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| 11. |
- Samuelsson, K, et al.
(författare)
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[Not Available]
- 2015
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Ingår i: Lakartidningen. - 1652-7518. ; 112
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Tidskriftsartikel (refereegranskat)
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- Alentorn-Geli, Eduard, et al.
(författare)
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Factors predictive of poorer outcomes in the surgical repair of multiligament knee injuries.
- 2019
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Ingår i: Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA. - : Springer Science and Business Media LLC. - 1433-7347. ; 27:2, s. 445-459
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Tidskriftsartikel (refereegranskat)abstract
- To investigate the influence of injury and treatment factors on clinical/functional outcomes in multiligament knee injuries (MLKI).Thirty-nine consecutive patients with confirmed and surgically treated MLKI who met inclusion criteria were scheduled for a follow-up visit to obtain: SF-12 and subjective feeling of normalcy between the operated and healthy knee, and IKDC, active range of motion (ROM), and stability exam (Lachman test, posterior drawer, and dial test at 30°). A chart review was used to obtain data on injury and treatment factors.The postoperative mean (SD) outcomes were: IKDC score 62.7 (25.9), flexion-extension ROM 125° (29°), and percentage of normalcy 74% (20%). The postoperative normal/nearly normal stability exam was: Lachman test 36 (95%) patients, posterior drawer at 90° 38 (97%) patients, and dial test of 39 (100%) patients. There were 24 (61.5%) and 23 (59%) patients with complications and reoperations, respectively. The presence of bicruciate injuries was associated with worse Lachman (p=0.03) and posterior drawer tests (p=0.03). Presence of injury to meniscal structures was associated with worse Lachman test (p=0.03), lower percentage of normalcy (p=0.02) and extension lag (p=0.04). Injury to cartilage structures was associated with worse IKDC scores (p=0.04). IKDC was lower in cases of posterolateral corner reconstruction (p=0.03) and use of allograft tendons for reconstruction (p=0.02); ROM was lower in allograft reconstruction (p=0.02) and need for meniscal repair (p = 0.01). Bicruciate reconstruction led to worst posterior drawer test (p=0.006).The outcomes of MLKI might be negatively influenced by bicruciate ligament, meniscal, and cartilage injuries; with regards to treatment characteristics, need for posterolateral corner or bicruciate ligament reconstruction, use of allografts, or need for meniscal repair may similarly diminish outcomes. While surgical treatment provides good overall function, ROM and stability, it rarely results in a "normal" knee and the chances of complications and reoperations are high.Cross-sectional comparative study, Level III.
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| 16. |
- Astell, A. J., et al.
(författare)
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INLIFE - Independent Living Support Functions for the Elderly: Technology and Pilot Overview
- 2018
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Ingår i: INTELLIGENT ENVIRONMENTS 2018. - 9781614998747 - 9781614998730 ; , s. 526-535
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- In this paper, we present the European H2020 project INLIFE (INdependent LIving support Functions for the Elderly). The project brought together 20 partners from nine countries with the goal of integrating into a common ICT platform a range of technologies intended to assist community-dwelling older people with cognitive impairment. The majority of technologies existed prior to INLIFE and a key goal was to bring them together in one place along with a number of new applications to provide a comprehensive set of services. The range of INLIFE services fell into four broad areas: Independent Living Support, Travel Support, Socialization and Communication Support and Caregiver Support. These included security applications, services to facilitate interactions with formal and informal caregivers, multilingual conversation support, web-based physical exercises, teleconsultations, and support for transport navigation. In total, over 2900 people participated in the project; they included elderly adults with cognitive impairment, informal caregivers, healthcare professionals, and other stakeholders. The aim of the study was to assess whether there was improvement/stabilization of cognitive/emotional/physical functioning, as well as overall well-being and quality of life of those using the INLIFE services, and to assess user acceptance of the platform and individual services. The results confirm there is a huge interest and appetite for technological services to support older adults living with cognitive impairment in the community. Different services attracted different amounts of use and evaluation with some proving extremely popular while others less so. The findings provide useful information on the ways in which older adults and their families, health and social care services and other stakeholders wish to access technological services, what sort of services they are seeking, what sort of support they need to access services, and how these services might be funded.
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| 17. |
- Barosi, G, et al.
