bluuebunny/crossref_metadata_2025_split huggingface dataset:
From Challenging the Text to Constructing It in a Large Economics Classroom: Revealing the Not-So-Common Sense of the Capitalist Mode of Production
Authors: Spotton Visano Brenda 
Published: December 2017

This paper recounts a large class teaching process designed to encourage student critique, debate, and engagement. It focuses on an example of one in-class, small group exercise of negotiating ownership claims on a capital good and its output. The communal outcomes that students themselves negotiate contradict their prior taken-for-granted belief in the “rightness” of the capitalist mode of production and offer the class an opportunity to reflect on principles of fairness in resource distribution. JEL Classification: A13, A22, B51
Low Levels of Physical Activity During Critical Illness and Weaning: The Evidence–Reality Gap
Authors: Connolly Bronwen A. , Mortimore Jessica L. , Douiri Abdel , Rose Joleen W. , Hart Nicholas , Berney Susan C. 
Published: December 2017

Background: Physical rehabilitation can benefit critically ill patients during intensive care unit (ICU) admission, but routine clinical practice remains inconsistent nor examined in prolonged mechanical ventilation patients transferred to a specialist ventilator weaning unit (VWU). Behavioral mapping is a sampling approach that allows detailed reporting of physical activity profiles. The objective of this study was to characterize the physical activity profile of critically ill patients in a UK ICU and VWU. Methods: Single-center, prospective observational study in a university teaching hospital. Patient observations, conducted Monday through Sunday from 08:30 am to 08:00 pm and for 1 minute every 10 minutes, included data points of patient location, people in attendance, and highest level of activity. Descriptive statistics were utilized to analyze and report data. Results: Forty-two ICU and 11 VWU patients were recruited, with 2646 and 693 observations, respectively, recorded. In the ICU, patients spent a median (interquartile range) of 100% (96%-100%) of the day (10.5 [10.0-10.5] hours) located in bed, with minimal/no activity for 99% (96%-100%) of the day (10.4 [9.7-10.5] hours). Nursing staff were most frequently observed in attendance with patients irrespective of ventilation or sedation status, although patients still spent approximately two-thirds of the day alone. Bed-to-chair transfer was the highest activity level observed. In the VWU, patients spent 94% (73%-100%) of the day (9.9 [7.7-10.5] hours) in bed and 56% (43%-60%) of time alone. Physical activity levels were higher and included ambulation. All physical activities occurred during physical rehabilitation sessions. Conclusions: These profiles of low physical activity behavior across both patients in the ICU and VWU highlight the need for targeted strategies to improve levels beyond therapeutic rehabilitation and support for a culture shift toward providing patients with, and engaging them in, a multidisciplinary, multiprofessional environment that optimizes overall physical activity.
Effectiveness and Safety of Magnesium Replacement in Critically Ill Patients Admitted to the Medical Intensive Care Unit in an Academic Medical Center: A Retrospective, Cohort Study
Authors: Hammond Drayton A. , Stojakovic Jelena , Kathe Niranjan , Tran Julie , Clem Oktawia A. , Erbach Kristina , King Jarrod 
Published: December 2017

