4,766 research outputs found

    Aneurysmal degeneration of blalock-taussig shunts: Identification and surgical treatment options

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    Many Blalock-Taussig shunts (subclavian to pulmonary artery anastomoses) have been created and a significant number are still being done. Two cases of aneurysmal degeneration of a Blalock-Taussig shunt and their management are described. Development of this rare complication may be related to large shunt flow and long duration. Large, symptomatic or enlarging aneurysms should be repaired and smaller ones studied by serial computed axial tomography. A simple and safe approach to correct this lesion is division and oversewing of the proximal subclavian artery through an anterior approach, assuming adequate pulmonary blood flow is already present or can be established concomitantly

    Nursing Students' Experience of Sexual Harassment During Clinical Practicum: A Phenomenological Approach

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    PURPOSE: To describe nursing students' experience of sexual harassment during clinical practicum. METHODS: An interpretive phenomenological qualitative approach was used to understand contextual experiences of participants. Individual in-depth interviews were conducted to collect data from thirteen nursing students who experienced sexual harassment during clinical practice in general hospitals at D metropolitan city. All interviews were recorded and transcribed into Korean and English. Transcripts were analyzed using the data analysis method described by Diekelmann, Allen, and Tanner. RESULTS: The following 12 themes emerged from the data: ‘unprepared to respond’, ‘lack of education’, ‘unsure about when behavior crosses the line’, ‘power differential for nursing students’, ‘balancing self-preservation with obligations to patients’, ‘shame’, ‘feeling responsible for not being able to prevent the harassment’, ‘impact on patient care’, ‘fear of what might have happened’, ‘fear of repercussions’, ‘long term impact’, and ‘peer support’. CONCLUSION: Participants in this study described feeling an obligation to care for their patients. However, they seemed to be unable to balance this while feeling vulnerable to sexual harassment with strong negative feelings. Helping students recognize and effectively deal with sexual harassment is a critical element to assure quality learning for participants and maintain quality of care during clinical practice

    Early caregiving predicts attachment representations in adolescence: Findings from two longitudinal studies

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    Background: A growing research base demonstrates that adolescents’ construction of secure attachment relationships may underlie successful social and personal relationships and healthy behavioral adjustment. Little is known about the early caregiving origins of adolescent attachment security; this study provides some of the first data on this topic. Method: The relative contribution of early and current caregiving quality to attachment security in adolescence was assessed in two longitudinal studies of a clinic-referred and an at-risk community sample using identical measures (n=209). Quality of early parent-child relationships at age 3-7 years of age and parent-adolescent relationship quality at approximately 12 years were assessed using observational methods; psychosocial risk was derived from extensive interview and questionnaire assessments; adolescent attachment quality was assessed using a standard attachment interview. Results: Analyses indicated moderate stability in observed parent-child interaction quality from early childhood to adolescence. Observational ratings of both early childhood and current caregiving quality were significantly associated with adolescent attachment security; however, early caregiver sensitivity was more strongly associated with adolescent attachment security and predicted later attachment security independently from current caregiving quality. Follow-up analyses indicated that this longitudinal prediction was significantly weaker in the clinic than in the at-risk community sample. Conclusion: Parental sensitive responding in childhood has enduring effects on attachment representation in adolescence, independent of current parenting relationship quality. These findings provide important new evidence supporting early parenting interventions for promoting youth well-being and adjustment

    X-ray Bright Active Galactic Nuclei in Massive Galaxy Clusters I: Number Counts and Spatial Distribution

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    We present an analysis of the X-ray bright point source population in 43 massive clusters of galaxies observed with the Chandra X-ray Observatory. We have constructed a catalog of 4210 rigorously selected X-ray point sources in these fields, which span a survey area of 4.2 square degrees. This catalog reveals a clear excess of sources when compared to deep blank-field surveys, which amounts to roughly 1 additional source per cluster, likely Active Galactic Nuclei (AGN) associated with the clusters. The excess sources are concentrated within the virial radii of the clusters, with the largest excess observed near the cluster centers. The average radial profile of the excess X-ray sources of the cluster are well described by a power law (N(r) ~ r^\beta) with an index of \beta ~ -0.5. An initial analysis using literature results on the mean profile of member galaxies in massive X-ray selected clusters indicates that the fraction of galaxies hosting X-ray AGN rises with increasing clustercentric radius, being approximately 5 to 10 times higher near the virial radius than in the central regions. This trend is qualitatively similar to that observed for star formation in cluster member galaxies.Comment: 18 Pages, 10 Figures, Submitted to MNRAS. Please contact Steven Ehlert ([email protected]) for higher resolution figures. Updated to reflect small changes requested by referee. This version has been accepted into MNRA

    Microstructural differences in the thalamus and thalamic radiations in the congenitally deaf

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    There is evidence of both crossmodal and intermodal plasticity in the deaf brain. Here, we investigated whether sub-cortical plasticity, specifically of the thalamus, contributed to this reorganisation. We contrasted diffusion weighted magnetic resonance imaging data from 13 congenitally deaf and 13 hearing participants, all of whom had learnt British Sign Language after 10 years of age. Connectivity based segmentation of the thalamus revealed changes to mean and radial diffusivity in occipital and frontal regions, which may be linked to enhanced peripheral visual acuity, and differences in how visual attention is deployed in the deaf group. Using probabilistic tractography, tracts were traced between the thalamus and its cortical targets, and microstructural measurements were extracted from these tracts. Group differences were found in microstructural measurements of occipital, frontal, somatosensory, motor and parietal thalamo-cortical tracts. Our findings suggest there is sub-cortical plasticity in the deaf brain, and that white matter alterations can be found throughout the deaf brain, rather than being restricted to, or focussed in auditory cortex

    Tumor innate immunity primed by specific interferon-stimulated endogenous retroviruses.

