415 research outputs found

    Management of a case of thromboembolism post spine surgery: a case report

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    Postoperative deep vein thrombosis (DVT) of lower limbs is often asymptomatic. In many patients, fatal pulmonary embolism (PE) is the first clinical manifestation of postoperative venous thromboembolism (VTE). Routine screening for asymptomatic DVT of the lower limbs has a low sensitivity and is quite impractical. For these reasons, routine and systematic prophylaxis in patients at risk, is the strategy of choice to reduce the burden of VTE after surgery. If used appropriately such prophylaxis is cost effective since it reduces the incidence of symptomatic thromboembolic events, which require costly diagnostic procedures and prolonged anticoagulation therapy. Here we report the post-operative course of a spine surgery patient, presenting with DVT in calf veins, which lodged into pulmonary artery and was managed successfully with low molecular weight heparin (LMWH), embolectomy, inferior vena cava (IVC) filter, and dabigatran

    Influence of compression ratio variation on diesel engines, performance and exhaust emission parameters devouring microalgae biodiesel blends

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    243-255The diesel engine performance as well as exhaust emission attributes are influenced by different structures. Impact of compression ratio and microalgae biodiesel blending proportion in petroleum diesel on variable compression ratio diesel engine performance and exhaust emission have been investigated in this study. The five blends of microalgae have been prepared on volumetric basis adopting standard procedure. The engine is fuelled with these five blends respectively to investigate their impact on engine performance and emission attributes. The experimentation has carried out at compression ratio 15.5, 16.5, and 17. For benchmarking comparison, the obtained results have been compared to test results found using petroleum diesel as fuel. Obtained experimental results have uncovered that the engine brake thermal efficiency increases as compression ratio increases for all the microalgae biodiesel blends. The brake specific fuel consumption diminishes with rise of compression ratio for tested fuel blends. The outcomes additionally show brake specific fuel consumption stay higher for blends and increase with rise of biodiesel mixing percent contrasted with unadulterated diesel. At the point when compression ratio has expanded from 15.5 to 17.5, the hydrocarbons and carbon monoxides outflow have reduced radically and nitrogen oxides discharge increases

    Premorbid Cognitive Deficits in Young Relatives of Schizophrenia Patients

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    Neurocognitive deficits in schizophrenia (SZ) are thought to be stable trait markers that predate the illness and manifest in relatives of patients. Adolescence is the age of maximum vulnerability to the onset of SZ and may be an opportune “window” to observe neurocognitive impairments close to but prior to the onset of psychosis. We reviewed the extant studies assessing neurocognitive deficits in young relatives at high risk (HR) for SZ and their relation to brain structural alterations. We also provide some additional data pertaining to the relation of these deficits to psychopathology and brain structural alterations from the Pittsburgh Risk Evaluation Program (PREP). Cognitive deficits are noted in the HR population, which are more severe in first-degree relatives compared to second-degree relatives and primarily involve psychomotor speed, memory, attention, reasoning, and social-cognition. Reduced general intelligence is also noted, although its relationship to these specific domains is underexplored. Premorbid cognitive deficits may be related to brain structural and functional abnormalities, underlining the neurobiological basis of this illness. Cognitive impairments might predict later emergence of psychopathology in at-risk subjects and may be targets of early remediation and preventive strategies. Although evidence for neurocognitive deficits in young relatives abounds, further studies on their structural underpinnings and on their candidate status as endophenotypes are needed

    Synthesis and Biological Evaluation of some Novel 2-Mercaptobenzothiazoles Carrying

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    ABSTRACT Several 2-mercaptobenzothiazole derivatives containing 1,3,4-oxadiazoles, 1,2,4-triazoles and 1,3,4-thiadiazoles at the second position were synthesized. Some of these synthesized compounds were evaluated for their in vivo analgesic, anti-inflammatory, acute toxicity and ulcerogenic actions. Some of the tested compounds showed significant analgesic and anti-inflammatory activities. Two of the compounds showed significant gastrointestinal protection compared to the standard drug diclofenac sodium. The compounds were also tested for their in vitro antimicrobial activity with most displaying selective activity against the Gram-negative bacteria Pseudomonas aeruginosa. In the present investigation the tested compounds did not possess antifungal activity