(författare)
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Clinical end points for drug treatment trials in BCR-ABL1-negative classic myeloproliferative neoplasms : consensus statements from European LeukemiaNET (ELN) and Internation Working Group-Myeloproliferative Neoplasms Research and Treatment (IWG-MRT)
- 2015
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Ingår i: Leukemia. - : Springer Science and Business Media LLC. - 0887-6924 .- 1476-5551. ; 29:1, s. 20-26
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Tidskriftsartikel (refereegranskat)abstract
- The discovery of somatic mutations, primarily JAK2V617F and CALR, in classic BCR-ABL1-negative myeloproliferative neoplasms (MPNs) has generated interest in the development of molecularly targeted therapies, whose accurate assessment requires a standardized framework. A working group, comprised of members from European LeukemiaNet (ELN) and International Working Group for MPN Research and Treatment (IWG-MRT), prepared consensus-based recommendations regarding trial design, patient selection and definition of relevant end points. Accordingly, a response able to capture the long-term effect of the drug should be selected as the end point of phase II trials aimed at developing new drugs for MPNs. A time-to-event, such as overall survival, or progression-free survival or both, as co-primary end points, should measure efficacy in phase III studies. New drugs should be tested for preventing disease progression in myelofibrosis patients with early disease in randomized studies, and a time to event, such as progression-free or event-free survival should be the primary end point. Phase III trials aimed at preventing vascular events in polycythemia vera and essential thrombocythemia should be based on a selection of the target population based on new prognostic factors, including JAK2 mutation. In conclusion, we recommended a format for clinical trials in MPNs that facilitates communication between academic investigators, regulatory agencies and drug companies.
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| 18. |
- Bengtsson, J., et al.
(författare)
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Quantum Szilard Engine with Attractively Interacting Bosons
- 2018
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Ingår i: Physical Review Letters. - 0031-9007. ; 120:10
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Tidskriftsartikel (refereegranskat)abstract
- We show that a quantum Szilard engine containing many bosons with attractive interactions enhances the conversion between information and work. Using an ab initio approach to the full quantum-mechanical many-body problem, we find that the average work output increases significantly for a larger number of bosons. The highest overshoot occurs at a finite temperature, demonstrating how thermal and quantum effects conspire to enhance the conversion between information and work. The predicted effects occur over a broad range of interaction strengths and temperatures.
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| 19. |
- Birgegård, Gunnar, 1944-, et al.
(författare)
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Inflammatory functional iron deficiency common in myelofibrosis, contributes to anaemia and impairs quality of life. From the Nordic MPN study Group
- 2019
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Ingår i: European Journal of Haematology. - : Munksgaard Forlag. - 0902-4441 .- 1600-0609. ; 102:3, s. 235-240
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVES: The study investigates the hypothesis that inflammation in myelofibrosis (MF) like in myeloma and lymphoma, may disturb iron distribution and contribute to anaemia.METHODS: A cross-sectional study of 80 MF and 23 ET patients was performed.RESULTS: About 35% of anaemic MF patients had functional iron deficiency (FID) with transferrin saturation <20 and normal or elevated S-ferritin (<500 µg/L). In ET, FID was rare. In MF patients with FID, 70.6% were anaemic, vs 29.4% in patients without FID (P = 0.03). Hepcidin was significantly higher in MF patients with anaemia, including transfusion-dependent patients, 50.6 vs 24.4 µg/L (P = 0.01). There was a significant negative correlation between Hb and inflammatory markers in all MF patients: IL-2, IL-6 and TNF-α, (P < 0.01-0.03), LD (P = 0.004) and hepcidin (P = 0.03). These correlations were also seen in the subgroup of anaemic MF patients (Table ). Tsat correlated negatively with CRP (P < 0.001). Symptom burden was heavier in MF patients with FID, and MPN-SAF quality of life scores correlated with IL-6 and CRP.CONCLUSIONS: The inflammatory state of MF disturbs iron turnover, FID is common and contributes to anaemia development and impairment of QoL. Anaemic MF patients should be screened for FID.
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| 20. |
- Birkebaek, N. H., et al.
(författare)
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Body mass index standard deviation score and obesity in children with type 1 diabetes in the Nordic countries. HbA(1c) and other predictors of increasing BMISDS
- 2018
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Ingår i: Pediatric Diabetes. - : WILEY. - 1399-543X .- 1399-5448. ; 19:7, s. 1198-1205
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Tidskriftsartikel (refereegranskat)abstract
- Background: Intensified insulin therapy may increase body weight and cause obesity. This study compared body mass index standard deviation score (BMISDS) and obesity rate in children with type 1 diabetes (T1D) in Denmark, Iceland, Norway and Sweden, and uncovered predictors for increasing BMISDS. Methods: Data registered in the Nordic national childhood diabetes databases during the period 2008-2012 on children below 15 years with T1D for more than 3 months were compiled, including information on gender, age, diabetes duration, hemoglobin A(1c) (HbA(1c)), insulin dose, severe hypoglycemia (SH), treatment modality, height and weight. The Swedish reference chart for BMI was used for calculating BMISDS. Results: Totally, 11025 children (48% females) (30994 registrations) were included. Medians by the last recorded examination were: age, 13.5 years; diabetes duration, 4.3 years; HbA(1c), 7.9% (63 mmol/mol); insulin dose, 0.8 IU/kg/d and BMISDS, 0.70. Obesity rate was 18.5%. Adjusted mean BMISDS (BMISDS adj) was inversely related to HbA(1c) and directly to diabetes duration. Higher BMISDS adj was found in those with an insulin dose above 0.6 IU/kg/d, and in girls above 10 years. Pump users had higher BMISDS adj than pen users, and patients with registered SH had higher BMISDS adj than patients without SH (both P amp;lt; .001). Conclusion: Obesity rate in children with T1D in the Nordic countries is high, however, with country differences. Low HbA(1c), long diabetes duration, higher insulin dose, pump treatment and experiencing a SH predicted higher BMISDS. Diabetes caregivers should balance the risk of obesity and the benefit of a very low HbA(1c).