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    Mesenchymal tumor subpopulations secrete pro-tumorigenic cytokines and promote treatment resistance1-4. This phenomenon has been implicated in chemorefractory small cell lung cancer and resistance to targeted therapies5-8, but remains incompletely defined. Here, we identify a subclass of endogenous retroviruses (ERVs) that engages innate immune signaling in these cells. Stimulated 3 prime antisense retroviral coding sequences (SPARCS) are oriented inversely in 3' untranslated regions of specific genes enriched for regulation by STAT1 and EZH2. Derepression of these loci results in double-stranded RNA generation following IFN-γ exposure due to bi-directional transcription from the STAT1-activated gene promoter and the 5' long terminal repeat of the antisense ERV. Engagement of MAVS and STING activates downstream TBK1, IRF3, and STAT1 signaling, sustaining a positive feedback loop. SPARCS induction in human tumors is tightly associated with major histocompatibility complex class 1 expression, mesenchymal markers, and downregulation of chromatin modifying enzymes, including EZH2. Analysis of cell lines with high inducible SPARCS expression reveals strong association with an AXL/MET-positive mesenchymal cell state. While SPARCS-high tumors are immune infiltrated, they also exhibit multiple features of an immune-suppressed microenviroment. Together, these data unveil a subclass of ERVs whose derepression triggers pathologic innate immune signaling in cancer, with important implications for cancer immunotherapy

    The Vehicle, Fall 2010

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    Table of ContentsPoetryFill Your Mouth with BerriesAaron Whitepage 1 RelationsJamie Van Allenpage 2 ExodusMegan Marie Olsonpage 4 Single FileRashelle McNairpage 7 The Aesthetic Value of the Moon, by CandlelightKathy Deckerpage 15 FactalsGabrielle Keigherpage 16 Day 5David Jacksonpage 17 Esta LloviendoHeather Gerrishpage 19 FacebrokeDarrin Gordonpage 23 5:08 pmNikki Riechertpage 24 Train TunnelsAshton Tembypage 34 VariationsKathy Deckerpage 35 WantRashelle McNairpage 36 FriendshipScott Maypage 37 Golden LandJacob Swansonpage 38 Last Night I DreamtAshton Tembypage 39 Smallest GestureScott Maypage 44 Somebody\u27s Hut in MexicoGinamarie Lobiancopage 45 Some Things You Just Can\u27t Tap Dance AroundClint Walkerpage 53 Prose Lamparus de DiosAaron Whitepage 8 Learning CurveScott Maypage 18 RocktonKatelyn Pfaffpage 20 Fatal DistractionSolomohn Ennispage 25 Noodle NonsenseGabrielle Keigherpage 41 AntarcticaMichael Payeapage 46 Special Features James K Johnson Award Winners: God is GraciousJohn Klyczekpage 57 To My Ever Growing ChestJennifer Hindespage 74 God\u27s ScapegoatJennifer Hindespage 76 Rape (Verb, Noun)Jennifer Hindespage 78 Featured Artist: Ashton Tembypage 81 Editor\u27s Pick: The Shooter by Patrick Hallpage 87 Chapbook 2010 Author:Kim Hunter-Perkinspage 114 About the Contributorspage 118 About the Editorspage 122https://thekeep.eiu.edu/vehicle/1092/thumbnail.jp

    The Vehicle, Fall 2010

    Get PDF
    Table of ContentsPoetryFill Your Mouth with BerriesAaron Whitepage 1 RelationsJamie Van Allenpage 2 ExodusMegan Marie Olsonpage 4 Single FileRashelle McNairpage 7 The Aesthetic Value of the Moon, by CandlelightKathy Deckerpage 15 FactalsGabrielle Keigherpage 16 Day 5David Jacksonpage 17 Esta LloviendoHeather Gerrishpage 19 FacebrokeDarrin Gordonpage 23 5:08 pmNikki Riechertpage 24 Train TunnelsAshton Tembypage 34 VariationsKathy Deckerpage 35 WantRashelle McNairpage 36 FriendshipScott Maypage 37 Golden LandJacob Swansonpage 38 Last Night I DreamtAshton Tembypage 39 Smallest GestureScott Maypage 44 Somebody\u27s Hut in MexicoGinamarie Lobiancopage 45 Some Things You Just Can\u27t Tap Dance AroundClint Walkerpage 53 Prose Lamparus de DiosAaron Whitepage 8 Learning CurveScott Maypage 18 RocktonKatelyn Pfaffpage 20 Fatal DistractionSolomohn Ennispage 25 Noodle NonsenseGabrielle Keigherpage 41 AntarcticaMichael Payeapage 46 Special Features James K Johnson Award Winners: God is GraciousJohn Klyczekpage 57 To My Ever Growing ChestJennifer Hindespage 74 God\u27s ScapegoatJennifer Hindespage 76 Rape (Verb, Noun)Jennifer Hindespage 78 Featured Artist: Ashton Tembypage 81 Editor\u27s Pick: The Shooter by Patrick Hallpage 87 Chapbook 2010 Author:Kim Hunter-Perkinspage 114 About the Contributorspage 118 About the Editorspage 122https://thekeep.eiu.edu/vehicle/1092/thumbnail.jp
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