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1.
Clin Teach ; 21(4): e13758, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38643984

RESUMO

INTRODUCTION: There are increasing numbers of Master's Degree Programmes in Health Professions Education (MHPE), and the value to their students and graduates is not well understood. We conducted a scoping review to explore what is known about the value of MHPE programmes to their students and graduates. METHODS: A scoping review was conducted using Arksey and O'Malley's five-stage framework. PubMed, CINAHL, Cochrane, BEI, ERIC and EThOs databases were searched in addition to cited reference searching. Original research with an evaluation and published in the English language were included. RESULTS: Nineteen studies were included. Studies were based in a variety of locations on five continents, and included in-person, distance and blended learning. Students and graduates of MHPE programmes self-reported development of their pedagogical knowledge, confidence and credibility in their role as an educator, and educational scholarship. Enhanced career opportunities and opportunities for collegial interactions and networks were also reported. Important barriers included struggling with the time and financial commitments required for studying on a MHPE programme. CONCLUSIONS: There are a variety of dimensions of value of MHPE programmes to their students and graduates. Important practical recommendations for MHPE programme providers and employers include providing opportunities for the development of networks and supporting the time and financial commitments required for studying.


Assuntos
Ocupações em Saúde , Humanos , Ocupações em Saúde/educação , Educação de Pós-Graduação/organização & administração
2.
Phys Med ; 112: 102643, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37523926

RESUMO

A Geant4 based simulation platform of the Holland Proton Therapy Centre (HollandPTC, Netherlands) R&D beamline (G4HPTC-R&D) was developed to enable the planning, optimisation and advanced dosimetry for radiobiological studies. It implemented a six parameter non-symmetrical Gaussian pencil beam surrogate model to simulate the R&D beamline in both a pencil beam and passively scattered field configuration. Three different experimental proton datasets (70 MeV, 150 MeV, and 240 MeV) of the pencil beam envelope evolution in free air and depth-dose profiles in water were used to develop a set of individual parameter surrogate functions to enable the modelling of the non-symmetrical Gaussian pencil beam properties with only the ProBeam isochronous cyclotron mean extraction proton energy as input. This refined beam model was then benchmarked with respect to three independent experimental datasets of the R&D beamline operating in both a pencil beam configuration at 120 and 200 MeV, and passively scattered field configuration at 150 MeV. It was shown that the G4HPTC-R&D simulation platform can reproduce the pencil beam envelope evolution in free air and depth-dose profiles to within an accuracy on the order of ±5% for all tested energies, and that it was able to reproduce the 150 MeV passively scattered field to the specifications need for clinical and radiobiological applications.


Assuntos
Terapia com Prótons , Prótons , Método de Monte Carlo , Terapia com Prótons/métodos , Simulação por Computador , Síncrotrons , Dosagem Radioterapêutica
3.
Phys Med ; 112: 102613, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37356419

RESUMO

PURPOSE: This study aimed to develop a computational environment for the accurate simulation of human cancer cell irradiation using Geant4-DNA. New cell geometrical models were developed and irradiated by alpha particle beams to induce DNA damage. The proposed approach may help further investigation of the benefits of external alpha irradiation therapy. METHODS: The Geant4-DNA Monte Carlo (MC) toolkit allows the simulation of cancer cell geometries that can be combined with accurate modelling of physical, physicochemical and chemical stages of liquid water irradiation, including radiolytic processes. Geant4-DNA is used to calculate direct and non-direct DNA damage yields, such as single and double strand breaks, produced by the deposition of energy or by the interaction of DNA with free radicals. RESULTS: In this study, the "molecularDNA" example application of Geant4-DNA was used to quantify early DNA damage in human cancer cells upon irradiation with alpha particle beams, as a function of linear energy transfer (LET). The MC simulation results are compared to experimental data, as well as previously published simulation data. The simulation results agree well with the experimental data on DSB yields in the lower LET range, while the experimental data on DSB yields are lower than the results obtained with the "molecularDNA" example in the higher LET range. CONCLUSION: This study explored and demonstrated the possibilities of the Geant4-DNA toolkit together with the "molecularDNA" example to simulate the helium beam irradiation of cancer cell lines, to quantify the early DNA damage, or even the following DNA damage response.


