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Laser–solid interactions are highly suited as a potential source of high energy X-rays for nondestructive imaging. A bright, energetic X-ray pulse can be driven from a small source, making it ideal for high resolution X-ray radiography. By limiting the lateral dimensions of the target we are able to confine the region over which X-rays are produced, enabling imaging with enhanced resolution and contrast. Using constrained targets we demonstrate experimentally a
X-ray source, improving the image quality compared to unconstrained foil targets. Modelling demonstrates that a larger sheath field envelope around the perimeter of the constrained targets increases the proportion of electron current that recirculates through the target, driving a brighter source of X-rays.
The majority of self-management interventions are designed with a narrow focus on patient skills and fail to consider their potential as “catalysts” for improving care delivery. A project was undertaken to develop a patient self-management resource to support evidence-based, person-centered care for cancer pain and overcome barriers at the levels of the patient, provider, and health system.
The project used a mixed-method design with concurrent triangulation, including the following: a national online survey of current practice; two systematic reviews of cancer pain needs and education; a desktop review of online patient pain diaries and other related resources; consultation with stakeholders; and interviews with patients regarding acceptability and usefulness of a draft resource.
Findings suggested that an optimal self-management resource should encourage pain reporting, build patients’ sense of control, and support communication with providers and coordination between services. Each of these characteristics was identified as important in overcoming established barriers to cancer pain care. A pain self-management resource was developed to include: (1) a template for setting specific, measureable, achievable, relevant and time-bound goals of care, as well as identifying potential obstacles and ways to overcome these; and (2) a pain management plan detailing exacerbating and alleviating factors, current strategies for management, and contacts for support.
Significance of results
Self-management resources have the potential for addressing barriers not only at the patient level, but also at provider and health system levels. A cluster randomized controlled trial is under way to test effectiveness of the resource designed in this project in combination with pain screening, audit and feedback, and provider education. More research of this kind is needed to understand how interventions at different levels can be optimally combined to overcome barriers and improve care.
The aim of this study was to describe patient level costing methods and develop a database of healthcare resource use and cost in patients with AHF receiving ventricular assist device (VAD) therapy.
Patient level micro-costing was used to identify documented activity in the years preceding and following VAD implantation, and preceding heart transplant for a cohort of seventy-seven consecutive patients listed for heart transplantation (2009–12). Clinician interviews verified activity, established time resource required for each activity, and added additional undocumented activities. Costs were sourced from the general ledger, salary, stock price, pharmacy formulary data, and from national medical benefits and prostheses lists. Linked administrative data analyses of activity external to the implanting institution, used National Weighted Activity Units (NWAU), 2014 efficient price, and admission complexity cost weights and were compared with micro-costed data for the implanting admission.
The database produced includes patient level activity and costs associated with the seventy-seven patients across thirteen resource areas including hospital activity external to the implanting center. The median cost of the implanting admission using linked administrative data was $246,839 (interquartile range [IQR] $246,839–$271,743), versus $270,716 (IQR $211,740–$378,482) for the institutional micro-costing (p = .08).
Linked administrative data provides a useful alternative for imputing costs external to the implanting center, and combined with institutional data can illuminate both the pathways to transplant referral and the hospital activity generated by patients experiencing the terminal phases of heart failure in the year before transplant, cf-VAD implant, or death.