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| 22. |
- Burn, Garth L., et al.
(författare)
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Superresolution imaging of the cytoplasmic phosphatase PTPN22 links integrin-mediated T cell adhesion with autoimmunity
- 2016
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Ingår i: Science Signaling. - : American Association for the Advancement of Science (AAAS). - 1945-0877 .- 1937-9145. ; 9:448
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Tidskriftsartikel (refereegranskat)abstract
- Integrins are heterodimeric transmembrane proteins that play a fundamental role in the migration of leukocytes to sites of infection or injury. We found that protein tyrosine phosphatase nonreceptor type 22 (PTPN22) inhibits signaling by the integrin lymphocyte function-associated antigen-1 (LFA-1) in effector T cells. PTPN22 colocalized with its substrates at the leading edge of cells migrating on surfaces coated with the LFA-1 ligand intercellular adhesion molecule-1 (ICAM-1). Knockout or knockdown of PTPN22 or expression of the autoimmune disease-associated PTPN22-R620W variant resulted in the enhanced phosphorylation of signaling molecules downstream of integrins. Superresolution imaging revealed that PTPN22-R620 (wild-type PTPN22) was present as large clusters in unstimulated T cells and that these disaggregated upon stimulation of LFA-1, enabling increased association of PTPN22 with its binding partners at the leading edge. The failure of PTPN22-R620W molecules to be retained at the leading edge led to increased LFA-1 clustering and integrin-mediated cell adhesion. Our data define a previously uncharacterized mechanism for fine-tuning integrin signaling in T cells, as well as a paradigm of auto-immunity in humans in which disease susceptibility is underpinned by inherited phosphatase mutations that perturb integrin function. 2016
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| 23. |
- Chahla, J., et al.
(författare)
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Posterolateral corner of the knee: an expert consensus statement on diagnosis, classification, treatment, and rehabilitation
- 2019
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Ingår i: Knee Surgery Sports Traumatology Arthroscopy. - : Springer Science and Business Media LLC. - 0942-2056 .- 1433-7347. ; 27:8, s. 2520-2529
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Tidskriftsartikel (refereegranskat)abstract
- PurposeTo develop a statement on the diagnosis, classification, treatment, and rehabilitation concepts of posterolateral corner (PLC) injuries of the knee using a modified Delphi technique.MethodsA working group of three individuals generated a list of statements relating to the diagnosis, classification, treatment, and rehabilitation of PLC injuries to form the basis of an initial survey for rating by an international group of experts. The PLC expert group (composed of 27 experts throughout the world) was surveyed on three occasions to establish consensus on the inclusion/exclusion of each item. In addition to rating agreement, experts were invited to propose further items for inclusion or to suggest modifications of existing items at each round. Pre-defined criteria were used to refine item lists after each survey. Statements reaching consensus in round three were included within the final consensus document.ResultsTwenty-seven experts (100% response rate) completed three rounds of surveys. After three rounds, 29 items achieved consensus with over 75% agreement and less than 5% disagreement. Consensus was reached in 92% of the statements relating to diagnosis of PLC injuries, 100% relating to classification, 70% relating to treatment and in 88% of items relating to rehabilitation statements, with an overall consensus of 81%.ConclusionsThis study has established a consensus statement relating to the diagnosis, classification, treatment, and rehabilitation of PLC injuries. Further research is needed to develop updated classification systems, and better understand the role of non-invasive and minimally invasive approaches along with standardized rehabilitation protocols.Level of evidenceConsensus of expert opinion, Level V.
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| 25. |
- Di Gennaro, A., et al.
(författare)
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Cysteinyl leukotriene receptor 1 antagonism prevents experimental abdominal aortic aneurysm
- 2018
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Ingår i: Proceedings of the National Academy of Sciences of the United States of America. - : Proceedings of the National Academy of Sciences. - 0027-8424 .- 1091-6490. ; 115:8, s. 1907-1912
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Tidskriftsartikel (refereegranskat)abstract
- Cysteinyl-leukotrienes (cys-LTs) are 5-lipoxygenase-derived lipid mediators involved in the pathogenesis and progression of inflammatory disorders, in particular asthma. We have previously found evidence linking these mediators to increased levels of proteolytic enzymes in tissue specimens of human abdominal aortic aneurysm (AAA). Here we show that antagonism of the CysLT1 receptor by montelukast, an established antiasthma drug, protects against a strong aorta dilatation (>50% increase = aneurysm) in a mouse model of CaCl2-induced AAA at a dose comparable to human medical practice. Analysis of tissue extracts revealed that montelukast reduces the levels of matrix metalloproteinase-9 (MMP-9) and macrophage inflammatory protein-1 alpha (MIP-1 alpha) in the aortic wall. Furthermore, aneurysm progression was specifically mediated through CysLT1 signaling since a selective CysLT2 antagonist was without effect. A significantly reduced vessel dilatation is also observed when treatment with montelukast is started days after aneurysm induction, suggesting that the drug not only prevents but also stops and possibly reverts an already ongoing degenerative process. Moreover, montelukast reduced the incidence of aortic rupture and attenuated the AAA development in two additional independent models, i.e., angiotensin II- and porcine pancreatic elastase-induced AAA, respectively. Our results indicate that cys-LTs are involved in the pathogenesis of AAA and that antagonism of the CysLT1 receptor is a promising strategy for preventive and therapeutic treatment of this clinically silent and highly lethal disease.
