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https://www.readbyqxmd.com/read/29166721/-a-preliminary-study-on-the-relationship-between-idiopathic-arrhythmia-and-cardiac-magnetic-resonance-imaging-defined-cardiac-features-in-patients-with-straight-back-syndrome
#1
L Chen, X H Ma, L Zhao, R Bai, S N Li, L Wang, H Chen, Z M Fan, M W Lou, Y D Niu
Objective: To retrospectively analyze the potential correlation between cardiac magnetic resonance (CMR) imaging and clinical features and idiopathic arrhythmia in patients with straight back syndrome (SBS). Methods: Patients receiving CMR imaging examination from April 2015 to March 2016 at our department (n=1 432) were screened, 76 patients met the diagnosis criteria of flat chest (anteroposterior diameter/transthoracic diameter (APD/TTD) ratio<0.37 at the T8 vertebra). After excluding 33 patients with structural heart disease, 43 SBS patients were divided into two groups: SBS without obvious morphological change in the heart (group A, n=19) and SBS with morphological change of the heart (group B, n=24)...
November 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/29166684/-implantation-of-a-modular-distal-femoral-replacement-with-compressive-osseointegration-as-a-salvage-procedure-in-a-complex-femoral-posttraumatic-setting
#2
Anna Janine Schreiner, Peter Marten de Zwart, Christian Arnscheidt, Ulrich Stöckle, Björn Gunnar Ochs
Background Large bone defects and losses play a crucial role in both tumour surgery and in complex primary and revision total knee replacement. The established options of cemented or uncemented long intramedullary stems are limited by large bone defects and are at risk from relatively high exposure to aseptic loosening. There is no general valid agreement on implant fixation of the distal femur. A further option is the cementless fixation method with compressive osseointegration, based on the so-called Wolff law of bone remodelling...
November 22, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/29166666/evaluating-the-efficacy-of-an-active-compression-brace-on-orthostatic-cardiovascular-responses
#3
Hadi Moein, Ramandeep Jhalli, Andrew P Blaber, Victoria E Claydon, Carlo Menon
Orthostatic intolerance, one of the principle causes of syncope, can occur secondary to concomitant venous pooling and enhanced capillary filtration. We aimed to evaluate a prototype portable calf active compression brace (ACB) designed to improve orthostatic haemodynamic control. Fourteen healthy volunteers participated in a randomized, placebo controlled, cross-over, double-blind study. Testing consisted of head-upright tilting and walking on a treadmill conducted on two consecutive days with a pair of ACBs wrapped around both calves...
2017: PloS One
https://www.readbyqxmd.com/read/29166530/new-azhdarchoid-pterosaur-pterosauria-pterodactyloidea-with-an-unusual-lower-jaw-from-the-portezuelo-formation-upper-cretaceous-neuqu%C3%A3-n-group-patagonia-argentina
#4
Alexander W A Kellner, Jorge O Calvo
A new azhdarchoid pterosaur from the Upper Cretaceous of Patagonia is described. The material consists of an incomplete edentulous lower jaw that was collected from the upper portion of the Portezuelo Formation (Turonian-Early Coniacian) at the Futalognko site, northwest of Neuquén city, Argentina. The overall morphology of Argentinadraco barrealensis gen. et sp. nov. indicates that it belongs to the Azhdarchoidea and probable represents an azhdarchid species. The occlusal surface of the anterior portion is laterally compressed and shows blunt lateral margins with a medial sulcus that are followed by two well-developed mandibular ridges, which in turn are bordered laterally by a sulcus...
2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/29166201/warm-water-compress-as-an-alternative-for-decreasing-the-degree-of-phlebitis
#5
Fitri Annisa, Nani Nurhaeni, Dessie Wanda
Intravenous fluid therapy is an invasive procedure which may increase the risk of patient complications. One of the most common of these is phlebitis, which may cause discomfort and tissue damage. Therefore, a nursing intervention is needed to effectively treat phlebitis. The purpose of this study was to investigate the effectiveness of applying a warm compression intervention to reduce the degree of phlebitis. A quasi-experimental pre-test and post-test design was used, with a non-equivalent control group...
