57 research outputs found

    Investigation of dosimetry in four human head models for planar monopole antenna with a coupling feed for LTE/WWAN/WLAN internal mobile phone

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    The objective of the present study is to evaluate the Specific Absorption Rate (SAR) within the human head model exposed to the radiation of planar monopole antenna with T-shaped coupling feed and an inductive shorting strip. The presented design has a compact structure, a planar configuration and occupying a small size of 36×20mm2. Two wide bands can be generated by the proposed antenna 546 MHz (734-1280 MHz) and 1066 MHz (1934-3000 MHz) for the LTE/WWAN/WLAN internal mobile phone. The antenna performance parameters comprising return loss, radiation patterns, and gain are discussed. In this research work four different human head models have been implemented: homogenous spherical head, spherical seven layer model, Specific Anthropomorphic Mannequin (SAM) phantom and HUGO human head model. On the other hand the effects of operating frequency and gap distance between the mobile phone antenna and the human head model on distributions of the SAR inside the human head are investigated. All the simulations are done for three different distances between the antenna and the head model (5 mm, 10 mm and 20 mm). Moreover, the SAR levels for the head tissues are calculated in accordance to the two currently accepted standards: Federal Communications Commission (FCC) and International Commission on Non-Ionizing Radiation Protection (ICNIRP)

    Causal and associational language in observational health research: A systematic evaluation.

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    This is the final version. Available from Oxford University Press via the DOI in this record. Data, data analysis code, and materials are available on the Open Science Framework project https://osf.io/jtdaz/.We estimated the degree to which language used in the high profile medical/public health/epidemiology literature implied causality using language linking exposures to outcomes and action recommendations; examined disconnects between language and recommendations; identified the most common linking phrases; and estimated how strongly linking phrases imply causality. We searched and screened for 1,170 articles from 18 high-profile journals (65 per journal) published from 2010-2019. Based on written framing and systematic guidance, three reviewers rated the degree of causality implied in abstracts and full text for exposure/outcome linking language and action recommendations. Reviewers rated the causal implication of exposure/outcome linking language as None (no causal implication) in 13.8%, Weak 34.2%, Moderate 33.2%, and Strong 18.7% of abstracts. The implied causality of action recommendations was higher than the implied causality of linking sentences for 44.5% or commensurate for 40.3% of articles. The most common linking word in abstracts was "associate" (45.7%). Reviewers' ratings of linking word roots were highly heterogeneous; over half of reviewers rated "association" as having at least some causal implication. This research undercuts the assumption that avoiding "causal" words leads to clarity of interpretation in medical research.Marie Skłodowska-Curie grantAustralian Research CouncilNational Institute of Mental HealthNational Institute of Mental HealthNational Institute of Biomedical Imaging and BioengineeringNational Center for Advancing Translational Sciences UCLA Clinical Translational Science InstituteBloomberg American Health InitiativeKaren Toffler Charity Trus

    Pituitary apoplexy presenting as acute painful isolated unilateral third cranial nerve palsy

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    A 40-year-old man presented with a sudden severe headache and complete right-sided ptosis. Neuro-ophthalmic examination revealed a right oculomotor nerve palsy. Computed tomography of the brain showed a round isodense intrasellar mass. Magnetic resonance imaging demonstrated a pituitary tumor with some areas of infarction and invasion into the right cavernous sinus, which was diagnosed as pituitary apoplexy. The patient received intravenous steroid for 10 days with no recovery of the oculomotor nerve palsy. He underwent trans-sphenoid tumor resection followed by complete recovery of the oculomotor nerve and no sign of tumor in postoperative MRI, two weeks after the surgery

    Legislative Documents

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    Also, variously referred to as: House bills; House documents; House legislative documents; legislative documents; General Court documents

    Large regional disparities in prevalence, management and reimbursement of hospital undernutrition.

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    Undernutrition is a frequent condition among hospitalized patients, with a significant impact on patient's outcome and hospital costs. Whether undernutrition is reported similarly at the national level has seldom been assessed. We aimed to (1) assess regional differences within Switzerland regarding undernutrition prevalence, management, and cost reimbursement and (2) identify the factors associated with reporting of undernutrition status and its management. Observational cross-sectional study including routine statistics from the Swiss hospital discharge databases for years 2013 and 2014 (seven administrative regions). All adults aged ≥20 with length of hospital stay of at least 1 day was included. Reported undernutrition was defined based on the International Classification of Diseases (ICD)-10 codes. Nutritional management and "reimbursable" undernutrition codes were also assessed. Of the initial 1,784,855 hospitalizations, 3.6% had reported undernutrition, the prevalence ranging between 1.8% (Ticino) and 4.6% (Mittelland). Use of different undernutrition-related ICD-10 codes also varied considerably across regions. Multivariable analysis showed a twofold variation in reported undernutrition: multivariable-adjusted odds ratio and 95% confidence interval relative to Eastern Switzerland: 2.31 (2.23, 2.38) for Mittelland and 0.74 (0.70, 0.79) for Ticino. Over half (59.6%) of hospitalizations with reported undernutrition also included information on undernutrition management, ranging between 28.6% (Ticino) and 67.2% (Zürich). Only one third (36.8%) of undernutrition-related codes were reimbursable, ranging between 8.3% (Ticino) and 50.7% (Zürich). In Switzerland, there is considerable regional variation regarding reporting of undernutrition prevalence, management, and cost reimbursement. Undernutrition appears to be insufficiently managed and valued
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