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| 26. |
- Geyer, Holly L., et al.
(författare)
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The role of sexuality symptoms in myeloproliferative neoplasm symptom burden and quality of life : An analysis by the MPN QOL International Study Group
- 2016
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Ingår i: Cancer. - : Wiley. - 0008-543X .- 1097-0142. ; 122:12, s. 1888-1896
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUNDPatients with myeloproliferative neoplasms (MPNs) including polycythemia vera, essential thrombocythemia, and myelofibrosis, are faced with oppressive symptom profiles that compromise daily functioning and quality of life. Among these symptoms, sexuality-related symptoms have emerged as particularly prominent and largely unaddressed. In the current study, the authors evaluated how sexuality symptoms from MPN relate to other patient characteristics, disease features, treatments, and symptoms. METHODSA total of 1971 patients with MPN (827 with essential thrombocythemia, 682 with polycythemia vera, 456 with myelofibrosis, and 6 classified as other) were prospectively evaluated and patient responses to the Myeloproliferative Neoplasm Symptom Assessment Form (MPN-SAF) and the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 (EORTC-QLQ C30) were collected, along with information regarding individual disease characteristics and laboratory data. Sexuality scores were compared with an age-matched, healthy control population. RESULTSOverall, patients with MPN were found to have greater sexual dysfunction compared with the healthy population (MPN-SAF score of 3.6 vs 2.0; P<.001), with 64% of patients with MPN describing some degree of sexual dysfunction and 43% experiencing severe symptoms. The presence of sexual symptoms correlated closely with all domains of patient functionality (physical, social, cognitive, emotional, and role functioning) and were associated with a reduced quality of life. Sexual problems also were found to be associated with other MPN symptoms, particularly depression and nocturnal and microvascular-related symptoms. Sexual dysfunction was more severe in patients aged >65 years and in those with cytopenias and transfusion requirements, and those receiving certain therapies such as immunomodulators or steroids. ConclusionsThe results of the current study identify the topic of sexuality as a prominent issue for the MPN population, and this area would appear to benefit from additional investigation and management. Cancer 2016;122:1888-96. (c) 2016 American Cancer Society. Sexuality problems impact all domains of functionality, depression, microvascular symptoms, and overall quality of life among patients with myeloproliferative neoplasms. These problems correlate with patient age, the presence of cytopenias, transfusion requirements, and common therapies for myeloproliferative neoplasms. See also pages 1804-6.
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| 27. |
- Hulten, A. H., et al.
(författare)
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First evaluation of a multicomponent flue gas cleaning concept using chlorine dioxide gas - Experiments on chemistry and process performance
- 2017
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Ingår i: Fuel. - : Elsevier BV. - 0016-2361. ; 210, s. 885-891
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Tidskriftsartikel (refereegranskat)abstract
- This work has investigated a multi-pollutant flue gas cleaning concept based on oxidation using chlorine dioxide (ClO2) gas with subsequent absorption. The chlorine dioxide gas converts the relatively insoluble nitric oxide (NO) to the more soluble nitrogen dioxide (NO2). This makes a downstream wet scrubbing process feasible for simultaneous removal of sulphur oxides (SOx) and nitrogen dioxide (NO2). An experimental evaluation of the proposed process using chlorine dioxide gas has been performed on a laboratory scale. The experimental setup, designed and built by Akzo Nobel, consists of a reactor for oxidation, a flue gas condenser and a wet scrubber. The results show that ClO2 gas oxidises NO with high efficiencies under a wide range of process conditions, also in the presence of sulphur dioxide (SO2). The more ClO2 gas is added, the higher the degree of NO oxidation and the total nitrogen oxides (NOx) removal efficiency becomes. The results also show that the presence of water strongly increases the removal of SO2, which is believed to be an effect of liquid phase nitrogen-sulphur interactions. The absorption solution, sodium carbonate and sodium sulphite, is efficient in removing NOx (especially NO2) from the oxidised flue gas. The total NOx reduction at 0.6 ClO2:NO mole ratio and subsequent wet scrubbing is between 79% and 94%, depending on the process conditions used. The total SO2 reduction in the scrubber is between 97% and 100% independent of ClO2 gas addition. Furthermore, the total NOx balance shows that the major part of the NOx is converted to nitrate in the condensate liquor and as nitrite in the absorption solution. A higher ClO2 gas addition and a higher reactor temperature convert more of the NOx to nitrite in the absorption solution.