Assuntos
Hélio , Neoplasias , Humanos , Simulação por Computador , Transferência Linear de Energia , DNA , Método de Monte Carlo , Dano ao DNA , Neoplasias/radioterapia
4.
Phys Med ; 105: 102508, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36549067

RESUMO

PURPOSE: Track structure Monte Carlo (MC) codes have achieved successful outcomes in the quantitative investigation of radiation-induced initial DNA damage. The aim of the present study is to extend a Geant4-DNA radiobiological application by incorporating a feature allowing for the prediction of DNA rejoining kinetics and corresponding cell surviving fraction along time after irradiation, for a Chinese hamster V79 cell line, which is one of the most popular and widely investigated cell lines in radiobiology. METHODS: We implemented the Two-Lesion Kinetics (TLK) model, originally proposed by Stewart, which allows for simulations to calculate residual DNA damage and surviving fraction along time via the number of initial DNA damage and its complexity as inputs. RESULTS: By optimizing the model parameters of the TLK model in accordance to the experimental data on V79, we were able to predict both DNA rejoining kinetics at low linear energy transfers (LET) and cell surviving fraction. CONCLUSION: This is the first study to demonstrate the implementation of both the cell surviving fraction and the DNA rejoining kinetics with the estimated initial DNA damage, in a realistic cell geometrical model simulated by full track structure MC simulations at DNA level and for various LET. These simulation and model make the link between mechanistic physical/chemical damage processes and these two specific biological endpoints.


Assuntos
Dano ao DNA , Prótons , Cricetinae , Animais , Sobrevivência Celular , Cinética , DNA/química , Método de Monte Carlo
5.
Int J Med Robot ; 19(2): e2492, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-36524325

RESUMO

BACKGROUND: Several automated skill-assessment approaches have been proposed for robotic surgery, but their utility is not well understood. This article investigates the effects of one machine-learning-based skill-assessment approach on psychomotor skill development in robotic surgery training. METHODS: N = 29 trainees (medical students and residents) with no robotic surgery experience performed five trials of inanimate peg transfer with an Intuitive Surgical da Vinci Standard robot. Half of the participants received no post-trial feedback. The other half received automatically calculated scores from five Global Evaluative Assessment of Robotic Skill domains post-trial. RESULTS: There were no significant differences between the groups regarding overall improvement or skill improvement rate. However, participants who received post-trial feedback rated their overall performance improvement significantly lower than participants who did not receive feedback. CONCLUSIONS: These findings indicate that automated skill evaluation systems might improve trainee self-awareness but not accelerate early stage psychomotor skill development in robotic surgery training.


Assuntos
Procedimentos Cirúrgicos Robóticos , Robótica , Humanos , Análise e Desempenho de Tarefas , Competência Clínica , Procedimentos Cirúrgicos Robóticos/educação , Robótica/educação
6.
BMJ Open Respir Res ; 8(1)2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34764200

