| 1. |
- Ademuyiwa, Adesoji O., et al.
(author)
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Determinants of morbidity and mortality following emergency abdominal surgery in children in low-income and middle-income countries
- 2016
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In: BMJ Global Health. - : BMJ Publishing Group Ltd. - 2059-7908. ; 1:4
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Journal article (peer-reviewed)abstract
- Background: Child health is a key priority on the global health agenda, yet the provision of essential and emergency surgery in children is patchy in resource-poor regions. This study was aimed to determine the mortality risk for emergency abdominal paediatric surgery in low-income countries globally.Methods: Multicentre, international, prospective, cohort study. Self-selected surgical units performing emergency abdominal surgery submitted prespecified data for consecutive children aged <16 years during a 2-week period between July and December 2014. The United Nation's Human Development Index (HDI) was used to stratify countries. The main outcome measure was 30-day postoperative mortality, analysed by multilevel logistic regression.Results: This study included 1409 patients from 253 centres in 43 countries; 282 children were under 2 years of age. Among them, 265 (18.8%) were from low-HDI, 450 (31.9%) from middle-HDI and 694 (49.3%) from high-HDI countries. The most common operations performed were appendectomy, small bowel resection, pyloromyotomy and correction of intussusception. After adjustment for patient and hospital risk factors, child mortality at 30 days was significantly higher in low-HDI (adjusted OR 7.14 (95% CI 2.52 to 20.23), p<0.001) and middle-HDI (4.42 (1.44 to 13.56), p=0.009) countries compared with high-HDI countries, translating to 40 excess deaths per 1000 procedures performed.Conclusions: Adjusted mortality in children following emergency abdominal surgery may be as high as 7 times greater in low-HDI and middle-HDI countries compared with high-HDI countries. Effective provision of emergency essential surgery should be a key priority for global child health agendas.
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| 2. |
- Beal, Jacob, et al.
(author)
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Robust estimation of bacterial cell count from optical density
- 2020
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In: Communications Biology. - : Springer Science and Business Media LLC. - 2399-3642. ; 3:1
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Journal article (peer-reviewed)abstract
- Optical density (OD) is widely used to estimate the density of cells in liquid culture, but cannot be compared between instruments without a standardized calibration protocol and is challenging to relate to actual cell count. We address this with an interlaboratory study comparing three simple, low-cost, and highly accessible OD calibration protocols across 244 laboratories, applied to eight strains of constitutive GFP-expressing E. coli. Based on our results, we recommend calibrating OD to estimated cell count using serial dilution of silica microspheres, which produces highly precise calibration (95.5% of residuals <1.2-fold), is easily assessed for quality control, also assesses instrument effective linear range, and can be combined with fluorescence calibration to obtain units of Molecules of Equivalent Fluorescein (MEFL) per cell, allowing direct comparison and data fusion with flow cytometry measurements: in our study, fluorescence per cell measurements showed only a 1.07-fold mean difference between plate reader and flow cytometry data.
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| 4. |
- Clear, Tony, et al.
