29351292/allocation-of-distinct-organ-fates-from-a-precursor-field-requires-a-shift-in-expression-and-function-of-gene-regulatory-networks
#2
Sneha Palliyil, Jinjin Zhu, Luke R Baker, Sarah D Neuman, Arash Bashirullah, Justin P Kumar
A common occurrence in metazoan development is the rise of multiple tissues/organs from a single uniform precursor field. One example is the anterior forebrain of vertebrates, which produces the eyes, hypothalamus, diencephalon, and telencephalon. Another instance is the Drosophila wing disc, which generates the adult wing blade, the hinge, and the thorax. Gene regulatory networks (GRNs) that are comprised of signaling pathways and batteries of transcription factors parcel the undifferentiated field into discrete territories...
January 19, 2018: PLoS Genetics
https://www.readbyqxmd.com/read/29350556/rehabilitation-of-a-young-athlete-with-extension-based-low-back-pain-addressing-motor-control-impairments-and-central-sensitization
#3
John J Winslow, Mark Jackson, Andrew Getzin, Michael Costello
OBJECTIVE:   To describe the conservative management of a young athlete with extension-based (EB) low back pain (LBP). BACKGROUND:   We present the case of a 15-year-old female high school gymnast with a 4-year history of EB LBP. Magnetic resonance imaging revealed a healed spondylolysis and significant lumbar multifidi muscle (LMM) atrophy with fatty infiltrate. She had several courses of outpatient orthopaedic rehabilitation that focused on core muscle strengthening (improving activation and strength of the LMM and transversus abdominus muscle in a neutral pelvic position) without long-lasting improvement...
January 19, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29350435/from-micro-to-macro-structures-in-multiple-sclerosis-what-is-the-added-value-of-diffusion-imaging
#4
Mara Cercignani, Claudia Gandini Wheeler-Kingshott
Diffusion imaging has been instrumental in understanding damage to the central nervous system as a result of its sensitivity to microstructural changes. Clinical applications of diffusion imaging have grown exponentially over the past couple of decades in many neurological and neurodegenerative diseases, such as multiple sclerosis (MS). For several reasons, MS has been extensively researched using advanced neuroimaging techniques, which makes it an 'example disease' to illustrate the potential of diffusion imaging for clinical applications...
January 19, 2018: NMR in Biomedicine
https://www.readbyqxmd.com/read/29350155/yersinia-pestis-survival-and-replication-in-potential-ameba-reservoir
#5
David W Markman, Michael F Antolin, Richard A Bowen, William H Wheat, Michael Woods, Mercedes Gonzalez-Juarrero, Mary Jackson
Plague ecology is characterized by sporadic epizootics, then periods of dormancy. Building evidence suggests environmentally ubiquitous amebae act as feral macrophages and hosts to many intracellular pathogens. We conducted environmental genetic surveys and laboratory co-culture infection experiments to assess whether plague bacteria were resistant to digestion by 5 environmental ameba species. First, we demonstrated that Yersinia pestis is resistant or transiently resistant to various ameba species. Second, we showed that Y...
February 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29349852/what-really-matters-to-people-with-aphasia-when-it-comes-to-group-work-a-qualitative-investigation-of-factors-impacting-participation-and-integration
#6
Lucette Lanyon, Linda Worrall, Miranda Rose
BACKGROUND: Participation in a group environment is an inherently complex undertaking for people with aphasia. It involves engaging in multi-person interactions with other people who may have a range of communication strengths and strategies at their disposal. The potential challenges of community aphasia-group participation and practice has had limited attention in the research literature. Evidence from group users have primarily been drawn from the perspective of long-term members or those participating in highly specific and time-bound groups...
January 19, 2018: International Journal of Language & Communication Disorders
https://www.readbyqxmd.com/read/29349818/nanocrystalline-precursors-for-the-co-assembly-of-crack-free-metal-oxide-inverse-opals
#7
Katherine R Phillips, Tanya Shirman, Elijah Shirman, Anna V Shneidman, Theresa M Kay, Joanna Aizenberg
Inorganic microstructured materials are ubiquitous in nature. However, their formation in artificial self-assembly systems is challenging as it involves a complex interplay of competing forces during and after assembly. For example, colloidal assembly requires fine-tuning of factors such as the size and surface charge of the particles and electrolyte strength of the solvent to enable successful self-assembly and minimize crack formation. Co-assembly of templating colloidal particles together with a sol-gel matrix precursor material helps to release stresses that accumulate during drying and solidification, as previously shown for the formation of high-quality inverse opal (IO) films out of amorphous silica...
