829 research outputs found
Detection of the United States Neisseria meningitidis urethritis clade in the United Kingdom, August and December 2019 - emergence of multiple antibiotic resistance calls for vigilance.
Since 2015 in the United States (US), the US Neisseria meningitidis urethritis clade (US_NmUC) has caused a large multistate outbreak of urethritis among heterosexual males. Its 'parent' strain caused numerous outbreaks of invasive meningococcal disease among men who have sex with men in Europe and North America. We highlight the arrival and dissemination of US_NmUC in the United Kingdom and the emergence of multiple antibiotic resistance. Surveillance systems should be developed that include anogenital meningococci
A report on the study of land-sourced pollutants and their impacts on water quality in and adjacent to the Great Barrier Reef: an assessment to guide the development of management plans to halt any decline in the water quality of river catchments draining to the Reef, as a result of land-based pollution, and to achieve the long-term goal of reversing any trend in declining water quality
Includes 'Summary statement of the Reef Science Panel regarding water quality in and adjacent to the Great Barrier Reef
Clinical phenotype of severe and moderate haemophilia: who should receive prophylaxis and what is the target trough level?
Introduction
One of the most often stated tenets of haemophilia care is that prophylaxis converts a person from a severe to a moderate phenotype. In this review, we argue that this is not an accurate assumption and that people on prophylaxis predominantly have factor VIII/IX levels in the mild range.
Moderate haemophilia and prophylaxis
People with moderate haemophilia, who are treating with onâdemand regimens, experience joint bleeds and often develop significant arthropathy. This is especially true for people with a baseline level of 1â3 IU/dl, as first reported 55 years ago, and confirmed in more recent studies. Evidence is emerging suggesting that people with severe haemophilia who are using prophylaxis have better musculoskeletal outcomes than people with moderate haemophilia treated episodically.
Trough levels
The debate around the optimum trough level whilst on prophylaxis is ongoing. It is not appropriate to extrapolate information about baseline levels to recommendations about target trough levels on prophylaxis because these are different situations. Studies are emerging that support higher target trough levels than previously used, but in spite of this, the aim of achieving zero bleeds remains elusive with both factor replacement and nonâreplacement therapies.
Conclusions
We recommend that people with moderate haemophilia, especially those with a baseline of 1â3 IU/dl, should be offered prophylaxis based on the same criteria as people with severe haemophilia. Trough levels should be maintained above 3 IU/dl or higher if a level of 3 IU/dl does not control breakthrough bleeding and prophylaxis should be tailored to the bleeding phenotype. This advice is in line with recently published guidelines from the World Federation of Haemophilia and the UK Haemophilia Centre Doctorsâ Organisation
Recommended from our members
Stress-relaxation and fatigue behaviour of synthetic brow-suspension materials.
Ptosis describes a low position of the upper eyelid. When this condition is due to poor function of the levator palpebrae superioris muscle, responsible for raising the lid, "brow-suspension" ptosis correction is usually performed, which involves internally attaching the malpositioned eyelid to the forehead musculature using brow-suspension materials. In service, such materials are exposed to both rapid tensile loading and unloading sequences during blinking, and a more sustained tensile strain during extended periods of closure. In this study, various mechanical tests were conducted to characterise and compare some of commonly-used synthetic brow-suspension materials (Prolene(Âź), Supramid Extra(Âź) II, Silicone rods (Visitec(Âź) Seiff frontalis suspension set) and Mersilene(Âź) mesh) for their time-dependent response. At a given constant tensile strain or load, all of the brow-suspension materials exhibited stress-relaxation or creep, with Prolene(Âź) having a statistically different relaxation or creep ratio as compared with those of others. Uniaxial tensile cyclic tests through preconditioning and fatigue tests demonstrated drastically different time-dependent response amongst the various materials. Although the tests generated hysteresis force-strain loops for all materials, the mechanical properties such as the number of cycles required to reach the steady-state, the reduction in the peak force, and the cyclic energy dissipation varied considerably. To reach the steady-state, Prolene(Âź) and the silicone rod required the greatest and the least number of cycles, respectively. Furthermore, the fatigue tests at physiologically relevant