RESUMO

INTRODUCTION: Post-COVID-19 complications require simultaneous characterisation and management to plan policy and health system responses. We describe the 12-month experience of the first UK dedicated post-COVID-19 clinical service to include hospitalised and non-hospitalised patients. METHODS: In a single-centre, observational analysis, we report the demographics, symptoms, comorbidities, investigations, treatments, functional recovery, specialist referral and rehabilitation of 1325 individuals assessed at the University College London Hospitals post-COVID-19 service between April 2020 and April 2021, comparing by referral route: posthospitalised (PH), non-hospitalised (NH) and post emergency department (PED). Symptoms associated with poor recovery or inability to return to work full time were assessed using multivariable logistic regression. RESULTS: 1325 individuals were assessed (PH: 547, 41.3%; PED: 212, 16%; NH: 566, 42.7%). Compared with the PH and PED groups, the NH group were younger (median 44.6 (35.6-52.8) years vs 58.3 (47.0-67.7) years and 48.5 (39.4-55.7) years), more likely to be female (68.2%, 43.0% and 59.9%), less likely to be of ethnic minority (30.9%, 52.7% and 41.0%) or seen later after symptom onset (median (IQR): 194 (118-298) days, 69 (51-111) days and 76 (55-128) days; all p<0.0001). All groups had similar rates of onward specialist referral (NH 18.7%, PH 16.1% and PED 18.9%, p=0.452) and were more likely to require support for breathlessness (23.7%, 5.5% and 15.1%, p<0.001) and fatigue (17.8%, 4.8% and 8.0%, p<0.001). Hospitalised patients had higher rates of pulmonary emboli, persistent lung interstitial abnormalities and other organ impairment. 716 (54.0%) individuals reported <75% optimal health (median 70%, IQR 55%-85%). Less than half of employed individuals could return to work full time at first assessment. CONCLUSION: Post-COVID-19 symptoms were significant in PH and NH patients, with significant ongoing healthcare needs and utilisation. Trials of interventions and patient-centred pathways for diagnostic and treatment approaches are urgently required.


Assuntos
COVID-19 , Atenção à Saúde , Etnicidade , Feminino , Humanos , Masculino , Grupos Minoritários , Estudos Prospectivos , SARS-CoV-2
7.
Value Health ; 24(9): 1241-1244, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34452702

RESUMO

The value of real-world evidence (RWE) in medicines regulation and health technology assessment has been increasingly emphasized. Nevertheless, although RWE is increasingly used, there has been limited systematic evidence of its value. A recent study that examined the role and impact of RWE in regulatory assessments conducted through the European Medicines Agency provided such evidence. Results of the study demonstrated RWE was important to decision making, particularly for certain questions such as the quantification of adverse events, the evaluation of risk minimization measures, and the assessment of product usage. The study suggested, however, that in many of the assessments further RWE would have been valuable and concluded that RWE has, as yet, played a limited role in hypothesis generation and in the assessment of medication effectiveness. This study had been possible only because of the transparency of the European Medicines Agency decision making. Ensuring transparency of RWE evidence collection, study design and conduct, and of decision making based on this evidence will facilitate further development of the uses and value of RWE. Keywords: benefit-risk assessment; medicines regulation; real-world evidence; regulatory decision making.


Assuntos
Medicina Baseada em Evidências , Regulamentação Governamental , Medição de Risco , Avaliação da Tecnologia Biomédica , Tomada de Decisões , Humanos , Projetos de Pesquisa , Estados Unidos
8.
Ann Rheum Dis ; 80(7): 943-951, 2021 07.
Artigo em Inglês | MEDLINE | ID: mdl-33478953

RESUMO

OBJECTIVES: To assess the association between routinely prescribed non-steroidal anti-inflammatory drugs (NSAIDs) and deaths from COVID-19 using OpenSAFELY, a secure analytical platform. METHODS: We conducted two cohort studies from 1 March to 14 June 2020. Working on behalf of National Health Service England, we used routine clinical data in England linked to death data. In study 1, we identified people with an NSAID prescription in the last 3 years from the general population. In study 2, we identified people with rheumatoid arthritis/osteoarthritis. We defined exposure as current NSAID prescription within the 4 months before 1 March 2020. We used Cox regression to estimate HRs for COVID-19 related death in people currently prescribed NSAIDs, compared with those not currently prescribed NSAIDs, accounting for age, sex, comorbidities, other medications and geographical region. RESULTS: In study 1, we included 536 423 current NSAID users and 1 927 284 non-users in the general population. We observed no evidence of difference in risk of COVID-19 related death associated with current use (HR 0.96, 95% CI 0.80 to 1.14) in the multivariable-adjusted model. In study 2, we included 1 708 781 people with rheumatoid arthritis/osteoarthritis, of whom 175 495 (10%) were current NSAID users. In the multivariable-adjusted model, we observed a lower risk of COVID-19 related death (HR 0.78, 95% CI 0.64 to 0.94) associated with current use of NSAID versus non-use. CONCLUSIONS: We found no evidence of a harmful effect of routinely prescribed NSAIDs on COVID-19 related deaths. Risks of COVID-19 do not need to influence decisions about the routine therapeutic use of NSAIDs.