Background: “Rules of thumb” for the replacement of electrolytes, including magnesium, in critical care settings are used, despite minimal empirical validation of their ability to achieve a target serum concentration. This study’s purpose was to evaluate the effectiveness and safety surrounding magnesium replacement in medically, critically ill patients with mild-to-moderate hypomagnesemia. Methods: This was a single-center, retrospective, observational evaluation of episodes of intravenous magnesium replacement ordered for patients with mild-to-moderate hypomagnesemia (1.0-1.9 mEq/L) admitted to a medical intensive care unit from May 2014 to April 2016. The primary effectiveness outcome, achievement of target serum magnesium concentration (≥2 mEq/L) compared to expected achievement using a “rule of thumb” estimation that 1 g intravenous magnesium sulfate raises the magnesium concentration 0.15 mEq/L, was tested using 1-sample z test. Logistic regression analysis was conducted to assess the effect of infusion rate on target achievement. Results: Of 152 days on which magnesium replacements were provided for 72 patients, a follow-up serum magnesium concentration was checked within 24 hours in 89 (58.6%) episodes. Of these 89 episodes, serum magnesium concentration reached target in only 49 (59.8%) episodes compared to an expected 89 (100%; P < .0001). There was no significant association between infusion rate and achievement of the target serum magnesium concentration (odds ratio: 0.962, 95% confidence interval: 0.411-2.256). Conclusions: Medically, critically ill patients who received nonprotocolized magnesium replacement achieved the target serum magnesium concentration less frequently than the “rule of thumb” estimation predicted.
Student Hunger on Campus: Food Insecurity Among College Students and Implications for Academic Institutions
Authors: Payne-Sturges Devon C. , Tjaden Allison , Caldeira Kimberly M. , Vincent Kathryn B. , Arria Amelia M. 
Published: December 2017

Purpose: To estimate the prevalence of food insecurity among students at a large mid-Atlantic publicly funded university; examine the association between food insecurity, demographic characteristics, potential financial risk factors, and self-reported physical and mental health and academic performance; and identify possible risk factors for food insecurity. Design: Cross-sectional survey. Setting: Large, public mid-Atlantic university. Participants: Two hundred thirty-seven undergraduate students. Measures: US Department of Agriculture (USDA) 18-item Household Food Security Survey Module (HFSSM) and questions on demographics, student status, economic factors, housing stability, living arrangements, academic performance, and self-rated physical health and depression symptoms. Analysis: Multivariate logistic regression analysis. Results: Among students surveyed, 15% were food insecure; an additional 16% were at risk of food insecurity. Students who were African American, other race/ethnicity, receiving multiple forms of financial aid, or experiencing housing problems were more likely to be food insecure or at the risk of food insecurity (Adjusted Odds Ratio [AOR] = 4.00, 95% confidence interval [CI] = 1.83-8.71, P value < .0001; AOR = 5.26, 95% CI = 1.85-14.98, P value = .002; AOR = 3.43, 95% CI = 1.85-6.37, P value <.001; AOR = 8.00, 95% CI = 3.57-17.93, P value < .0001, respectively). Food secure students were less likely to report depression symptoms than at-risk or food insecure students. Conclusion: Food insecurity among college students is an important public health concern that might have implications for academic performance, retention, and graduation rates. Universities that measure food insecurity among their students will be better positioned to advocate for policy changes at state and federal levels regarding college affordability and student financial assistance.
Aerodynamic optimisation of a winglet-cavity tip in a high-pressure axial turbine cascade
Authors: Zhou Zhihua , Chen Shaowen , Wang Songtao 
Published: December 2017

Tip clearance flow between rotating blades and the stationary casing in high-pressure turbines is very complex and is one of the most important factors influencing turbine performance. The rotor with a winglet-cavity tip is often used as an effective method to improve the loss resulting from the tip clearance flow. In this study, an aerodynamic geometric optimisation of a winglet-cavity tip was carried out in a linear unshrouded high-pressure axial turbine cascade. For the purpose of shaping the efficient winglet geometry of the rotor tip, a novel parameterisation method has been introduced in the optimisation procedure based on the computational fluid dynamics simulation and analysis. The reliability of a commercial computational fluid dynamics code with different turbulence models was first validated by contrasting with the experimental results, and the numerical total pressure loss and flow angle using the Baseline k-omega Model (BSL κ-ω model) shows a better agreement with the test data. Geometric parameterisation of blade tips along the pressure side and suction side was adopted to optimise the tip clearance flow, and an optimal winglet-cavity tip was proven to achieve lower tip leakage mass flow rate and total pressure loss than the flat tip and cavity tip. Compared to the numerical results of flat tip and cavity tip, the optimised winglet-cavity design, with the winglet along the pressure side and suction side, had lower tip leakage mass flow rate and total pressure loss. It offered a 35.7% reduction in the change ratio [Formula: see text]. In addition, the optimised winglet along pressure side and suction side, respectively, by using the parameterisation method was studied for investigating the individual effect of the pressure-side winglet and suction-side winglet on the tip clearance flow. It was found that the suction-side extension of the optimal winglet resulted in a greater reduction of aerodynamic loss and leakage mass flow than the pressure-side extension of the optimal winglet. Moreover, with the analysis based on the tip flow pattern, the numerical results show that the pressure-side winglet reduced the contraction coefficient, and the suction-side winglet reduced the aerodynamic loss effectively by decreasing the driving pressure difference near the blade tips, the leakage flow velocity, and the interaction between the leakage flow and the main flow. Overall, a better aerodynamic performance can be obtained by adopting the pressure-side and suction-side winglet-cavity simultaneously.
Reasons for cesarean and medically indicated deliveries in pregnancies in women with systemic lupus erythematosus
Authors: Eudy A M , Jayasundara M , Haroun T , Neil L , James A H , Clowse M E B 
Published: December 2017