(author)
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Challenges and recommendations for the design and conduct of global software engineering courses : A systematic review
- 2016
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In: Proceedings of The 2015 Iticse Conference on Working Group Reports (Iticse-Wgp'15). - New York : ACM Press. - 9781450341462 ; , s. 1-39
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Conference paper (peer-reviewed)abstract
- Context: Global Software Engineering (GSE) has become the predominant form of software development for global companies and has given rise to a demand for students trained in GSE. In response, universities are developing courses and curricula around GSE and researchers have begun to disseminate studies of these new approaches.Problem: GSE differs from most other computer science fields, however, in that practice is inseparable from theory. As a result, educators looking to create GSE courses face a daunting task: integrating global practice into the local classroom.Aim: This study aims to ameliorate the very difficult task of teaching GSE by delineating the challenges and providing some recommendations for overcoming them.Method: To meet our aims we pose two research questions ("When teaching GSE to students in Higher Education, what are the (a) challenges, and (b) recommendations for addressing them") and then conduct a systematic literature review (SLR) to determine the answers to these questions. Our SLR follows a carefully designed and validated protocol.Results: We found 82 papers that addressed our research questions. Our findings indicate that in addition to the challenges posed by GSE in general, particular problems arise in educational situations. The majority of these challenges fall into the "global distance" category, though teamwork challenges and people issues (such as trust) also commonly arise. Organizational differences between institutions, differing skill sets between students in different locations, and varying cultural work norms, for example, all operate within educational settings in quite different ways than in professional development teams. Integrating cultural training, conducting teamwork exercises to build trust, and instructor monitoring of team communication are all examples of techniques that have been used successfully by educators according to our review.Conclusion: Despite the severity of the challenges in GSE education, many institutions have successfully developed courses and curricula targeting GSE. Indeed, for each of the challenges we have identified in the literature there are numerous recommendations for overcoming them. Instructors can use the recommendations given in this study as a starting point to running successful GSE courses.
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| 5. |
- Clear, Tony, et al.
(author)
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Developments in Global Software Engineering Education
- 2016
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In: 2016 IEEE FRONTIERS IN EDUCATION CONFERENCE (FIE). - 9781509017904
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Conference paper (peer-reviewed)abstract
- An ITiCSE 2015 conference working group report has recently delivered a comprehensive systematic review of the literature addressing the challenges and solutions in teaching global software engineering courses. In this panel session, a group of authors of that report will review the findings, and present their own views on teaching such courses, the pros and cons and their own motivations and experiences, together with strategies that have proven effective. We argue that these courses are critical for preparing students for practice as software engineers in today's global settings, but they are certainly not for the faint-hearted. After the review and presentation of position statements by panelists there will be a question and answer session with the audience and a discussion elaborating on the next frontiers in research and practice for global software engineering education.
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| 6. |
- Daniels, Pablo P., et al.
(author)
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A new species and a new combination of Rhodophana (Entolomataceae, Agaricales) from Africa
- 2017
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In: Phytotaxa. - : Magnolia Press. - 1179-3155 .- 1179-3163. ; 306:3, s. 223-233
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Journal article (peer-reviewed)abstract
- Multiple collections of a new member of the Entolomataceae were found in W National Park of Niger during a survey of macrofungi. This new species with a dark reddish brown scaly pileus surface and a yellow stipe belongs in the genus Rhodophana of the Rhodocybe-Clitopilus clade in the Entolomataceae. Using a three-gene analysis of the phylogenetic position of Rhodophana flavipes it is most closely related to the recently described Rhodophana squamulosa from India and is a sister taxon to Rhodophana nitellina and R. melleopallens. Micromorphological examination of the type of Rhodocybe fibulata, another African species with a scaly cap, confirms that it belongs in Rhodophana, thus a new combination Rhodophana fibulata is proposed.
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| 7. |
- Levin, Johannes, et al.
(author)
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α-Synuclein seed amplification assay detects Lewy body co-pathology in autosomal dominant Alzheimer's disease late in the disease course and dependent on Lewy pathology burden
- 2024
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In: Alzheimer's and Dementia. - 1552-5260. ; 20:6, s. 4351-4365
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Journal article (peer-reviewed)abstract
- INTRODUCTION: Amyloid beta and tau pathology are the hallmarks of sporadic Alzheimer's disease (AD) and autosomal dominant AD (ADAD). However, Lewy body pathology (LBP) is found in ≈ 50% of AD and ADAD brains. METHODS: Using an α-synuclein seed amplification assay (SAA) in cerebrospinal fluid (CSF) from asymptomatic (n = 26) and symptomatic (n = 27) ADAD mutation carriers, including 12 with known neuropathology, we investigated the timing of occurrence and prevalence of SAA positive reactivity in ADAD in vivo. RESULTS: No asymptomatic participant and only 11% (3/27) of the symptomatic patients tested SAA positive. Neuropathology revealed LBP in 10/12 cases, primarily affecting the amygdala or the olfactory areas. In the latter group, only the individual with diffuse LBP reaching the neocortex showed α-synuclein seeding activity in CSF in vivo. DISCUSSION: Results suggest that in ADAD LBP occurs later than AD pathology and often as amygdala- or olfactory-predominant LBP, for which CSF α-synuclein SAA has low sensitivity. Highlights: Cerebrospinal fluid (CSF) real-time quaking-induced conversion (RT-QuIC) detects misfolded α-synuclein in ≈ 10% of symptomatic autosomal dominant Alzheimer's disease (ADAD) patients. CSF RT-QuIC does not detect α-synuclein seeding activity in asymptomatic mutation carriers. Lewy body pathology (LBP) in ADAD mainly occurs as olfactory only or amygdala-predominant variants. LBP develops late in the disease course in ADAD. CSF α-synuclein RT-QuIC has low sensitivity for focal, low-burden LBP.