Assuntos
Anti-Inflamatórios não Esteroides/efeitos adversos , Artrite Reumatoide/tratamento farmacológico , COVID-19/mortalidade , Osteoartrite/tratamento farmacológico , SARS-CoV-2 , Adulto , Idoso , Artrite Reumatoide/virologia , COVID-19/complicações , Estudos de Coortes , Prescrições de Medicamentos/estatística & dados numéricos , Inglaterra/epidemiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Osteoartrite/virologia , Fatores de Risco , Medicina Estatal
9.
Wellcome Open Res ; 6: 360, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-35634533

RESUMO

Background: At the outset of the COVID-19 pandemic, there was no routine comprehensive hospital medicines data from the UK available to researchers. These records can be important for many analyses including the effect of certain medicines on the risk of severe COVID-19 outcomes. With the approval of NHS England, we set out to obtain data on one specific group of medicines, "high-cost drugs" (HCD) which are typically specialist medicines for the management of long-term conditions, prescribed by hospitals to patients. Additionally, we aimed to make these data available to all approved researchers in OpenSAFELY-TPP. This report is intended to support all studies carried out in OpenSAFELY-TPP, and those elsewhere, working with this dataset or similar data. Methods: Working with the North East Commissioning Support Unit and NHS Digital, we arranged for collation of a single national HCD dataset to help inform responses to the COVID-19 pandemic. The dataset was developed from payment submissions from hospitals to commissioners. Results: In the financial year (FY) 2018/19 there were 2.8 million submissions for 1.1 million unique patient IDs recorded in the HCD. The average number of submissions per patient over the year was 2.6. In FY 2019/20 there were 4.0 million submissions for 1.3 million unique patient IDs. The average number of submissions per patient over the year was 3.1. Of the 21 variables in the dataset, three are now available for analysis in OpenSafely-TPP: Financial year and month of drug being dispensed; drug name; and a description of the drug dispensed. Conclusions: We have described the process for sourcing a national HCD dataset, making these data available for COVID-19-related analysis through OpenSAFELY-TPP and provided information on the variables included in the dataset, data coverage and an initial descriptive analysis.

10.
Ann Emerg Med ; 77(1): 57-61, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-32782083

RESUMO

STUDY OBJECTIVE: I determine the most recent data on National Institutes of Health (NIH) support for clinical emergency care research. METHODS: A search of the NIH category of emergency care from 2015 to 2018 was conducted, using a clinical focus and excluding animal and bench research projects, as well as career development grants. RESULTS: During the study period, the number of new emergency care projects submitted to NIH increased from 373 in 2015 to 434 in 2018. A total of 403 new applications were funded for $161.9 million, with an overall success rate of 24%. The total amount of support for both new and existing projects during the 4-year study period was $263 million. The number of funded R01 grants increased from 17 in 2015 to 32 in 2018, with an overall success rate of 21%. There were fewer emergency care grant submissions than those for other similar-sized disciplines. CONCLUSION: During the 4-year study period, emergency care research increased, but the number of grant submissions remains low.