2017: Compr Child Adolesc Nurs
https://www.readbyqxmd.com/read/29166135/application-of-diffusion-tensor-imaging-in-quantitatively-monitoring-chronic-constriction-injury-of-rabbit-sciatic-nerves-correlation-with-histological-and-functional-changes
#6
Wenjun Wu, Yanfeng Niu, Xiangquan Kong, Dingxi Liu, Xi Long, Shenglei Shu, Xiaoyun Su, Bing Wang, Xiaoming Liu, Yamei Ma, Lixia Wang
OBJECTIVE: To investigate the potential of diffusion tensor imaging (DTI) in quantitatively monitoring chronic constriction injuries (CCI) of sciatic nerves and to analyze the association of DTI parameters with nerve histology and limb function. METHODS: CCI was created on sciatic nerves in the right hind legs of 20 rabbits with the left as control. DTI parameters -- fractional anisotropy (FA), apparent diffusion coefficient (ADC), axial diffusivity (AD) and radial diffusivity (RD) -- and limb function were longitudinally evaluated...
November 22, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/29166046/fcc-hcp-coexistence-in-dense-thermo-responsive-microgel-crystals
#7
D Karthickeyan, R G Joshi, B V R Tata
Analogous to hard-sphere suspensions, monodisperse thermo-responsive poly (N-isopropyl acrylamide) (PNIPAM) microgel particles beyond a volume fraction (ϕ) of 0.5 freeze into face centered cubic (FCC)-hexagonal close packed (HCP) coexistence under as prepared conditions and into an FCC structure upon annealing. We report here FCC-HCP coexistence to be stable in dense PNIPAM microgel crystals (ϕ > 0.74) with particles in their deswollen state (referred to as osmotically compressed microgel crystals) and the FCC structure with particles in their swollen state by performing annealing studies with different cooling rates...
June 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29166032/combined-cononsolvency-and-temperature-effects-on-adsorbed-pnipam-microgels
#8
Sebastian Backes, Patrick Krause, Weronika Tabaka, Marcus U Witt, Regine von Klitzing
The present study adresses the multi-responsive behavior of Poly(N-isopropylacrylamide) (PNIPAM) microgels adsorbed to interfaces. The microgels react to changes in temperature by shrinking in aqueous solution above their volume phase transition temperature (VPTT). Additionally, they shrink in mixtures of water and ethanol, although both individual liquids are good solvents for PNIPAM. The combination of this so-called cononsolvency effect and the temperature response of adsorbed microgels is studied by atomic force microscopy (AFM)...
November 22, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29165994/from-graphene-oxide-to-reduced-graphene-oxide-impact-on-physiochemical-and-mechanical-properties-of-graphene%C3%A2-cement-composites
#9
Aliakbar Gholampour, Meisam Valizadeh Kiamahalleh, Diana N H Tran, Togay Ozbakkaloglu, Dusan Losic
Graphene materials have been extensively explored and successfully used to improve performances of cement composites. These formulations were mainly optimized based on different dosages of graphene additives, but with lack of understanding how other parameters such as surface chemistry, size, charge, and defects of graphene structures could impact on physiochemical and mechanical properties of final material. This paper presents the first experimental study to evaluate the influence of oxygen functional groups of graphene and defectiveness of graphene structures on the axial tension and compression properties of graphene-cement mortar composites...
November 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29165882/single-pixel-black-phosphorus-photodetector-for-near-infrared-imaging
#10
Jinshui Miao, Bo Song, Zhihao Xu, Le Cai, Suoming Zhang, Lixin Dong, Chuan Wang
Infrared imaging systems have wide range of military or civil applications and 2D nanomaterials have recently emerged as potential sensing materials that may outperform conventional ones such as HgCdTe, InGaAs, and InSb. As an example, 2D black phosphorus (BP) thin film has a thickness-dependent direct bandgap with low shot noise and noncryogenic operation for visible to mid-infrared photodetection. In this paper, the use of a single-pixel photodetector made with few-layer BP thin film for near-infrared imaging applications is demonstrated...