    Herbex-kid Inhibits Immediate Hypersensitivity Reactions in Mice and Rats

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    Herbex-kid (HK), a polyherbal formulation was evaluated in various experimental allergic models of Type I hypersensitivity reactions. Compound 48/80 (C 48/80) has been shown to induce rat mesentery mast cell degranulation and HK (1.07, 10.75 and 107.5 mg ml−1) inhibited the mast cell degranulation in a dose dependent manner. HK (1.07, 10.75 and 107.5 mg kg−1; p.o.) showed dose-dependent protection against C 48/80 induced systemic anaphylaxis in male Balb/C mice. In active anaphylaxis model, male Wistar rats orally administered with 10.75 and 107.5 mg kg−1 of HK showed significant (P < 0.01) protection against mast cell degranulation, while in passive anaphylaxis model, only at 107.5 mg kg−1 showed significant (P < 0.01) reduction in mast cell degranulation. HK at all dose levels was able to significantly decrease the time spent in nasal rubbing in Wistar rats sensitized to ovalbumin, while only at 107.5 mg kg−1 it showed significant (P < 0.01) reduction in number of sneezes. In C 48/80-induced skin itch model, all dose levels of HK significantly (P < 0.001) decreased the time spent in itching and the number of itches. HK did not produce any significant inhibition in histamine induced contraction in guinea pig ileum. From the above findings we conclude that the HK possesses antiallergic activity mediated by reducing of the release mediators from mast cells and also by 5-HT antagonism without the involvement of histamine (H1) receptors

    Thoracic cord compression caused by disk herniation in Scheuermann’s disease: A case report and review of the literature

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    We present the case of a 14-year-old male with Scheuermann’s disease and significant neurological deficit due to thoracic disk herniation at the apex of kyphosis. He was treated with an anterior decompression, anterior and posterior fusion in the same setting using plate, cage and a segmental instrumentation system. The patient had an excellent outcome with complete neurological recovery

    Corporate boards and performance pricing in private debt contracts

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    This paper investigates the effects of corporate governance on the use of performance pricing in debt contracts on a sample of newly syndicated loans in the U.S. private debt market. While cross-sectional results provide no evidence for the predicted relation between corporate governance quality and the likelihood of using performance pricing in debt contracts, there is evidence for the predicted positive relation between corporate governance quality and the use of interest-increasing performance pricing provisions. Evidence also provides support for the predicted negative relation between corporate governance quality and the use of financial ratio as the measure of performance underlying the provisions. Overall, empirical evidence supports the hypothesis that debt-holders perceive aspects of corporate governance to be beneficial and factor them in their contracting decisions

    Corporate Social Responsibility Strategies of Spanish Listed Firms and Controlling Shareholders’ Representatives

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    This article aims at analyzing how controlling shareholders’ representatives on boards affect corporate social responsibility (CSR) strategies (disclosing CSR matters) in Spain, a context characterized by high ownership concentration, one-tier boards, little board independence, weak legal protection for investors, and the presence of large shareholders, especially institutional shareholders. Furthermore, among controlling shareholders’ representatives, we can distinguish between those appointed by insurance companies and banks and those appointed by mutual funds, investment funds, and pension funds. The effect of these categories of directors on CSR strategies is, therefore, also analyzed. Our findings suggest that controlling shareholders’ representatives have a positive effect on CSR strategies, as do directors appointed by investment funds, pension funds, and mutual funds, while directors appointed by banks and insurance companies have no impact on CSR strategies. This analysis offers new insights into the role played by certain types of directors on CSR strategies
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