Assuntos
Pesquisa Biomédica , Serviços Médicos de Emergência , National Institutes of Health (U.S.)/estatística & dados numéricos , Apoio à Pesquisa como Assunto/estatística & dados numéricos , Pesquisa Biomédica/economia , Pesquisa Biomédica/estatística & dados numéricos , Serviços Médicos de Emergência/economia , Serviços Médicos de Emergência/estatística & dados numéricos , Humanos , National Institutes of Health (U.S.)/economia , Apoio à Pesquisa como Assunto/economia , Estados Unidos
12.
MedEdPublish (2016) ; 9: 84, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-38058912

RESUMO

This article was migrated. The article was marked as recommended. Introduction There are national and international concerns about equity in basic and postgraduate medical education, especially about differential rates of access and attainment across groups of learners. Qualitative research has been increasingly used to understand the factors that influence equity but there are potential limitations to this understanding related to how the research has been conducted. The aim of the scoping review was to identify how qualitative research exploring the factors that influence equity in basic and postgraduate medical education has been conducted. The intention was to inform future research. Methods The electronic databases British Education Index, Campbell Library, CINAHL, Cochrane Library, EMBASE, ERIC, Google Scholar, Health Management Information Consortium (HMIC), MEDLINE, PsycINFO, Web of Science and medical education journals were searched to identify relevant published articles between 2008 and April 2019. Results Among 19,523 articles identified from the literature search, 72 full text articles were included in the review. Most studies had a focus on only one background characteristic and only two studies had a strengths-based focus on individuals. Recommendations for change was at the 'policy level' in ten studies and four studies had learner recommendations for change. No studies with a participatory approach were identified. Conclusion The approach to conducting previous qualitative research appears to limit greater understanding of the complexity of factors that influence equity. In response to this challenge, we recommend that future research widen the focus to consider the experiences and strengths of individual learners in addition to those identified by background characteristics. Future qualitative research is recommended to have a broad focus on both the 'policy level' and 'local level', especially from multiple perspectives. We also recommend greater collaboration of participants with researchers throughout the research process.

14.
BMJ Open ; 9(10): e028133, 2019 10 28.
Artigo em Inglês | MEDLINE | ID: mdl-31662354

RESUMO

OBJECTIVES: To assess the use, and evaluate the usefulness, of non-interventional studies and routinely collected healthcare data in postmarketing assessments conducted by the European Medicines Agency (EMA). DESIGN: We reviewed and systematically assessed all referrals to the EMA made due to safety or efficacy concerns that were evaluated between 1 January 2013 and 30 June 2017. We extracted information from the assessment report and the referral notification. Two reviewers independently assessed the contribution of non-interventional evidence to decision-making. RESULTS: The preliminary evidence leading to the assessment in 52 eligible referrals was mostly from spontaneous reports (cited in 26 of 52 referrals) and randomised trials (22/52). In contrast, many evidence types were used for the full assessment. Non-interventional studies were frequently used in the full assessment for the evaluation of product safety (31/52) and product efficacy (18/52). In particular, non-interventional studies were relied on for the evaluation of safety and efficacy in subgroups, the evaluation of safety relating to a rare adverse event, understanding product usage and misuse and for evaluation of the effectiveness of risk minimisation measures. The most common recommendations were changes to product information (43/52) and marketing authorisation withdrawal or suspension (12/52). In the majority of referrals, non-interventional evidence was judged to contribute to the decision made (30/52) and in three referrals it was the primary source of evidence. CONCLUSIONS: European regulatory decision-making relies on multiple evidence types, particularly randomised trials, spontaneous reports and non-interventional studies. Non-interventional studies had an important role particularly for the characterisation and quantification of adverse events, the evaluation of product usage and for evaluating the effectiveness of regulatory action to minimise risk.


