796 research outputs found

    Evidence use as sociomaterial practice? A qualitative study of decision-making on introducing service innovations in health care

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    A policy aspiration is that evidence should inform decision-making on introducing health service innovations. Internationally, innovation adoption has historically been slow and patchy. Three innovations in the English and Scottish National Health Service were analysed qualitatively: stroke service reconfiguration; revised national guidance on cancer referral; and ‘virtual’ glaucoma outpatient clinics. The authors identify three sociomaterial mechanisms through which evidence and context shape each other in decision-making: connecting, ordering, resisting. Shared preferences for research evidence enabled the medical profession to exert influence on decision-making, while other professions used alternative evidence. Implications for promoting inclusive public management around service innovations are discussed

    The clinical academic workforce of the future: a cross-sectional study of factors influencing career decision-making among clinical PhD students at two research-intensive UK universities

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    OBJECTIVES: To examine clinical doctoral students’ demographic and training characteristics, career intentions, career preparedness and what influences them as they plan their future careers. DESIGN AND SETTING: Online cross-sectional census surveys at two research-intensive medical schools in England in 2015–2016. PARTICIPANTS: All medically qualified PhD students (N=523) enrolled at the University of Oxford and University College London were invited to participate. We report on data from 320 participants (54% male and 44% female), who were representative by gender of the invited population. MAIN OUTCOME MEASURES: Career intentions. RESULTS: Respondents were mainly in specialty training, including close to training completion (25%, n=80), and 18% (n=57) had completed training. Half (50%, n=159) intended to pursue a clinical academic career (CAC) and 62% (n=198) were at least moderately likely to seek a clinical lectureship (CL). However, 51% (n=163) had little or no knowledge about CL posts. Those wanting a CAC tended to have the most predoctoral medical research experience (χ2 (2, N=305)=22.19, p=0.0005). Key reasons cited for not pursuing a CAC were the small number of senior academic appointments available, the difficulty of obtaining research grants and work-life balance. CONCLUSIONS: Findings suggest that urging predoctoral clinicians to gain varied research experience while ensuring availability of opportunities, and introducing more flexible recruitment criteria for CL appointments, would foster CACs. As CL posts are often only open to those still in training, the many postdoctoral clinicians who have completed training, or nearly done so, do not currently gain the opportunity the post offers to develop as independent researchers. Better opportunities should be accompanied by enhanced career support for clinical doctoral students (eg, to increase knowledge of CLs). Finally, ways to increase the number of senior clinical academic appointments should be explored since their lack seems to significantly influence career decisions

    Acidosis: The Prime Determinant of Depressed Sensorium in Diabetic Ketoacidosis

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    OBJECTIVE — The etiology of altered sensorium in diabetic ketoacidosis (DKA) remains unclear. Therefore, we sought to determine the origin of depressed consciousness in DKA. RESEARCH DESIGN AND METHODS — We analyzed retrospectively clinical and biochemical data of DKA patients admitted in a community teaching hospital. RESULTS — We recorded 216 cases, 21 % of which occurred in subjects with type 2 diabetes. Mean serum osmolality and pH were 304 31.6 mOsm/kg and 7.14 0.15, respectively. Acidosis emerged as the prime determinant of altered sensorium, but hyperosmolarity played a synergistic role in patients with severe acidosis to precipitate depressed sensorium (odds ratio 2.87). Combination of severe acidosis and hyperosmolarity predicted altered consciousness with 61 % sensitivity and 87 % specificity. Mortality occurred in 0.9 % of the cases. CONCLUSIONS — Acidosis was independently associated with altered sensorium, but hy-perosmolarity and serum “ketone ” levels were not. Combination of hyperosmolarity and acidosis predicted altered sensorium with good sensitivity and specificity. Diabetes Care 33:1837–1839, 2010 D iabetic ketoacidosis (DKA) is fre-quently associated with alteredmental status, which is correlated with the severity of the disease and prog-nosis (1). However, the etiology of de-pressed sensorium in DKA remains uncertain and controversial (2,3). Puta-tive factors in the pathogenesis of diabetic ketoacidotic coma include cerebral hypo-perfusion due to circulatory collapse and cerebral thrombosis (4), reduced cerebral glucose and oxygen utilization (1,5), aci-dosis (6,7), hyperosmolarity (8,9), and direct toxic effect of ketone bodies (2). Cerebral edema remains an important precipitant of altered consciousness in DKA, especially in children. Different studies have yielded con-flicting results regarding the role of these etiologic factors in the pathogenesis of al-tered mentation in patients with DKA. Hence, the origin of clouded sensorium in DKA remains to be fully elucidated. We undertook to study the etiology of de-pressed consciousness in patients admit-ted with DKA at the Regional Medica

    String Theory on Lorentzian AdS_3 in Minisuperspace

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    We investigate string theory on Lorentzian AdS_3 in the minisuperspace approximation. The minisuperspace model reduces to the worldline theory of a scalar particle in the Lorentzian AdS_3. The Hilbert space consists of normalizable wave functions, and we see that the unitarity of the theory (or the self-adjointness of the Hamiltonian) restricts the possible sets of wave functions. The restricted wave functions have the property of probability conservation (or current conservation) across the horizons. Two and three point functions are also computed. In the Euclidean model functional forms of these quantities are restricted by the SL(2,R) symmetry almost uniquely, however, in the Lorentzian model there are several ambiguities left. The ambiguities are fixed by the direct computation of overlaps of wave functions.Comment: 32 pages, no figures, minor changes, references adde