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| 8. |
- Loeffen, Erik A. H., et al.
(author)
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Reducing pain in children with cancer : Methodology for the development of a clinical practice guideline
- 2019
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In: Pediatric Blood & Cancer. - : Wiley. - 1545-5009 .- 1545-5017. ; 66:6
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Journal article (peer-reviewed)abstract
- Although pain is one of the most prevalent and bothersome symptoms children with cancer experience, evidence-based guidance regarding assessment and management is lacking. With 44 international, multidisciplinary healthcare professionals and nine patient representatives, we aimed to develop a clinical practice guideline (following GRADE methodology), addressing assessment and pharmacological, psychological, and physical management of tumor-, treatment-, and procedure-related pain in children with cancer. In this paper, we present our thorough methodology for this development, including the challenges we faced and how we approached these. This lays the foundation for our clinical practice guideline, for which there is a high clinical demand.
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| 10. |
- Pironi, Loris, et al.
(author)
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Characteristics of adult patients with chronic intestinal failure due to short bowel syndrome: An international multicenter survey
- 2021
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In: Clinical Nutrition ESPEN. - : Elsevier BV. - 2405-4577. ; 45, s. 433-441
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Journal article (peer-reviewed)abstract
- Background and aims: The case-mix of patients with intestinal failure due to short bowel syndrome (SBS-IF) can differ among centres and may also be affected by the timeframe of data collection. Therefore, the ESPEN international multicenter cross-sectional survey was analyzed to compare the characteristics of SBS-IF cohorts collected within the same timeframe in different countries. Methods: The study included 1880 adult SBS-IF patients collected in 2015 by 65 centres from 22 countries. The demographic, nutritional, SBS type (end jejunostomy, SBS-J; jejuno-colic anastomosis, SBS-JC; jejunoileal anastomosis with an intact colon and ileocecal valve, SBS-JIC), underlying disease and intravenous supplementation (IVS) characteristics were analyzed. IVS was classified as fluid and electrolyte alone (FE) or parenteral nutrition admixture (PN). The mean daily IVS volume, calculated on a weekly basis, was categorized as <1, 1–2, 2–3 and >3 L/day. Results: In the entire group: 60.7% were females and SBS-J comprised 60% of cases, while mesenteric ischaemia (MI) and Crohn’ disease (CD) were the main underlying diseases. IVS dependency was longer than 3 years in around 50% of cases; IVS was infused ≥5 days/week in 75% and FE in 10% of cases. Within the SBS-IF cohort: CD was twice and thrice more frequent in SBS-J than SBS-JC and SBS-JIC, respectively, while MI was more frequent in SBS-JC and SBS-JIC. Within countries: SBS-J represented 75% or more of patients in UK and Denmark and 50-60% in the other countries, except Poland where SBS-JC prevailed. CD was the main underlying disease in UK, USA, Denmark and The Netherlands, while MI prevailed in France, Italy and Poland. Conclusions: SBS-IF type is primarily determined by the underlying disease, with significant variation between countries. These novel data will be useful for planning and managing both clinical activity and research studies on SBS.
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