32 research outputs found

    Emergence of nuclear saturation within Δ\Delta--full chiral effective field theory

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    Nuclear saturation is a key property of low-energy nuclear physics that depends on fine details of the nuclear interaction. Here we develop a unified statistical framework that uses realistic nuclear forces to link the theoretical modeling of finite nuclei and infinite nuclear matter. We construct fast and accurate emulators for nuclear-matter observables and employ an iterative history-matching approach to explore and reduce the enormous parameter domain of Δ\Delta-full chiral interactions. We find that model calibration including \nuc{16}{O} observables gives saturation predictions that are more accurate and have a smaller variance than those that only use few-body data.Comment: 5 pages, 3 figures, Supplemental Material provided as ancillary materia

    Emulating \emph{ab initio} computations of infinite nucleonic matter

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    We construct efficient emulators for the \emph{ab initio} computation of the infinite nuclear matter equation of state. These emulators are based on the subspace-projected coupled-cluster method for which we here develop a new algorithm called small-batch voting to eliminate spurious states that might appear when emulating quantum many-body methods based on a non-Hermitian Hamiltonian. The efficiency and accuracy of these emulators facilitate a rigorous statistical analysis within which we explore nuclear matter predictions for >106> 10^6 different parametrizations of a chiral interaction model with explicit Δ\Delta-isobars at next-to-next-to leading order. Constrained by nucleon-nucleon scattering phase shifts and bound-state observables of light nuclei up to \nuc{4}{He}, we use history matching to identify non-implausible domains for the low-energy coupling constants of the chiral interaction. Within these domains we perform a Bayesian analysis using sampling/importance resampling with different likelihood calibrations and study correlations between interaction parameters, calibration observables in light nuclei, and nuclear matter saturation properties.Comment: 16 pages, 15 figures, Supplemental Material provided as ancillary materia

    2023 International Consensus on Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Science With Treatment Recommendations: Summary From the Basic Life Support; Advanced Life Support; Pediatric Life Support; Neonatal Life Support; Education, Implementation, and Teams; and First Aid Task Forces

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    The International Liaison Committee on Resuscitation engages in a continuous review of new, peer-reviewed, published cardiopulmonary resuscitation and first aid science. Draft Consensus on Science With Treatment Recommendations are posted online throughout the year, and this annual summary provides more concise versions of the final Consensus on Science With Treatment Recommendations from all task forces for the year. Topics addressed by systematic reviews this year include resuscitation of cardiac arrest from drowning, extracorporeal cardiopulmonary resuscitation for adults and children, calcium during cardiac arrest, double sequential defibrillation, neuroprognostication after cardiac arrest for adults and children, maintaining normal temperature after preterm birth, heart rate monitoring methods for diagnostics in neonates, detection of exhaled carbon dioxide in neonates, family presence during resuscitation of adults, and a stepwise approach to resuscitation skills training. Members from 6 International Liaison Committee on Resuscitation task forces have assessed, discussed, and debated the quality of the evidence, using Grading of Recommendations Assessment, Development, and Evaluation criteria, and their statements include consensus treatment recommendations. Insights into the deliberations of the task forces are provided in the Justification and Evidence-to-Decision Framework Highlights sections. In addition, the task forces list priority knowledge gaps for further research. Additional topics are addressed with scoping reviews and evidence updates

    2023 International Consensus on Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Science With Treatment Recommendations: Summary From the Basic Life Support; Advanced Life Support; Pediatric Life Support; Neonatal Life Support; Education, Implementation, and Teams; and First Aid Task Forces