conditions (15% strain controlled at 6.5 Hz) demonstrated that the reduction in the peak force during 100,000 cycles ranged from 15% to 58%, with Prolene(Âź) and the silicone rod exhibiting the greatest and the least value, respectively. Many factors need to be considered to select the most suitable brow-suspension material for ptosis correction. These novel data on the mechanical time-dependent performance could therefore help to guide clinicians in their decision-making process for optimal surgical outcome.This study was supported by a knowledge exchange and enterprise funding (âDiscovery to useâ) to the authors at University College London (UCL). Authors Ezra and Rose acknowledge funding by the Department of Health through the National Institute for Health Research to Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology Biomedical Research Centre. All the mechanical testing was performed at Cambridge University and we are very grateful for the facilities provided.This is the accepted manuscript. The final version is available from Elsevier at http://www.sciencedirect.com/science/article/pii/S1751616114003452#
An unfolding signifier: London's Baltic Exchange in Tallinn
In the summer of 2007 an unusual cargo arrived at Muuga and Paldiski harbors outside Tallinn. It consisted of nearly 50 containers holding over 1,000 tons of building material ranging from marble columns, staircases and fireplaces, to sculpted allegorical figures, wooden paneling and old-fashioned telephone booths. They were once part of the Baltic Exchange in the City of London. Soon they will become facets of the landscape of Tallinn. The following article charts this remarkable story and deploys this fragmented monument to analyze three issues relating to the Estonian capital: the relocation of the âBronze Soldierâ, the demolition of the Sakala Culture Center, and Tallinnâs future role as European Cultural Capital in 2011
Interventions to improve perinatal outcomes among migrant women in high-income countries: a systematic review protocol
INTRODUCTION: Women who are migrants and who are pregnant or postpartum are at high risk of poorer perinatal outcomes compared with host country populations due to experiencing numerous additional stressors including social exclusion and language barriers. High-income countries (HICs) host many migrants, including forced migrants who may face additional challenges in the peripartum period. Although HICs' maternity care systems are often well developed, they are not routinely tailored to the needs of migrant women. The primary objective will be to determine what interventions exist to improve perinatal outcomes for migrant women in HICs. The secondary objective will be to explore the effectiveness of these interventions by exploring the impact on perinatal outcomes. The main outcomes of interest will be rates of preterm birth, birth weight, and number of antenatal or postnatal appointments attended. METHODS AND ANALYSIS: This protocol follows the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) Protocols guidelines. EMBASE, EMCARE, MEDLINE and PsycINFO, CENTRAL, Scopus, CINAHL Plus, and Web of Science, as well as grey literature sources will be searched from inception up to December 2022. We will include randomised controlled trials, quasi-experimental and interventional studies of interventions, which aim to improve perinatal outcomes in any HIC. There will be no language restrictions. We will exclude studies presenting only qualitative outcomes and those including mixed populations of migrant and non-migrant women. Screening and data extraction will be completed by two independent reviewers and risk of bias will be assessed using the Quality Assessment Tool for Quantitative Studies. If a collection of suitably comparable outcomes is retrieved, we will perform meta-analysis applying a random effects model. Presentation of results will comply with guidelines in the Cochrane Handbook of Systematic Reviews of Interventions and the PRISMA statement. ETHICS AND DISSEMINATION: Ethical approval is not required. Results will be submitted for peer-reviewed publication and presented at national and international conferences. The findings will inform the work of the Lancet Migration European Hub. PROSPERO REGISTRATION NUMBER: CRD42022380678
Paired comparisons of carbon exchange between undisturbed and regenerating stands in four managed forests in Europe
The effects of harvest on European forest net ecosystem exchange (NEE) of carbon and its photosynthetic and respiratory components (GPP (gross primary production) and TER (total ecosystem respiration)) were examined by comparing four pairs of mature/harvested sites in Europe via a combination of eddy covariance measurements and empirical modeling. Three of the comparisons represented high coniferous forestry (spruce in Britain, and pines in Finland and France), while a coppice-with-standard oak plantation was examined in Italy.