Objective To determine reasons for cesarean and medically indicated deliveries in a registry of pregnant women with SLE compared to RA. Methods Pregnant women with SLE or RA were prospectively followed, and pregnancy outcomes were collected, including whether labor was spontaneous or medically indicated and delivery was vaginal or cesarean. Preterm birth was defined as a birth <37 weeks gestation. Differences in reasons for cesarean delivery and indication of delivery between term and preterm births were determined by Fisher’s exact test. Results Compared to RA pregnancies, SLE pregnancies had modestly higher rates of preterm birth (24% SLE vs 14% RA), pre-eclampsia (15% SLE vs 7% RA), and cesarean delivery (48% SLE vs 30% RA). The majority of preterm births among women with SLE were indicated (70%), most commonly for pre-eclampsia or the health of the infant or mother. The majority of preterm births among women with RA, however, were spontaneous, primarily due to premature rupture of membranes. Conclusion Pre-eclampsia and maternal SLE activity appear to be the key drivers for the high rate of preterm birth and medically indicated delivery in SLE. This contrasts with RA, where preterm labor is most often due to spontaneous onset of labor.
The choice of methods in determining the optimal cut-off value for quantitative diagnostic test evaluation
Authors: Hajian-Tilaki Karimolla 
Published: December 2017

Introduction The choice of criteria in determining optimal cut-off value is a matter of concern in quantitative diagnostic tests. Several indexes such as Youden’s index, Euclidean index, product of sensitivity and specificity in receiver operator characteristic space and diagnostic odds ratio have been used in clinical practices but their advantages and limitations are not well understood by clinicians. This study aimed to compare these methods in determining optimal cut-off values for quantitative diagnostic test. Methods The different configurations of binormal and bilogistic distributions with equal and unequal variances for nondiseased and diseased subjects were examined. The cut-off values with increment of 0.1 in Z-scale were varied. Then, the Youden’s index, Euclidean index, product of sensitivity and specificity, and diagnostic odds ratio were calculated over various cut-off values under distributional assumptions with confirmed parameters. Results According to the obtained data from binormal model and equal variances, the optimal cut-off values derived from Youden’s index, Euclidean index, and product method were similar but the diagnostic odds ratio yielded either extremely low or extremely high optimal cut-off value. For bilogistic pair distributions with equal variances, the Youden’s, Euclidean indexes and product method resulted in an identical cut-off value but the diagnostic odds ratio was constant over various cut-points. By both binormal and bilogistic data with more variations in nondiseased population, the Youden’s index produced a higher sensitive optimal cut-off value; but with more variation for diseased distribution, the Euclidean index showed a more sensitive optimal cut-off. For bilogistic data with unequal variance, the log(diagnostic odds ratio) had a straight line relationship over cut-off values with either positive or negative slope. Conclusion As a measure of association, diagnostic odds ratio cannot be informative in determining an optimal cut-off value. The advantage of receiver operator characteristic analysis to obtain the optimal cut-off value is to use Youden’s index, Euclidean index, or product index which is recommended. The choice between them depends on variability of test results in diseased and nondiseased subjects and the desired sensitivity.
Neonatal screening improves sickle cell disease clinical outcome in Belgium
Authors: Lê Phu-Quoc , Ferster Alina , Dedeken Laurence , Vermylen Christiane , Vanderfaeillie Anna , Rozen Laurence , Heijmans Catherine , Huybrechts Sophie , Devalck Christine , Cotton Frédéric , Ketelslegers Olivier , Dresse Marie-Françoise , Fils Jean-François , Gulbis Béatrice 
Published: December 2017