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| 28. |
- Kay, J., et al.
(författare)
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Earlier anterior cruciate ligament reconstruction is associated with a decreased risk of medial meniscal and articular cartilage damage in children and adolescents: a systematic review and meta-analysis
- 2018
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Ingår i: Knee Surgery Sports Traumatology Arthroscopy. - : Springer Science and Business Media LLC. - 0942-2056 .- 1433-7347. ; 26:12, s. 3738-3753
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Tidskriftsartikel (refereegranskat)abstract
- Purpose To evaluate the association between surgical timing and the incidence of secondary meniscal or chondral damage in children and adolescents with anterior cruciate ligament (ACL) ruptures. Methods Three electronic databases, PubMed, MEDLINE, and EMBASE, were systematically searched from database inception until October 16, 2017 by two reviewers independently and in duplicate. The inclusion criteria were English language studies that reported the incidence of meniscal and articular cartilage damage in children or adolescent athletes with ACL injuries as well as the timing of their ACL reconstruction (ACLR). Risk ratios were combined in a meta-analysis using a random effects model. Results A total of nine studies including 1353 children and adolescents met the inclusion criteria. The mean age of patients included was 14.2 years (range 6-19), and 45% were female. There was a significantly decreased risk of concomitant medial meniscal injury in those reconstructed early (26%) compared to those with delayed reconstruction (47%) [pooled risk ratio (RR) = 0.49, 95% CI 0.36-0.65, p < 0.00001]. There was also a significantly reduced risk of medial femoral chondral (RR = 0.48, 95% CI 0.31-0.75, p = 0.001), lateral femoral chondral (RR = 0.38, 95% CI 0.20-0.75, p = 0.005), tibial chondral (RR = 0.45, 95% CI 0.27-0.75, p = 0.002), and patellofemoral chondral (RR = 0.41, 95% CI 0.20-0.82, p = 0.01) damage in the early reconstruction group in comparison to the delayed group. Conclusion Pooled results from observational studies suggest that early ACLR results in a significantly decreased risk of secondary medial meniscal injury, as well as secondary medial, lateral, and patellofemoral compartment chondral damage in children and adolescents. This study provides clinicians with valuable information regarding the benefits of early ACL reconstruction in children and adolescents, and can be used in the decision making for athletes in this population.
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| 29. |
- Krabbe, D., et al.
(författare)
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Executive function and attention in patients with stress-related exhaustion: perceived fatigue and effect of distraction
- 2017
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Ingår i: Stress-the International Journal on the Biology of Stress. - : Informa UK Limited. - 1025-3890. ; 20:4, s. 333-340
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Tidskriftsartikel (refereegranskat)abstract
- Cognitive impairment has frequently been shown in patients who seek medical care for stress-related mental health problems. This study aims to extend the current knowledge of cognitive impairments in these patients by focusing on perceived fatigue and effects of distraction during cognitive testing. Executive function and attention were tested in a group of patients with stress-related exhaustion (n=25) and compared with healthy controls (n=25). Perceived fatigue was measured before, during and after the test session, and some of the tests were administered with and without standardized auditory distraction. Executive function and complex attention performance were poorer among the patients compared to controls. Interestingly, their performance was not significantly affected by auditory distraction but, in contrast to the controls, they reported a clear-cut increase in mental tiredness, during and after the test session. Thus, patients with stress-related exhaustion manage to perform during distraction but this was achieved at a great cost. These findings are discussed in terms of a possible tendency to adopt a high-effort approach despite cognitive impairments and the likelihood that such an approach will require increased levels of effort, which can result in increased fatigue. We tentatively conclude that increased fatigue during cognitive tasks is a challenge for patients with stress-related exhaustion and plausibly of major importance when returning to work demanding high cognitive performance.
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| 34. |
- Persson, M., et al.
(författare)
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The Better Diabetes Diagnosis (BDD) study – A review of a nationwide prospective cohort study in Sweden
- 2018
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Ingår i: Diabetes Research and Clinical Practice. - : Elsevier BV. - 0168-8227 .- 1872-8227. ; 140, s. 236-244
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Forskningsöversikt (refereegranskat)abstract
- The incidence of type 1 diabetes (T1D) in Sweden is one of the highest in the world. However, the possibility of other types of diabetes must also be considered. In addition, individuals with T1D constitute a heterogeneous group. A precise classification of diabetes is a prerequisite for optimal outcome. For precise classification, knowledge on the distribution of genetic factors, biochemical markers and clinical features in individuals with new onset of diabetes is needed. The Better Diabetes Diagnosis (BDD), is a nationwide study in Sweden with the primary aim to facilitate a more precise classification and diagnosis of diabetes in order to enable the most adequate treatment for each patient. Secondary aims include identification of risk factors for diabetes-related co-morbidities. Since 2005, data on almost all children and adolescents with newly diagnosed diabetes in Sweden are prospectively collected and including heredity of diabetes, clinical symptoms, levels of C peptide, genetic analyses and detection of autoantibodies. Since 2011, analyses of HLA profile, autoantibodies and C peptide levels are part of clinical routine in Sweden for all pediatric patients with suspected diagnosis of diabetes. In this review, we present the methods and main results of the BDD study so far and discuss future aspects.