January 19, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29349776/effect-of-palpable-vs-impalpable-cricothyroid-membranes-in-a-simulated-emergency-front-of-neck-access-scenario
#8
C F Pairaudeau, C Mendonca, C Hillermann, I Qazi, P A Baker, R E Hodgson, S Radhakrishna
The Difficult Airway Society 2015 guidelines recommend and describe in detail a surgical cricothyroidotomy technique for the can't intubate, can't oxygenate (CICO) scenario, but this can be technically challenging for anaesthetists with no surgical training. Following a structured training session, 104 anaesthetists took part individually in a simulated can't intubate, can't oxygenate event using simulation and airway models to evaluate how well they could perform these front-of-neck access techniques. Main outcomes measures were: ability to correctly perform the technical steps; procedural time; and success rate...
January 19, 2018: Anaesthesia
https://www.readbyqxmd.com/read/29347983/experiences-of-an-internet-based-support-and-coaching-model-for-adolescents-and-young-adults-with-adhd-and-autism-spectrum-disorder-a-qualitative-study
#9
Helena Sehlin, Britt Hedman Ahlström, Gerhard Andersson, Elisabet Wentz
BACKGROUND: There is a great demand for non-medical treatment and support targeting the needs of adolescents and young adults with autism spectrum disorder (ASD) and attention-deficit/hyperactivity disorder (ADHD). There is also a lack of qualitative studies providing in-depth insight into these individuals' own experiences within this area. The current study aimed to explore how adolescents and young adults with ADHD, ASD or both experienced taking part in an internet-based support and coaching intervention...
January 18, 2018: BMC Psychiatry
https://www.readbyqxmd.com/read/29347620/suppression-of-crystalline-fluctuations-by-competing-structures-in-a-supercooled-liquid
#10
Pierre Ronceray, Peter Harrowell
We propose a geometrical characterization of amorphous liquid structures that suppress crystallization by competing locally with crystalline order. We introduce for this purpose the crystal affinity of a liquid, a simple measure of its propensity to accumulate local crystalline structures on cooling. This quantity is explicitly related to the high-temperature structural covariance between local fluctuations in crystal order and that of competing liquid structures: favoring a structure that, due to poor overlap properties, anticorrelates with crystalline order reduces the affinity of the liquid...
October 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347593/phase-behavior-and-bulk-structural-properties-of-a-microphase-former-with-anisotropic-competing-interactions-a-density-functional-theory-study
#11
Daniel Stopper, Roland Roth
Using classical density functional theory, we investigate systems exhibiting interactions where a short-range anisotropic attractive force competes with a long-range spherically symmetric repulsive force. The former is modelled within Wertheim's first-order perturbation theory for patchy particles, and the repulsive part is assumed to be a Yukawa potential which is taken into account via a mean-field approximation. From previous studies of systems with spherically symmetric competing interactions, it is well known that such systems can exhibit stable bulk cluster phases (microphase separation) provided that the repulsion is sufficiently weak compared to the attraction...
October 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347403/influence-of-periodic-external-fields-in-multiagent-models-with-language-dynamics
#12
Filippo Palombi, Stefano Ferriani, Simona Toti
We investigate large-scale effects induced by external fields, phenomenologically interpreted as mass media, in multiagent models evolving with the microscopic dynamics of the binary naming game. In particular, we show that a single external field, broadcasting information at regular time intervals, can reverse the majority opinion of the population, provided the frequency and the effectiveness of the sent messages lie above well-defined thresholds. We study the phase structure of the model in the mean field approximation and in numerical simulations with several network topologies...
December 2017: Physical Review. E
https://www.readbyqxmd.com/read/29346395/evaluation-of-participatory-teaching-methods-in-undergraduate-medical-students-learning-along-the-first-academic-courses
#13
Beatriz Gal, Margarita Rubio, Eva Iglesias, Purificación González
The European Higher Education Area (EHEA) is an opportunity to redesign medical education. Academic training is now focused on acquiring not only knowledge, but also those competencies critical to face complex professional scenarios. Together with re-evaluating traditional teaching methods, EHEA has forced a technological shift in the way we teach. By critically assessing the impact of novel teaching methodologies, we can better define biomedical education demands. Here, we address this question on a sample of medical students instructed in basic subjects along the first two academic courses...
2018: PloS One
https://www.readbyqxmd.com/read/29346070/key-pharmacovigilance-stakeholders-experiences-of-direct-patient-reporting-of-adverse-drug-reactions-and-their-prospects-of-future-development-in-the-european-union
#14
P Inácio, A Cavaco, E Allan, M Airaksinen
OBJECTIVES: In the European Union (EU), legislation allows patients to directly report adverse drug reactions (ADRs) to competent authorities. Five years after its implementation, patient reporting is not equal in all countries. This study aimed to explore key stakeholders' perceptions of patient reporting in four EU countries. STUDY DESIGN: Qualitative study design. METHODS: Twelve representatives from national pharmacovigilance centres and/or authorities as well as national pharmaceutical industry bodies in four EU countries participated in the study...