Objectives To compare the outcomes of sickle cell disease patients diagnosed through neonatal screening with those who were not. Methods In an observational multicenter study in Belgium, 167 screened and 93 unscreened sickle cell disease patients were analyzed for a total of 1116 and 958 patient-years of follow-up, respectively. Both groups were compared with propensity score analysis, with patients matched on three covariates (gender, genotype, and central Africa origin). Bonferroni correction was applied for all comparisons. Results Kaplan–Meier estimates of survival without bacteremia were significantly higher in the screened group than the unscreened group (94.47%; [95% CI, 88.64–97.36%] versus 83.78% [95% CI, 72.27–90.42%]), p = 0.032. Non-significant differences between both groups were reported for survival without acute chest syndrome, acute anemia, cerebral complication, severe infection, and vaso-occlusive crisis. Significantly lower hospitalization rate and days per 100 patient-years were observed in the screened compared with the unscreened group (0.27 vs. 0.63 and 1.25 vs. 2.82, p = 0.0006 and <0.0001). Conclusion These data confirm the benefit of a neonatal screening programme in reducing bacteremia and hospitalization.
Ethical decision-making regarding infant viability: A discussion
Authors: Kelly Janet , Welch Emma 
Published: December 2017

Background: There are no universally agreed rules of healthcare ethics. Ethical decisions and standards tend to be linked to professional codes of practice when dealing with complex issues. Objectives: This paper aims to explore the ethical complexities on who should decide to give infants born on the borderline of viability lifesaving treatment, parents or the healthcare professionals. Method: The paper is a discussion using the principles of ethics, professional codes of practice from the UK, Nursing Midwifery Council and UK legal case law and statute. Healthcare professionals' experiences that influence parental decision are also considered. Findings & Discussion: There are considerable barriers to an effective discussion taking place in an environment where clinical decisions have to be made quickly once the baby is born. This is compounded by the need and respect for parental autonomy and the difficulties they face when making a best interest's decision knowing that this could cause more harm than good for their infant child and balancing any decision they make with quality of life. Conclusion: On deciding whether to give lifesaving treatment born at the borderline of viability, it should be a joint decision between the parents and the neonatal team.
Nurses’ moral experiences of assisted death: A meta-synthesis of qualitative research
Authors: Elmore James , Wright David Kenneth , Paradis Maude 
Published: December 2017

Background: Legislative changes are resulting in assisted death as an option for people at the end of life. Although nurses’ experiences and perspectives are underrepresented within broader ethical discourses about assisted death, there is a small but significant body of literature examining nurses’ experiences of caring for people who request this option. Aim: To synthesize what has been learned about nurses’ experiences of caring for patients who request assisted death and to highlight what is morally at stake for nurses who undertake this type of care. Design: Qualitative meta-synthesis. Methods: Six databases were searched: CINAHL, Medline, EMBASE, Joanna Briggs Institute, PsycINFO, and Web of Science. The search was completed on 22 October 2014 and updated in February 2016. Of 879 articles identified from the database searches, 16 articles were deemed relevant based on inclusion criteria. Following quality appraisal, 14 studies were retained for analysis and synthesis. Results: The moral experience of the nurse is (1) defined by a profound sense of responsibility, (2) shaped by contextual forces that nurses navigate in everyday end-of-life care practice, and (3) sustained by intra-team moral and emotional support. Discussion: The findings of this synthesis support the view that nurses are moral agents who are deeply invested in the moral integrity of end-of-life care involving assisted death. The findings further demonstrate that to fully appreciate the ethics of assisted death from a nursing standpoint, it is necessary to understand the broader constraints on nurses’ moral agency that operate in everyday end-of-life care. Ethical considerations: Research ethics board approval was not required for this synthesis of previously published literature. Conclusion: In order to understand how to enact ethical practice in the area of assisted death, the moral experiences of nurses should be investigated and foregrounded.
Direct-to-consumer advertising effects on nurse–patient relationship, authority, and prescribing appropriateness
Authors: Filipova Anna A 
Published: December 2017