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| 35. |
- Pramling, Niklas, 1973, et al.
(författare)
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Learning, Teaching, and Didaktik
- 2019
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Ingår i: Play-Responsive Teaching in Early Childhood Education. - Cham : Springer. - 2468-8746. - 9783030159580 ; , s. 17-29
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Bokkapitel (refereegranskat)abstract
- In this chapter, our perspective on teaching, learning and didaktik are presented. What we refer to as didaktik highlights issues concerning content and context, and we therefore discuss these notions more closely. © 2019, The Author(s).
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| 36. |
- Pramling, Niklas, 1973, et al.
(författare)
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The Letter Thief: From Playing to Teaching to Learning to Playing
- 2019
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Ingår i: Play-Responsive Teaching in Early Childhood Education. - Cham : Springer International Publishing. - 2468-8746.
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- In this chapter, we show how a learning content can be introduced in a child-initiated play frame, without interrupting the play. The chapter therefore gives an example of how what is sometimes referred to as academic content can be promoted through such activity. The analysis clarifies how reading and graphical symbols become structuring resources in children’s play. A real-world problem (as is) is introduced and managed within the fictional realm of play (as if). © 2019, The Author(s).
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| 37. |
- Pramling, Niklas, 1973, et al.
(författare)
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The Lion and the Mouse: How and Why Teachers Succeed in Becoming Participants in Children’s Ongoing Play
- 2019
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Ingår i: Play-Responsive Teaching in Early Childhood Education. - Cham : Springer. - 2468-8746. - 9783030159580 ; , s. 87-96
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Bokkapitel (refereegranskat)abstract
- In this chapter, we investigate preschool teachers’ attempts to participate when children are already engaged in playing (alone or with playmates), and we focus on when and why teachers seem to succeed (or not) in their attempts to enter such play. © 2019, The Author(s).
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| 38. |
- Pramling, Niklas, 1973, et al.
(författare)
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The Magical Fruits: Establishing a Narrative Play Frame for Mutual Problem Solving
- 2019
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Ingår i: Play-Responsive Teaching in Early Childhood Education. - Cham : Springer. - 2468-8746. - 9783030159580 ; , s. 137-151
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Bokkapitel (refereegranskat)abstract
- In this chapter, we analyze a prolonged activity from initiation to conclusion, focusing on (i) how the teacher establishes a narrative, imaginary, frame for the activity, (ii) how children participate and contribute to this activity, (iii) what didaktikal challenges are actualized and what support the children are given in the activity, including what contents are constituted, and (iv) what the implications of the activity are for children’s development. © 2019, The Author(s).
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| 39. |
- Prentice, H. A., et al.
(författare)
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Patient demographic and surgical characteristics in anterior cruciate ligament reconstruction: a description of registries from six countries
- 2018
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Ingår i: British Journal of Sports Medicine. - : BMJ. - 0306-3674 .- 1473-0480. ; 52:11
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Tidskriftsartikel (refereegranskat)abstract
- Objective Findings from individual anterior cruciate ligament reconstruction (ACLR) registry studies are impactful, but how various registries from different countries compare with different patient populations and surgical techniques has not been described. We sought to describe six ACLR registry cohorts to understand variation across countries. Methods Five European registries and one US registry participated. For each registry, all primary ACLR registered between registry establishment through 31December 2014 were identified. Descriptive statistics included frequencies, proportions, medians and IQRs. Revision incidence rates following primary ACLR were computed. Results 101 125 ACLR were included: 21820 in Denmark, 300 in Luxembourg, 17556 in Norway, 30422 in Sweden, 2972 in the UK and 28055 in the US. In all six cohorts, males (range: 56.8%-72.4%) and soccer injuries (range: 14.1%-42.3%) were most common. European countries mostly used autografts (range: 93.7%-99.7%); allograft was most common in the US (39.9%). Interference screw was the most frequent femoral fixation in Luxembourg and the US (84.8% and 42.9%), and suspensory fixation was more frequent in the other countries (range: 43.9%-75.5%). Interference was the most frequent tibial fixation type in all six cohorts (range: 64.8%-98.2%). Three-year cumulative revision probabilities ranged from 2.8% to 3.7%. Conclusions Similarities in patient demographics and injury activity were observed between all cohorts of ACLR. However, graft and fixation choices differed. Revision rates were low. This work, including >100 000 ACLR, is the most comprehensive international description of contemporary practice to date.
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| 40. |
- Scotch, Allison H, et al.