January 12, 2018: Public Health
https://www.readbyqxmd.com/read/29346043/analysis-of-margin-classification-systems-for-assessing-the-risk-of-local-recurrence-after-soft-tissue-sarcoma-resection
#15
Kenneth R Gundle, Lisa Kafchinski, Sanjay Gupta, Anthony M Griffin, Brendan C Dickson, Peter W Chung, Charles N Catton, Brian O'Sullivan, Jay S Wunder, Peter C Ferguson
Purpose To compare the ability of margin classification systems to determine local recurrence (LR) risk after soft tissue sarcoma (STS) resection. Methods Two thousand two hundred seventeen patients with nonmetastatic extremity and truncal STS treated with surgical resection and multidisciplinary consideration of perioperative radiotherapy were retrospectively reviewed. Margins were coded by residual tumor (R) classification (in which microscopic tumor at inked margin defines R1), the R+1mm classification (in which microscopic tumor within 1 mm of ink defines R1), and the Toronto Margin Context Classification (TMCC; in which positive margins are separated into planned close but positive at critical structures, positive after whoops re-excision, and inadvertent positive margins)...
January 18, 2018: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/29345519/-i-just-roll-over-pick-myself-up-and-carry-on-exploring-the-fall-risk-experience-of-canadian-masters-athletes
#16
Dylan Brennan, Aleksandra A Zecevic, Shannon L Sibbald, Volker Nolte
OBJECTIVES: The risk of falling increases in adults over the age of 65. A common barrier to take up physical activity in sedentary older adults is the fear of falls and injury. Experiences of masters athletes can provide insights into management of the risk for falling. The purpose of this phenomenological study was to explore the fall-risk experience of masters athletes actively competing in sport. METHODS: Masters athletes over the age of 55 (n=22) described their experiences in semi-structured interviews...
January 18, 2018: Journal of Aging and Physical Activity
https://www.readbyqxmd.com/read/29345245/isolating-long-wavelength-fluctuation-from-structural-relaxation-in-two-dimensional-glass-cage-relative-displacement
#17
Hayato Shiba, Peter Keim, Takeshi Kawasaki
It has recently been revealed that long-wavelength fluctuation exists in two- dimensional (2D) glassy systems, having the same origin as that given by the Mermin- Wagner theorem for 2D crystalline solids. Here, extending our recent studies, we discuss the quantification of long-wavelength acoustic fluctuation of a lightly supercooled liquid. This fluctuation can be estimated by subtracting the mean-squared displacement (MSD) of particles relative to its cage, represented by the cage-relative MSD, from the original particle MSD...
January 18, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29345009/choosing-non-redundant-representative-subsets-of-protein-sequence-data-sets-using-submodular-optimization
#18
Maxwell W Libbrecht, Jeffrey A Bilmes, William Stafford Noble
Selecting a non-redundant representative subset of sequences is a common step in many bioinformatics workflows, such as the creation of non-redundant training sets for sequence and structural models or selection of "operational taxonomic units" from metagenomics data. Previous methods for this task, such as CD-HIT, PISCES and UCLUST, apply a heuristic threshold-based algorithm that has no theoretical guarantees. We propose a new approach based on submodular optimization. Submodular optimization, a discrete analogue to continuous convex optimization, has been used with great success for other representative set selection problems...
January 18, 2018: Proteins
https://www.readbyqxmd.com/read/29344525/psychometric-properties-of-the-communication-skills-attitude-scale-csas-measure-in-a-sample-of-iranian-medical-students
#19
Afsaneh Yakhforoshha, Mandana Shirazi, Naser Yousefzadeh, Amin Ghanbarnejad, Mohammadali Cheraghi, Rita Mojtahedzadeh, Behrooz Mahmoodi-Bakhtiari, Seyed Amir Hossein Emami
Introduction: Communication skill (CS) has been regarded as one of the fundamental competencies for medical and other health care professionals. Student's attitude toward learning CS is a key factor in designing educational interventions. The original CSAS, as positive and negative subscales, was developed in the UK; however, there is no scale to measure these attitudes in Iran. The aim of this study was to assess the psychometric characteristic of the Communication Skills Attitude Scale (CSAS), in an Iranian context and to understand if it is a valid tool to assess attitude toward learning communication skills among health care professionals...
January 2018: Journal of Advances in Medical Education & Professionalism
https://www.readbyqxmd.com/read/29344457/development-and-implementation-of-module-for-medical-graduates-to-improve-socio-cultural-sensitivity-towards-people-living-with-hiv
#20
Sushanta Kumar Mishra, Somanath Dash
Background: Health professionals are documented as an important cause for stigmatizing people living with HIV (PLHIV). Since traditional teaching on HIV in India does not address cultural competencies, medical graduates lack sociocultural sensitiveness while addressing the health needs of PLHIV. Aim: The aim of this study is to develop and to implement a module for medical graduates to improve their sociocultural sensitivity toward PLHIV. Methodology: A module was designed and introduced to address the core sensitive issues in HIV among medical graduates with the help of trained faculty...
December 2017: International Journal of Applied and Basic Medical Research
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