Purpose/Objective: Most dose-escalation trials in glioblastoma patients integrate the escalated dose throughout the standard course by targeting a specific subvolume. We hypothesize that anatomical changes during irradiation may affect the dose coverage of this subvolume for both proton- and photon-based radiotherapy. Material and Methods: For 24 glioblastoma patients a photon- and proton-based dose escalation treatment plan (of 75 Gy/30 fr) was simulated on the dedicated radiotherapy planning MRI obtained before treatment. The escalated dose was planned to cover the resection cavity and/or contrast enhancing lesion on the T1w post-gadolinium MRI sequence. To analyze the effect of anatomical changes during treatment, we evaluated on an additional MRI that was obtained during treatment the changes of the dose distribution on this specific high dose region. Results: The median time between the planning MRI and additional MRI was 26 days (range 16–37 days). The median time between the planning MRI and start of radiotherapy was relatively short (7 days, range 3–11 days). In 3 patients (12.5%) changes were observed which resulted in a substantial deterioration of both the photon and proton treatment plans. All these patients underwent a subtotal resection, and a decrease in dose coverage of more than 5% and 10% was observed for the photon- and proton-based treatment plans, respectively. Conclusion: Our study showed that only for a limited number of patients anatomical changes during photon or proton based radiotherapy resulted in a potentially clinically relevant underdosage in the subvolume. Therefore, volume changes during treatment are unlikely to be responsible for the negative outcome of dose-escalation studies.
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This cross-cultural study examines the relationship between perceived COVID-19 changes due to the impacts on everyday life by the pandemic with social exclusion and across 32 cultures and their levels in collectivism. With data from the start of the first outbreak from March 2020 to June 2020 (N = 9245), multilevel analysis indicated that as individuals perceive greater daily life changes induced by the pandemic, they experience heightened levels of social exclusion, with this association being particularly pronounced in less collectivistic cultures. These findings underscore the importance of considering cultural context in understanding responses to crises such as the COVID-19 pandemic, with implications for culturally sensitive interventions aimed at promoting social inclusion across diverse cultural contexts.
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Abstract: Plan adaptation during the course of (chemo)radiotherapy of H&N cancer requires repeat CT scanning to capture anatomy changes such as parotid gland shrinkage. Hydration, applied to prevent nephrotoxicity from cisplatin, could temporarily alter the hydrogen balance and hence the captured anatomy. The aim of this study was to determine geometric changes of parotid glands as function of hydration during chemoradiotherapy compared to a control group treated with radiotherapy only.
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ObjectivesBody weight and muscle mass loss following an acute hospitalization in older patients may be influenced by malnutrition and sarcopenia among other factors. This study aimed to assess the changes in body weight and composition from admission to discharge and the geriatric variables associated with the changes in geriatric rehabilitation inpatients.DesignRESORT is an observational, longitudinal cohort.Setting and ParticipantsGeriatric rehabilitation inpatients admitted to geriatric rehabilitation wards at the Royal Melbourne Hospital, Melbourne, Australia (N = 1006).MethodsChanges in body weight and body composition [fat mass (FM), appendicular lean mass (ALM)] from admission to discharge were analyzed using linear mixed models. Body mass index (BMI) categories, (risk of) malnutrition (Global Leadership Initiative on Malnutrition), sarcopenia (European Working Group on Sarcopenia in Older People), dependence in activities of daily living (ADL), multimorbidity, and cognitive impairment were tested as geriatric variables by which the changes in body weight and composition may differ.ResultsA total of 1006 patients [median age: 83.2 (77.7–88.8) years, 58.5% female] were included. Body weight, FM (kg), and FM% decreased (0.30 kg, 0.43 kg, and 0.46%, respectively) and ALM (kg) and ALM% increased (0.17 kg and 0.33%, respectively) during geriatric rehabilitation. Body weight increased in patients with underweight; decreased in patients with normal/overweight, obesity, ADL dependence and in those without malnutrition and sarcopenia. ALM% and FM% decreased in patients with normal/overweight. ALM increased in patients without multimorbidity and in those with malnutrition and sarcopenia; ALM% increased in patients without multimorbidity and with sarcopenia.Conclusions and ImplicationsIn geriatric rehabilitation, body weight increased in patients with underweight but decreased in patients with normal/overweight and obesity. ALM increased in patients with malnutrition and sarcopenia but not in patients without. This suggests the need for improved standard of care independent of patients’ nutritional risk.
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a b s t r a c t: Objective: To study the impact of target volume changes in brain metastases during fractionated stereotactic radiosurgery (fSRS) and identify patients that benefit from MRI guidance. Material and methods: For 15 patients (18 lesions) receiving fSRS only (fSRSonly) and 19 patients (20 lesions) receiving fSRS postoperatively (fSRSpostop), a treatment planning MRI (MR0) and repeated MRI during treatment (MR1) were acquired. The impact of target volume changes on the target coverage was analyzed by evaluating the planned dose distribution (based on MR0) on the planning target volume (PTV) during treatment as defined on MR1. The predictive value of target volume changes before treatment (using the diagnostic MRI (MRD)) was studied to identify patients that experienced the largest changes during treatment. Results: Target volume changes during fSRS did result in large declines of the PTV dose coverage up to 34.8% (median = 3.2%) for fSRSonly patients. For fSRSpostop the variation and declines were smaller (median PTV dose coverage change = 0.5% (4.5% to 1.9%)). Target volumes changes did also impact the minimum dose in the PTV (fSRSonly; 2.7 Gy (16.5 to 2.3 Gy), fSRSpostop; 0.4 Gy (4.2 to 2.5 Gy)). Changes in target volume before treatment (i.e. seen between the MRD and MR0) predicted which patients experienced the largest dose coverage declines during treatment. Conclusion: Target volume changes in brain metastases during fSRS can result in worsening of the target dose coverage. Patients benefiting the most from a repeated MRI during treatment could be identified before treatment.