(författare)
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Symptom burden profile in myelofibrosis patients with thrombocytopenia : Lessons and unmet needs
- 2017
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Ingår i: Leukemia Research. - : Elsevier BV. - 0145-2126 .- 1873-5835. ; 63, s. 34-40
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Tidskriftsartikel (refereegranskat)abstract
- Myelofibrosis is a myeloproliferative neoplasm associated with progressive cytopenias and high symptom burden. MF patients with thrombocytopenia have poor prognosis but the presence of thrombocytopenia frequently precludes the use of JAK2 inhibitors. In this study, we assessed quality of life and symptom burden in 418 MF patients with (n = 89) and without (n = 329) thrombocytopenia using prospective data from the MPN-QOL study group database, including the Myeloproliferative Neoplasm Symptom Assessment Form (MPN-SAF) and Total Symptom Score (MPN10). Thrombocytopenia, defined as platelet count < 100 x10(9)/L (moderate 51-100 x 10(9)/L; severe <= 50 x10(9)/L), was associated with anemia (76% vs. 45%, p < 0.001), leukopenia (29% vs. 11%, p < 0.001), and need for red blood cell transfusion (35% vs. 19%, p = 0.002). Thrombocytopenic patients had more fatigue, early satiety, inactivity, dizziness, sad mood, cough, night sweats, itching, fever, and weight loss; total symptom scores were also higher (33 vs. 24, p < 0.001). Patients with severe thrombocytopenia were more likely to have anemia (86% vs. 67%, p = 0.04), leukopenia (40% vs. 20%, p = 0.04), and transfusion requirements (51% vs. 20%, p = 0.002) but few differences in symptoms when compared to patients with moderate thrombocytopenia. These results suggest that MF patients with thrombocytopenia experience greater symptomatic burden than MF patients without thrombocytopenia and may benefit from additional therapies.
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| 41. |
- Svantesson, Eleonor, et al.
(författare)
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Double-bundle anterior cruciate ligament reconstruction is superior to single-bundle reconstruction in terms of revision frequency: a study of 22,460 patients from the Swedish National Knee Ligament Register
- 2017
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Ingår i: Knee Surgery, Sports Traumatology, Arthroscopy. - : Springer Science and Business Media LLC. - 0942-2056 .- 1433-7347. ; 25:12, s. 3884-3891
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Tidskriftsartikel (refereegranskat)abstract
- © 2016, The Author(s). Purpose: Studies comparing single- and double-bundle anterior cruciate ligament (ACL) reconstructions often include a combined analysis of anatomic and non-anatomic techniques. The purpose of this study was to compare the revision rates between single- and double-bundle ACL reconstructions in the Swedish National Knee Ligament Register with regard to surgical variables as determined by the anatomic ACL reconstruction scoring checklist (AARSC). Methods: Patients from the Swedish National Knee Ligament Register who underwent either single- or double-bundle ACL reconstruction with hamstring tendon autograft during the period 2007–2014 were included. The follow-up period started with primary ACL reconstruction, and the outcome measure was set as revi sion surgery. An online questionnaire based on the items of the AARSC was used to determine the surgical technique implemented in the single-bundle procedures. These were organized into subgroups based on surgical variables, and the revision rates were compared with the double-bundle ACL reconstruction. Hazard ratios (HR) with 95% confidence interval (CI) was calculated and adjusted for confounders by Cox regression. Results: A total of 22,460 patients were included in the study, of which 21,846 were single-bundle and 614 were double-bundle ACL reconstruction. Double-bundle ACL reconstruction had a revision frequency of 2.0% (n=12) and single-bundle 3.2% (n=689). Single-bundle reconstruction had an increased risk of revision surgery compared with double-bundle [adjusted HR 1.98 (95% CI 1.12–3.51), p=0.019]. The subgroup analysis showed a significantly increased risk of revision surgery in patients undergoing single-bundle with anatomic technique using transportal drilling [adjusted HR 2.51 (95% CI 1.39–4.54), p=0.002] compared with double-bundle ACL reconstruction. Utilizing a more complete anatomic technique according to the AARSC lowered the hazard rate considerably when transportal drilling was performed but still resulted in significantly increased risk of revision surgery compared with double-bundle ACL reconstruction [adjusted HR 1.87 (95% CI 1.04–3.38), p=0.037]. Conclusions: Double-bundle ACL reconstruction is associated with a lower risk of revision surgery than single-bundle ACL reconstruction. Single-bundle procedures performed using transportal femoral drilling technique had significantly higher risk of revision surgery compared with double-bundle. However, a reference reconstruction with transportal drilling defined as a more complete anatomic reconstruction reduces the risk of revision surgery considerably. Level of evidence: III.
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| 42. |
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| 45. |
- Torén, H., et al.
