Thirty to sixty per cent of older patients experience functional decline after hospitalisation, associated with an increase in dependence, readmission, nursing home placement and mortality. First step in prevention is the identification of patients at risk. The objective of this study is to develop and validate a prediction model to assess the risk of functional decline in older hospitalised patients.
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BACKGROUND: A significant number of older patients planned for transcatheter aortic valve implantation (TAVI) experience a decline in physical functioning and death, despite a successful procedure.OBJECTIVE: To systematically review the literature on the association of preprocedural muscle strength and physical performance with functional decline or long-term mortality after TAVI.METHODS: We followed the PRISMA guidelines and pre-registered this review at PROSPERO (CRD42020208032). A systematic search was conducted in MEDLINE and EMBASE from inception to 10 December 2021. Studies reporting on the association of preprocedural muscle strength or physical performance with functional decline or long-term (>6 months) mortality after the TAVI procedure were included. For outcomes reported by three or more studies, a meta-analysis was performed.RESULTS: In total, two studies reporting on functional decline and 29 studies reporting on mortality were included. The association with functional decline was inconclusive. For mortality, meta-analysis showed that low handgrip strength (hazard ratio (HR) 1.80 [95% confidence interval (CI): 1.22-2.63]), lower distance on the 6-minute walk test (HR 1.15 [95% CI: 1.09-1.21] per 50 m decrease), low performance on the timed up and go test (>20 s) (HR 2.77 [95% CI: 1.79-4.30]) and slow gait speed (<0.83 m/s) (HR 2.24 [95% CI: 1.32-3.81]) were associated with higher long-term mortality.CONCLUSIONS: Low muscle strength and physical performance are associated with higher mortality after TAVI, while the association with functional decline stays inconclusive. Future research should focus on interventions to increase muscle strength and physical performance in older cardiac patients.
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Given the substantial increase in children attending center-based childcare over the past decades, the consequences of center-based childcare for children’s development have gained more attention in developmental research. However, the relation between center-based childcare and children’s neurocognitive development remains relatively underexplored. The aim of this study was therefore to examine the relations between quantity of center-based childcare during infancy and the neurocognitive development (both functional brain networks and self-regulation) of 584 Dutch children. Small-world brain networks and children’s self-regulation were assessed during infancy (around 10 months of age) and the preschool period (2–6 years of age). The findings revealed that the quantity of center-based childcare during infancy was unrelated to individual differences in children’s functional brain networks. However, spending more hours per week in center-based childcare was positively related to the development of self-regulation in preschool age children, regardless of children’s sex or the levels of exposure to risk and maternal support in the home environment. More insight into the positive effects of center-based childcare on children’s development from infancy to toddlerhood can help to increase our insight into a better work–life balance and labor force participation of parents with young children. Moreover, this study highlights that Dutch center-based childcare offers opportunities to invest in positive child outcomes in children, including self-regulation.