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English Abstract:Administrative turbulence in social work: the challenge of pluralist coalition-formation As elsewhere in Europe, social work in the Netherlands is facing ever more administrative changes. This article analyzes the administrative changes that local social work institutions are currently facing and how representatives of these institutions are reacting to these changes. The article is divided into three sections. The first section describes four administrative changes that organizations in the field of social work are currently facing. The second section is based on the results of four studies in local social work, and analyzes how social workers and managers from these organizations are experiencing and handling these administrative changes. We group the reactions into four different clusters: the confused reaction, the introvert reaction, the extravert reaction and the binding reaction. The third section zooms in on what we see as the most beneficial strategy: the binding reaction. We argue that these turbulent times call for organizations that are able to create strong coalitions, both internally and externally. These are necessary to guarantee service provision as well as innovation in a meaningful way.--Dutch Abstract:Bestuurlijk turbulentie in het sociaal werk: de uitdaging van meervoudige coalitievorming Net als elders in Europa wordt het sociaal werk in Nederland geconfronteerd met indringende bestuurlijke veranderingen. In dit artikel analyseren wij met welke bestuurlijke veranderingen instellingen in het lokaal sociaal werk te maken hebben en hoe representanten van deze instellingen op deze veranderingen reageren. Het artikel bestaat uit drie delen. In het eerste deel beschrijven we vier in het oog springende bestuurlijke veranderingen waarmee organisaties in dit veld geconfronteerd worden. In het tweede deel analyseren we op basis van verschillende onderzoeken in het lokaal sociaal werk hoe representanten van deze organisaties – sociaal werkers en managers – deze veranderingen ervaren en hoe zij hiermee omgaan. We onderscheiden vier clusters reacties: de verwarde reactie, de introverte reactie, de extraverte reactie en de verbindende reactie. In het derde deel zoomen we in op de ons inziens meest vruchtbare reactiewijze: de verbindende reactie. We betogen dat deze turbulente tijd vraagt om organisaties die erin slagen om zowel sterke interne als krachtige externe coalities te creëren, nodig om de kwaliteit van de dienstverlening te waarborgen en betekenisvol te innoveren.
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Abstract Objective: To describe changes in the health service delivery process experienced by professionals, patients and informal caregivers during implementation of a national programme to improve quality of care of geriatric rehabilitation by improving integration of health service delivery processes. Study setting: Sixteen skilled nursing facilities. Study design: Prospective study, comparing three consecutive cohorts. Data collection: Professionals (elderly care physicians, physiotherapists and nursing staff) rated four domains of health service delivery at admission and at discharge of 1075 patients. In addition, these patients [median age 79 (Interquartile range 71–85) years, 63% females] and their informal caregivers rated their experiences on these domains 4 weeks after discharge. Principal findings: During the three consecutive cohorts, professionals reported improvement on the domain team cooperation, including assessment for intensive treatment and information transfer among professionals. Fewer improvements were reported within the domains alignment with patients’ needs, care coordination and care quality. Between the cohorts, according to patients (n = 521) and informal caregivers (n = 319) there were no changes in the four domains of health service delivery. Conclusion: This national programme resulted in small improvements in team cooperation as reported by the professionals. No effects were found on patients’ and informal caregivers’ perceptions of health service delivery.
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The COVID-19 pandemic affected the lives of older adults. Yet, little is known about changes in well-being among older adults during the pandemic, especially when COVID-19 measures were relaxed. Therefore, we aimed to assess changes in the well-being of older adults during multiple turning points of the pandemic. This longitudinal study included data from Dutch older adults (≥65 years old) participating in the Lifelines COVID-19 cohort. Data consisted of seven questionnaires, administered every 2-4 months between May 2020 and October 2021. The outcomes were quality of life (n = 14 682), physical fitness (n = 14 761), and feelings of isolation (n = 14 611), all graded on a scale from 0 to 10. Changes in well-being were analysed by multivariable linear mixed-effects models. The context of measures was described using the Government Stringency Index. Quality of life and feelings of isolation decreased when measures were tightened and increased when measures were relaxed. For example, when measures relaxed after the first lockdown in May 2020, quality of life increased by 0.23 [95% confidence interval (CI): 0.16-0.29] towards July 2020. Physical fitness decreased by 0.26 [95% CI: 0.15-0.37] during the study period. Differences between subsamples were not found, except for sex in feelings of isolation, which differences diminished after a period of relaxed measures. Changes in quality of life and feelings of isolation improved after periods of stringent COVID-19 measures. Physical fitness did not improve after measures were relaxed, suggesting a possible negative effect of the pandemic on the physical fitness of older adults.
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Heart-rate changes after transition from a supine to a standing posture were measured in 12 hypertensive and 12 normotensive primigravid women, in their last trimester of gestation. The subjects beat-to-beat heart-rate (HR) changes were recorded on both an ordinary cardiotocograph and on magnetic tape. The hypertensive patient group (1) reached an HR-maximum after standing up in a significantly shorter period of time and (2) had a significantly lower HR during 1 min erect posture. A population threatened by pregnancy-induced hypertension might be detected by using the non-invasive method of recording the maternal beat-to-beat heart-rate changes after transition to the standing posture, even before the onset of hypertension
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Onderwijsvernieuwing is een complex proces met veel aspecten. Vernieuwing wordt beïnvloed door het curriculum, de docent, de organisatie en de cultuur. Vernieuwing is een kettingreactie en de reactie dooft uit wanneer onvoldoende rekening wordt gehouden met de verschillende aspecten.
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