(författare)
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Model study of the electron-phonon coupling in graphene; relative importance of intraband and interband scattering
- 2016
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Ingår i: Chemical Physics Letters. - : Elsevier BV. - 0009-2614. ; 660, s. 233-237
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this model study of the electron-phonon coupling in graphene was to find out about the relative importance of the inter- and intraband scattering and which phonon modes are the most active. This was achieved by analyzing the electron-phonon matrix element of the carbon dimer in the unit cell. We found that for the intra molecular orbital matrix elements the longitudinal optical phonon mode is the active phonon mode. The matrix element corresponding to σ→σ is greater than the matrix element for π→π. The inter molecular orbital scattering π→σ is driven by the out-of-plane acoustic phonon mode, while the out-of-plane optical mode does not contribute for symmetry reasons. We found the unexpected result that the magnitude of matrix element of the inter molecular orbital scattering π→σ exceeds the intra molecular orbital scattering π→π. These results indicate that the in general not considered inter-band scattering has to be taken into account when analyzing e.g. photo-hole lifetimes and the electron-phonon coupling constant λ from photoemission data of graphene. © 2016 Elsevier B.V.
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| 46. |
- Wang, Shiyu, et al.
(författare)
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Development and evaluation of a new regional coupled atmosphere-ocean model in the North Sea and Baltic Sea
- 2015
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Ingår i: Tellus. Series A, Dynamic meteorology and oceanography. - : Stockholm University Press. - 0280-6495 .- 1600-0870. ; 67
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Tidskriftsartikel (refereegranskat)abstract
- A new regional coupled model system for the North Sea and the Baltic Sea is developed, which is composed of the regional setup of ocean model NEMO, the Rossby Centre regional climate model RCA4, the sea ice model LIM3 and the river routing model CaMa-Flood. The performance of this coupled model system is assessed using a simulation forced with ERA-Interim reanalysis data at the lateral boundaries during the period 1979-2010. Compared to observations, this coupled model system can realistically simulate the present climate. Since the active coupling area covers the North Sea and Baltic Sea only, the impact of the ocean on the atmosphere over Europe is small. However, we found some local, statistically significant impacts on surface parameters like 2m air temperature and sea surface temperature (SST). A precipitation-SST correlation analysis indicates that both coupled and uncoupled models can reproduce the air-sea relationship reasonably well. However, the coupled simulation gives slightly better correlations even when all seasons are taken into account. The seasonal correlation analysis shows that the air-sea interaction has a strong seasonal dependence. Strongest discrepancies between the coupled and the uncoupled simulations occur during summer. Due to lack of air-sea interaction, in the Baltic Sea in the uncoupled atmosphere-standalone run the correlation between precipitation and SST is too small compared to observations, whereas the coupled run is more realistic. Further, the correlation analysis between heat flux components and SST tendency suggests that the coupled model has a stronger correlation. Our analyses show that this coupled model system is stable and suitable for different climate change studies.
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| 47. |
- Yabroudi, M. A., et al.
(författare)
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Predictors of Revision Surgery After Primary Anterior Cruciate Ligament Reconstruction
- 2016
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Ingår i: Orthopaedic Journal of Sports Medicine. - : SAGE Publications. - 2325-9671. ; 4
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Tidskriftsartikel (refereegranskat)abstract
- Background: Revision anterior cruciate ligament (ACL) reconstruction surgery occurs in 5% to 15% of individuals undergoing ACL reconstruction. Identifying predictors for revision ACL surgery is of essence in the pursuit of creating adequate prevention programs and to identify individuals at risk for reinjury and revision. Purpose: To determine predictors of revision ACL surgery after failed primary ACL reconstruction. Methods: A total of 251 participants (mean age SD, 26.1 9.9 years) who had undergone primary ACL reconstruction 1 to 5 years earlier completed a comprehensive survey to determine predictors of revision ACL surgery at a mean 3.4 +/- 1.3 years after the primary ACL reconstruction. Potential predictors that were assessed included subject characteristics (age at the time of surgery, time from injury to surgery, sex, body mass index, preinjury activity level, return to sport status), details of the initial injury (mechanism; concomitant injury to other ligaments, menisci, and cartilage), surgical details of the primary reconstruction (Lachman and pivot shift tests under anesthesia, graft type, femoral drilling technique, reconstruction technique), and postoperative course (length of rehabilitation, complications). Univariate and multivariate logistic regression analyses were performed to identify factors that predicted the need for revision ACL surgery. Results: Overall, 21 (8.4%) subjects underwent revision ACL surgery. Univariate analysis showed that younger age at the time of surgery (P = .003), participation in sports at a competitive level (P = .023), and double-bundle ACL reconstruction (P = .024) predicted increased risk of revision ACL surgery. Allograft reconstructions also demonstrated a trend toward greater risk of revision ACL surgery (P = .076). No other variables were significantly associated with revision ACL surgery. Multivariate analysis revealed that revision ACL surgery was only predicted by age at the time of surgery and graft type (autograft vs allograft). Conclusion: The overall revision ACL surgery rate after primary unilateral ACL reconstruction was 8.4%. Univariate predictors of revision ACL reconstruction included younger age at the time of surgery, competitive baseline activity level, and double-bundle ACL reconstruction. However, multivariable logistic regression analysis indicated that age and reconstruction performed with allograft were the only independent predictors of revision ACL reconstruction.
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