Background: Discussing direct-to-consumer advertising of prescription drugs during a visit could affect prescribing practices and provider–patient relationship. Research objectives: The study examines advanced practice nurse prescribers’ perceptions of direct-to-consumer advertising and its effects on nurse–patient relationship, prescriptive authority, and appropriateness of patient clinical requests. Research design: A cross-sectional survey design was implemented. Participants and research context: The random sample consisted of 316 nurses (27.17% response rate) in one of the Midwestern states in the United States. Pearson’s chi-square analysis and multiple/multinomial logistic regression analyses were used. Ethical considerations: Permission to conduct the study was obtained from the university’s Institutional Review Board. Participation was voluntary, and measures were taken to protect the anonymity and confidentiality of consenting participants. Findings: Most nurses (69%) believed that patients were “poor or very poor” at assessing the relevance of drug advertisements, 61% reported that the increase in drugs advertisements directed at patient was “a bad or a very bad thing,” and only 16% thought the advertisements were accurate to “a very or to a great extent.” Improved nurse–patient relationship was associated with factors such as the patient not bringing printed material, seeking nurse’s opinion only, taking responsibility for their health, and not challenging nurse’s prescriptive authority. Discussion: Advertising discussion during a visit could improve as well as pose a challenge to a nurse–patient relationship and nurse’s prescriptive authority. Conclusion: The positives of discussing advertising information can be maximized and the negatives minimized through enhanced interpersonal nurse–patient communication.
Meaning in life of older persons: An integrative literature review
Authors: Hupkens Susan , Machielse Anja , Goumans Marleen , Derkx Peter 
Published: December 2017

Background: Meaning in life of older persons is related to well-being, health, quality of life, and “good life.” However, the topic is scarcely covered in nursing literature. Objective: The aim of this integrative review for nurses is to synthesize knowledge from scholarly literature to provide insight into how older persons find meaning in life, what are influencing circumstances, and what are their sources of meaning. The review serves as a starting point for including meaning in life of older persons as a major concern for nurses in their role as health promoters. Method: An integrative review was performed including empirical research literature and texts on theoretical perspectives. Ethical consideration: Researches agree with ethical codes for research of universities in the Netherlands. For literature reviews no additional procedures are necessary according to Dutch law. Findings: A total of 44 heterogeneous texts were included in this review. Finding meaning in life is challenging for older persons. Older persons find meaning through a developmental process, by creating and discovering. Meaning in life is found in connection with self and others. Health, living together, high socio-economic status, social relations, activities, and religion are associated with experiencing meaning in later life. The main source of meaning in life of older persons is human relationships. Other sources of meaning in life vary by age and culture. Discussion: The review provides insight into meaning in life of older persons. There are several gaps in knowledge: literature is culturally biased, research on discovery of meaning and daily meaning is limited, and research from a nursing perspective is lacking. In practice, nurses have many opportunities to attune to meaning in life of patients. Further development of competence and training are needed. Conclusion: Older persons find meaning in life through different processes. Meaning in life is associated with the circumstances old persons live in. Human relationship is the major source of meaning. The knowledge from this review is a necessary knowledge base for nurses to include meaning in life of older patients in care. Further research is needed to explore the role of nurses.