While every comparison revealed that harvesting converted a mature forest carbon sink into a carbon source of similar magnitude, the mechanisms by which this occurred were very different according to species or management practice. In Britain, Finland, and France the annual sink (source) strength for mature (clear-cut) stands was estimated at 496 (112), 138 (239), and 222 (225) g C mâ2, respectively, with 381 (427) g C mâ2 for the mature (coppiced) stand in Italy. In all three cases of high forestry in Britain, Finland, and France, clear-cutting crippled the photosynthetic capacity of the ecosystem â with mature (clear-cut) GPP of 1970 (988), 1010 (363), and 1600 (602) g C mâ2â and also reduced ecosystem respiration to a lesser degree â TER of 1385 (1100), 839 (603), and 1415 (878) g C mâ2, respectively. By contrast, harvesting of the coppice oak system provoked a burst in respiration â with mature (clear-cut) TER estimated at 1160 (2220) gC mâ2â which endured for the 3 years sampled postharvest. The harvest disturbance also reduced GPP in the coppice system â with mature (clear-cut) GPP of 1600 (1420) g C mâ2â but to a lesser extent than in the coniferous forests, and with near-complete recovery within a few years. Understanding the effects of harvest on the carbon balance of European forest systems is a necessary step towards characterizing carbon exchange for timberlands on large scales
Better together: A qualitative exploration of womenâs perceptions and experiences of group antenatal care
Problem
Childbearing women from socio-economically disadvantaged communities and minority ethnic groups are less likely to access antenatal care and experience more adverse pregnancy outcomes.
Background
Group antenatal care aims to facilitate information sharing and social support. It is associated with higher rates of attendance and improved health outcomes.
Aims
To assess the acceptability of a bespoke model of group antenatal care (Pregnancy Circles) in an inner city community in England, understand how the model affects womenâs experiences of pregnancy and antenatal care, and inform further development and testing of the model.
Methods
A two-stage qualitative study comprising focus groups with twenty six local women, followed by the implementation of four Pregnancy Circles attended by twenty four women, which were evaluated using observations, focus groups and semi-structured interviews with participants. Data were analysed thematically.
Findings
Pregnancy Circles offered an appealing alternative to standard antenatal care and functioned as an instrument of empowerment, mediated through increased learning and knowledge sharing, active participation in care and peer and professional relationship building. Multiparous women and women from diverse cultures sharing their experiences during Circle sessions was particularly valued. Participants had mixed views about including partners in the sessions.
Conclusions
Group antenatal care, in the form of Pregnancy Circles, is acceptable to women and appears to enhance their experiences of pregnancy. Further work needs to be done both to test the findings in larger, quantitative studies and to find a model of care that is acceptable to women and their partners.
Abbreviations
FG, focus group; gANC, group antenatal care;
REACH, research for equitable antenatal care and health;
UK, United Kingdom; USA, United States of Americ
Recommended from our members
What are the mechanisms of effect of group antenatal care? A systematic realist review and synthesis of the literature
Background
There is growing interest in the benefits of group models of antenatal care. Although clinical reviews exist, there have been few reviews that focus on the mechanisms of effect of this model.
Methods
We conducted a realist review using a systematic approach incorporating all data types (including non-research and audiovisual media), with synthesis along Context-Intervention-Mechanism-Outcome (CIMO) configurations.
Results
A wide range of sources were identified, yielding 100 relevant sources in total (89 written and 11 audiovisual). Overall, there was no clear pattern of âwhat works for whom, in what circumstancesâ although some studies have identified clinical benefits for those with more vulnerability or who are typically underserved by standard care. Findings revealed six interlinking mechanisms, including: social support, peer learning, active participation in health, health education and satisfaction or engagement with care. A further, relatively under-developed theory related to impact on professional practice. An overarching mechanism of empowerment featured across most studies but there was variation in how this was collectively or individually conceptualised and applied.
Conclusions
Mechanisms of effect are amplified in contexts where inequalities in access and delivery of care exist, but poor reporting of populations and contexts limited fuller exploration. We recommend future studies provide detailed descriptions of the population groups involved and that they give full consideration to theoretical underpinnings and contextual factors
- âŠ