November 22, 2017: Small
https://www.readbyqxmd.com/read/29165436/cochlear-implant-in-prelingually-deafened-oralist-adults-speech-perception-outcomes-subjective-benefits-and-quality-of-life-improvement
#11
F Forli, G Turchetti, G Giuntini, S Bellelli, S Fortunato, L Bruschini, M R Barillari, S Berrettini
The aim of this study is to report our results in a group of prelingually deafened adults, who followed an oralist rehabilitation programme, and submitted to cochlear implant at our institution. We evaluated 30 prelingually deafened adult patients, 18 males and 12 females, median age 35 years, of a group of 36 prelingually deafened adult patients consecutively submitted to unilateral cochlear implantation at the ENT Unit of the University of Pisa. After implantation, patients achieved significant benefits in terms of speech perception skills, including the ability to have telephone conversations in some cases, quality of life and their own perception of disability...
October 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/29165078/pharmaceutical-product-lead-optimization-for-better-in-vivo-bioequivalence-performance-a-case-study-of-diclofenac-sodium-extended-release-matrix-tablets
#12
Aliasgar Shahiwala, Aisha Zarar
BACKGROUND: In order to prove the validity of a new formulation, a considerable amount of efforts is required to study bioequivalence, not only increases the burden of carrying out a number of bioequivalence studies but eventually increase the cost of the optimization process. OBJECTIVE: The aim of the present study was to develop sustained release matrix tablets containing diclofenac sodium using natural polymers and to demonstrate step by step process of product development till the prediction of in vivo marketed product equivalence of the developed product...
November 20, 2017: Current Drug Delivery
https://www.readbyqxmd.com/read/29164672/resection-of-an-intra-esophageal-bronchogenic-cyst-by-endoscopic-submucosal-dissection
#13
Alexandros Raptis, Pierre H Deprez, Anne Jouret-Mourin
Bronchogenic cysts are rare foregut abnormalities that arise from aberrant budding of the tracheobronchial tree early in embryological development. They account for 10% to 15% of all primary masses of the mediastinum (1), where they appear predominantly and may compress nearby structures. Intra-esophageal bronchogenic cysts are rare and have only been reported in 23 adult cases since 1981 (2). We report an intra-esophageal bronchogenic cyst that was removed by endoscopic mucosal dissection (ESD). This article is protected by copyright...
November 22, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/29164222/strain-stiffening-gels-based-on-latent-crosslinking
#14
Yen H Tran, Matthew J Rasmuson, Todd Emrick, John Klier, Shelly R Peyton
Gels represent an increasingly important class of soft materials with applications ranging from regenerative medicine to commodity materials. However, gels typically exhibit relative mechanical weakness, which worsens under repeated strain. Here we report a new class of responsive gels with latent crosslinking moieties that exhibit strain-stiffening behavior. This property results from the lability of disulfides, initially isolated in a protected state, then activated to crosslink on-demand. The thiol groups are induced to form inter-chain crosslinks when subjected to mechanical compression, resulting in a gel that strengthens under strain...
November 22, 2017: Soft Matter
https://www.readbyqxmd.com/read/29164089/pulmonary-hypoplasia-caused-by-fetal-ascites-in-congenital-cytomegalovirus-infection-despite-fetal-therapy
#15
Kazumichi Fujioka, Ichiro Morioka, Kosuke Nishida, Mayumi Morizane, Kenji Tanimura, Masashi Deguchi, Kazumoto Iijima, Hideto Yamada
We report two cases of pulmonary hypoplasia due to fetal ascites in symptomatic congenital cytomegalovirus (CMV) infections despite fetal therapy. The patients died soon after birth. The pathogenesis of pulmonary hypoplasia in our cases might be thoracic compression due to massive fetal ascites as a result of liver insufficiency. Despite aggressive fetal treatment, including multiple immunoglobulin administration, which was supposed to diminish the pathogenic effects of CMV either by neutralization or immunomodulatory effects, the fetal ascites was uncontrollable...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/29164035/a-clinical-practice-guideline-for-the-management-of-patients-with-degenerative-cervical-myelopathy-recommendations-for-patients-with-mild-moderate-and-severe-disease-and-nonmyelopathic-patients-with-evidence-of-cord-compression
#16
Michael G Fehlings, Lindsay A Tetreault, K Daniel Riew, James W Middleton, Bizhan Aarabi, Paul M Arnold, Darrel S Brodke, Anthony S Burns, Simon Carette, Robert Chen, Kazuhiro Chiba, Joseph R Dettori, Julio C Furlan, James S Harrop, Langston T Holly, Sukhvinder Kalsi-Ryan, Mark Kotter, Brian K Kwon, Allan R Martin, James Milligan, Hiroaki Nakashima, Narihito Nagoshi, John Rhee, Anoushka Singh, Andrea C Skelly, Sumeet Sodhi, Jefferson R Wilson, Albert Yee, Jeffrey C Wang
Study Design: Guideline development. Objectives: The objective of this study is to develop guidelines that outline how to best manage (1) patients with mild, moderate, and severe myelopathy and (2) nonmyelopathic patients with evidence of cord compression with or without clinical symptoms of radiculopathy. Methods: Five systematic reviews of the literature were conducted to synthesize evidence on disease natural history; risk factors of disease progression; the efficacy, effectiveness, and safety of nonoperative and surgical management; the impact of preoperative duration of symptoms and myelopathy severity on treatment outcomes; and the frequency, timing, and predictors of symptom development...