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Het lopen van een marathon wordt steeds populairder. Naast de vele positieve gezondheidseffecten van duurinspanning, kan duurinspanning ook gepaard gaan met maagdarmklachten. Zo’n 30-90% van de hardlopers heeft last van maagdarmklachten tijdens of in de uren na het hardlopen. Het ontstaan van maagdarmklachten heeft waarschijnlijk te maken met de herverdeling van het bloedvolume, resulterend in minder bloedtoevoer naar het spijsverteringskanaal en een minder goed functionerende darmbarrière. Doordat de darmbarrière minder goed functioneert kunnen er ongewenste stoffen (endotoxinen) de bloedbaan intreden en voor ontstekingsreacties zorgen. De vele micro-organismen in onze darm, gezamenlijk onze darmmicrobiota genoemd, zijn van invloed op de voedselvertering, maar ook op het functioneren van de cellen die de darmwand bekleden en de verbindingen tussen deze cellen. Mogelijk hebben hardlopers met maagdarmklachten tijdens duurinspanning te maken met een afwijkende samenstelling van de darmmicrobiota en/of metabolieten ten opzichte van hardlopers zonder klachten, waardoor de darmbarrière minder goed functioneert en er problemen kunnen optreden. Vandaar dat het voornaamste doel van ons onderzoeksproject is om te onderzoeken of er een relatie bestaat tussen de samenstelling van de darmmicrobiota en/of metabolieten en het ontstaan van maagdarmklachten tijdens duurinspanning. De onderzoeksvragen die zullen worden bestudeerd zijn: 1) Verschilt de samenstelling van de darmmicrobiota en/of metabolieten van hardlopers die wel en niet last krijgen van maagdarmklachten tijdens het lopen van een marathon? En zo ja, hoe? 2) Kan de samenstelling van de darmmicrobiota en/of metabolieten van getrainde sporters die maagdarmklachten ervaren tijdens duurinspanning positief beïnvloed worden door probiotica-suppletie, zodat de kans op en/of intensiteit van maagdarmklachten tijdens duurinspanning wordt verminderd en de sportprestatie verbeterd? Het onderzoeksproject richt zich op de identificatie van sporters die last hebben van maagdarmklachten tijdens duurinspanning. We hopen met de beoogde resultaten bij te kunnen dragen aan op de persoon gerichte preventie van maagdarmklachten door het aanpassen van de darmmicrobiota.
Currently, many novel innovative materials and manufacturing methods are developed in order to help businesses for improving their performance, developing new products, and also implement more sustainability into their current processes. For this purpose, additive manufacturing (AM) technology has been very successful in the fabrication of complex shape products, that cannot be manufactured by conventional approaches, and also using novel high-performance materials with more sustainable aspects. The application of bioplastics and biopolymers is growing fast in the 3D printing industry. Since they are good alternatives to petrochemical products that have negative impacts on environments, therefore, many research studies have been exploring and developing new biopolymers and 3D printing techniques for the fabrication of fully biobased products. In particular, 3D printing of smart biopolymers has attracted much attention due to the specific functionalities of the fabricated products. They have a unique ability to recover their original shape from a significant plastic deformation when a particular stimulus, like temperature, is applied. Therefore, the application of smart biopolymers in the 3D printing process gives an additional dimension (time) to this technology, called four-dimensional (4D) printing, and it highlights the promise for further development of 4D printing in the design and fabrication of smart structures and products. This performance in combination with specific complex designs, such as sandwich structures, allows the production of for example impact-resistant, stress-absorber panels, lightweight products for sporting goods, automotive, or many other applications. In this study, an experimental approach will be applied to fabricate a suitable biopolymer with a shape memory behavior and also investigate the impact of design and operational parameters on the functionality of 4D printed sandwich structures, especially, stress absorption rate and shape recovery behavior.
Nowadays, there is particular attention towards the additive manufacturing of medical devices and instruments. This is because of the unique capability of 3D printing technologies for designing and fabricating complex products like bone implants that can be highly customized for individual patients. NiTi shape memory alloys have gained significant attention in various medical applications due to their exceptional superelastic and shape memory properties, allowing them to recover their original shape after deformation. The integration of additive manufacturing technology has revolutionized the design possibilities for NiTi alloys, enabling the fabrication of intricately designed medical devices with precise geometries and tailored functionalities. The AM-SMART project is focused on exploring the suitability of NiTi architected structures for bone implants fabricated using laser powder bed fusion (LPBF) technology. This is because of the lower stiffness of NiTi alloys compared to Ti alloys, closely aligning with the stiffness of bone. Additionally, their unique functional performance enables them to dissipate energy and recover the original shape, presenting another advantage that makes them well-suited for bone implants. In this investigation, various NiTi-based architected structures will be developed, featuring diverse cellular designs, and their long-term thermo-mechanical performance will be thoroughly evaluated. The findings of this study underscore the significant potential of these structures for application as bone implants, showcasing their adaptability for use also beyond the medical sector.