    Get PDF
    The International Liaison Committee on Resuscitation engages in a continuous review of new, peer-reviewed, published cardiopulmonary resuscitation and first aid science. Draft Consensus on Science With Treatment Recommendations are posted online throughout the year, and this annual summary provides more concise versions of the final Consensus on Science With Treatment Recommendations from all task forces for the year. Topics addressed by systematic reviews this year include resuscitation of cardiac arrest from drowning, extracorporeal cardiopulmonary resuscitation for adults and children, calcium during cardiac arrest, double sequential defibrillation, neuroprognostication after cardiac arrest for adults and children, maintaining normal temperature after preterm birth, heart rate monitoring methods for diagnostics in neonates, detection of exhaled carbon dioxide in neonates, family presence during resuscitation of adults, and a stepwise approach to resuscitation skills training. Members from 6 International Liaison Committee on Resuscitation task forces have assessed, discussed, and debated the quality of the evidence, using Grading of Recommendations Assessment, Development, and Evaluation criteria, and their statements include consensus treatment recommendations. Insights into the deliberations of the task forces are provided in the Justification and Evidence-to-Decision Framework Highlights sections. In addition, the task forces list priority knowledge gaps for further research. Additional topics are addressed with scoping reviews and evidence updates

    Nutrition impact symptoms are prognostic of quality of life and mortality after surgery for oesophageal cancer

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    We aimed to clarify the influence of nutritional problems after surgery for oesophageal cancer on functional health related quality of life (HRQOL) and survival. A prospective nationwide cohort of oesophageal cancer patients operated 2001⁻2005 in Sweden with 6 months postoperative follow up was used. Nutritional problems were categorized as low/moderate/severe/very severe based on weight loss and nutrition impact symptoms. An ANCOVA model calculated mean score differences (MD) with 95% confidence intervals (CI) of global quality of life (QOL), social and physical function scores, stratified by preoperative body mass index (BMI) <25 and ≥25. A Cox proportional hazards model produced hazard ratios (HR) with 95% CI for overall 5-year survival. Of 358 patients, 196 (55%) had preoperative BMI ≥25. Very severe and severe nutritional problems were associated with worse HRQOL in both BMI groups. E.g. MD's for global QOL among 'very severe' group was -29 (95% CI -39⁻-19) and -20 (95% CI -29⁻-11) for <25 and ≥25 BMI, respectively, compared to the 'low' group. Overall 5-year survival among 'very severe' and BMI ≥ 25 was worse; HR 4.6 (95% CI 1.4⁻15.6). Intense nutritional problems negatively impact postoperative HRQOL and combined with preoperative BMI ≥ 25 are associated with poorer 5-year overall survival representing a group needing greater clinical attention

    First aid glucose administration routes for symptomatic hypoglycaemia

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    Copyright © 2019 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd. This is a protocol for a Cochrane Review (Intervention). The objectives are as follows: To assess the effects of first aid glucose administration by any route appropriate for use by first aid providers (buccal, sublingual, oral, rectal) for symptomatic hypoglycaemia.status: publishe

    Potential organ donors after Out-of-Hospital Cardiac Arrest during a ten-year period in Stockholm, Sweden

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    Background: Donation after brain death (DBD) is current praxis in Sweden. Circulatory death is far more common. Donation from patients suffering Out-of-Hospital Cardiac Arrest (OHCA) may have the potential to increase the organ-donor pool. The aim of this study was to describe the potential donor pool and its characteristics if uncontrolled donation after circulatory death (uDCD) were to be implemented in the metropolitan area of Stockholm, Sweden. Methods: A retrospective analysis was made using data from the Swedish Register for cardiopulmonary resuscitation (SRCR) between 2006 and 2015. Evaluation of potential organ donors was made using selection criteria from five previously published protocols concerning uDCD. Results: When applying different criteria from each of the five studied protocols in a total of 9,793 cases of OHCA, between 7.5% (n = 732) and 1.5% (n = 150) of the patients were found to be potential candidates for uDCD. The median age of the sampled uDCD candidates in each protocol was between 48 and 57 years. Male donors were found in 67–76% of all cases. Conclusion: Although not taking important real-life limitations into account, our results indicate that implementation of a uDCD programme may substantially increase the number of potential organ donors in Stockholm
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