September 2017: Global Spine Journal
https://www.readbyqxmd.com/read/29164027/a-clinical-practice-guideline-for-the-management-of-degenerative-cervical-myelopathy-introduction-rationale-and-scope
#17
Michael G Fehlings, Lindsay A Tetreault, K Daniel Riew, James W Middleton, Jeffrey C Wang
Degenerative cervical myelopathy (DCM) is a progressive spine disease and the most common cause of spinal cord dysfunction in adults worldwide. Patients with DCM may present with common signs and symptoms of neurological dysfunction, such as paresthesia, abnormal gait, decreased hand dexterity, hyperreflexia, increased tone, and sensory dysfunction. Clinicians across several specialties encounter patients with DCM, including primary care physicians, rehabilitation specialists, therapists, rheumatologists, neurologists, and spinal surgeons...
September 2017: Global Spine Journal
https://www.readbyqxmd.com/read/29164022/impact-of-baseline-magnetic-resonance-imaging-on-neurologic-functional-and-safety-outcomes-in-patients-with-acute-traumatic-spinal-cord-injury
#18
REVIEW
Shekar Kurpad, Allan R Martin, Lindsay A Tetreault, Dena J Fischer, Andrea C Skelly, David Mikulis, Adam Flanders, Bizhan Aarabi, Thomas E Mroz, Eve C Tsai, Michael G Fehlings
Study Design: Systematic review. Objective: To perform a systematic review to evaluate the utility of magnetic resonance imaging (MRI) in patients with acute spinal cord injury (SCI). Methods: An electronic search of Medline, EMBASE, the Cochrane Collaboration Library, and Google Scholar was conducted for literature published through May 12, 2015, to answer key questions associated with the use of MRI in patients with acute SCI. Results: The literature search yielded 796 potentially relevant citations, 8 of which were included in this review...
September 2017: Global Spine Journal
https://www.readbyqxmd.com/read/29163888/theoretical-predictions-suggest-carbon-dioxide-phases-iii-and-vii-are-identical
#19
Watit Sontising, Yonaton N Heit, Jessica L McKinley, Gregory J O Beran
Solid carbon dioxide exhibits a rich phase diagram at high pressures. Metastable phase III is formed by compressing dry ice above ∼10-12 GPa. Phase VII occurs at similar pressures but higher temperatures, and its stability region is disconnected from III on the phase diagram. Comparison of large-basis-set quasi-harmonic second-order Møller-Plesset perturbation theory calculations and experiment suggests that the long-accepted structure of phase III is problematic. The experimental phase III and VII structures both relax to the same phase VII structure...
November 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/29163600/plastome-rearrangements-in-the-adenocalymma-neojobertia-clade-bignonieae-bignoniaceae-and-its-phylogenetic-implications
#20
Luiz H M Fonseca, Lúcia G Lohmann
The chloroplast is one of the most important organelles of plants. This organelle has a circular DNA with approximately 130 genes. The use of plastid genomic data in phylogenetic and evolutionary studies became possible with high-throughput sequencing methods, which allowed us to rapidly obtain complete genomes at a reasonable cost. Here, we use high-throughput sequencing to study the "Adenocalymma-Neojobertia" clade (Bignonieae, Bignoniaceae). More specifically, we use Hi-Seq Illumina technology to sequence 10 complete plastid genomes...
2017: Frontiers in Plant Science
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