    On Minisuperspace Models of S-branes

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    In this note we reconsider the minisuperspace toy models for rolling and bouncing tachyons. We show that the theories require to choose boundary conditions at infinity since particles in an exponentially unbounded potential fall to infinity in finite world-sheet time. Using standard techniques from operator theory, we determine the possible boundary conditions and we compute the corresponding energy spectra and minisuperspace 3-point functions. Based on this analysis we argue in particular that world-sheet models of S-branes possess a discrete spectrum of conformal weights containing both positive and negative values. Finally, some suggestions are made for possible relations with previous studies of the minisuperspace theory.Comment: 24 pages, 3 figure

    Rapid Evaluation of the Special Measures for Quality and Challenged Provider Regimes: A Mixed-Methods Study

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    Background: Healthcare organisations in England rated as inadequate for leadership and one other domain enter Special Measures for Quality (SMQ) to receive support and oversight. A ‘watch list’ of challenged providers (CPs) at risk of entering SMQ also receive support. Knowledge is limited about whether the support interventions drive improvements in quality, their costs, and whether they strike the right balance between support and scrutiny. Objective: Analyse trust responses to the implementation of a) interventions for SMQ trusts and b) interventions for CP trusts to determine their impact on these organisations' capacity to achieve and sustain quality improvements. Design: Rapid research comprising five inter-related workstreams: 1. Literature review using systematic methods. 2. Analysis of policy documents and interviews at national level. 3. Eight multi-site, mixed method trust case studies. 4. Analysis of national performance and workforce indicators. 5. Economic analysis. Results: SMQ/CP were intended to be “support” programmes. SMQ/CP had an emotional impact on staff. Perceptions of NHSI interventions were mixed overall. Senior leadership teams were a key driver of change, with strong clinical input vital. Local systems have a role in improvement. Trusts focus efforts to improve across multiple domains. Internal and external factors contribute to positive performance trajectories. Nationally, only 15.8% of SMQ trusts exited within 24 months. Relative to national trends, entry into SMQ/CP corresponded to positive changes in 4-hour waits in Emergency Departments, mortality and delayed transfers of care. Trends in staff sickness and absence improved after trusts left SMQ/CP. There was some evidence that staff survey results improve. No association was found between SMQ/CP and referral to treatment times or cancer waiting times. The largest components of NHSI spending in case studies were interventions directed at 'training on cultural change' (33.6%), 'workforce quality and safety' (21.7%) and 'governance and assurance' (18.4%). Impact of SMQ on financial stability was equivocal; most trusts exiting SMQ experienced the same financial stability before and after exiting. Limitations: The rapid research design and one-year timeframe precludes longitudinal observations of trusts and local systems. The small number of indicators limited the quantitative analysis of impact. Measuring workforce effects was limited by data availability. Conclusions: Empirical evidence of positive impacts from SMQ/CP were identified, however, perceptions were mixed. Key lessons: • Time is needed to implement and embed changes. • Ways to mitigate emotional costs and stigma are needed. • Support strategies should be more trust specific. • Poor organisational performance needs to be addressed within local systems. • Senior leadership teams with stability, strong clinical input and previous SMQ experience helped enact change. • Organisation-wide quality improvement strategies and capabilities are needed. • Staff engagement and an open listening culture promote continuous learning and a quality improvement ‘mindset’, critical for sustainable improvement. • Need to consider level of sustainable funds required to improve patients’ outcomes. Future work: Evaluating recent changes to the regimes; role of local systems; longitudinal approaches. Study registration: Review protocol registered with PROSPERO (CRD: 42019131024). Funding: The National Institute for Health Research Health Services and Delivery Research programme (16/138/17 – Rapid Service Evaluation Research Team)

    Using institutional theory to analyse hospital responses to external demands for finance and quality in five european countries

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    OBJECTIVES: Given the impact of the global economic crisis, delivering better health care with limited finance grows more challenging. Through the lens of institutional theory, this paper explores pressures experienced by hospital leaders to improve quality and constrain spending, focusing on how they respond to these often competing demands. METHODS: An in-depth, multilevel analysis of health care quality policies and practices in five European countries including longitudinal case studies in a purposive sample of ten hospitals. RESULTS: How hospitals responded to the financial and quality challenges was dependent upon three factors: the coherence of demands from external institutions; managerial competence to align external demands with an overall quality improvement strategy, and managerial stability. Hospital leaders used diverse strategies and practices to manage conflicting external pressures. CONCLUSIONS: The development of hospital leaders' skills in translating external requirements into implementation plans with internal support is a complex, but crucial, task, if quality is to remain a priority during times of austerity. Increasing quality improvement skills within a hospital, developing a culture where quality improvement becomes embedded and linking cost reduction measures to improving care are all required
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