Assuntos
Controle de Medicamentos e Entorpecentes , Prática Clínica Baseada em Evidências , Vigilância de Produtos Comercializados , Coleta de Dados , Tomada de Decisões , Aprovação de Drogas , União Europeia , Humanos , Ensaios Clínicos Controlados não Aleatórios como Assunto , Estudos Observacionais como Assunto , Ensaios Clínicos Controlados Aleatórios como Assunto
15.
Educ Prim Care ; 30(5): 289-294, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-31354075

RESUMO

Introduction: Increasing the capacity of Primary Care to meet the challenge of providing future complex and multi-disciplinary care in England has led to the increasing establishment of 'Training Hubs' [TH]. Other terms are used interchangeably to refer to TH activity: Advanced Training Practices, Enhanced Training Practices and Community Education Providers. The aim of this study was to gather the perceptions of TH Leads in North West England on how they established their TH and lessons learned. Methods: Five semi-structured telephone interviews were undertaken with TH Leads. Thematic analysis of the transcripts was undertaken. Findings: Four themes were identified: Motivation and Expectations of Establishing THs; Benefits to Learners and Practice Staff; Implementation Challenges and Barriers to Scale-Up; Sustainability and Wider Implementation. Discussion: TH Leads highlighted that the establishment of THs enhanced the multi-disciplinary learning experience. However, several barriers for sustaining the quality of the TH learning environments were identified. Difficulties recruiting 'Spoke Practices' were greater than expected. Findings identified the following factors for consideration for wider implementation: the maintenance of TH Lead support networks; appropriateness of funding to encourage practices who may be reluctant to take on this additional responsibility; the importance of communication channels between THs and HEIs; careful management of students numbers.


Assuntos
Educação Médica/organização & administração , Educação em Enfermagem/organização & administração , Pessoal de Saúde/educação , Inglaterra , Humanos , Capacitação em Serviço/economia , Capacitação em Serviço/organização & administração , Atenção Primária à Saúde , Pesquisa Qualitativa
16.
Phys Med ; 62: 152-157, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-31109825

RESUMO

The advancement of multidisciplinary research fields dealing with ionising radiation induced biological damage - radiobiology, radiation physics, radiation protection and, in particular, medical physics - requires a clear mechanistic understanding of how cellular damage is induced by ionising radiation. Monte Carlo (MC) simulations provide a promising approach for the mechanistic simulation of radiation transport and radiation chemistry, towards the in silico simulation of early biological damage. We have recently developed a fully integrated MC simulation that calculates early single strand breaks (SSBs) and double strand breaks (DSBs) in a fractal chromatin based human cell nucleus model. The results of this simulation are almost equivalent to past MC simulations when considering direct/indirect strand break fraction, DSB yields and fragment distribution. The simulation results agree with experimental data on DSB yields within 13.6% on average and fragment distributions agree within an average of 34.8%.


Assuntos
Núcleo Celular/genética , Núcleo Celular/efeitos da radiação , Dano ao DNA , Fractais , Modelos Biológicos , Método de Monte Carlo , Animais , Quebras de DNA de Cadeia Dupla/efeitos da radiação , Quebras de DNA de Cadeia Simples/efeitos da radiação , Fatores de Tempo
17.
Health Technol Assess ; 23(1): 1-84, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-30618357

RESUMO

BACKGROUND: In the UK, patients with one or two adenomas, of which at least one is ≥ 10 mm in size, or three or four small adenomas, are deemed to be at intermediate risk of colorectal cancer (CRC) and referred for surveillance colonoscopy 3 years post polypectomy. However, colonoscopy is costly, can cause discomfort and carries a small risk of complications. OBJECTIVES: To determine whether or not annual faecal immunochemical tests (FITs) are effective, acceptable and cost saving compared with colonoscopy surveillance for detecting CRC and advanced adenomas (AAs). DESIGN: Diagnostic accuracy study with health psychology assessment and economic evaluation. SETTING: Participants were recruited from 30 January 2012 to 30 December 2013 within the Bowel Cancer Screening Programme in England. PARTICIPANTS: Men and women, aged 60-72 years, deemed to be at intermediate risk of CRC following adenoma removal after a positive guaiac faecal occult blood test were invited to participate. Invitees who consented and returned an analysable FIT were included. INTERVENTION: We offered participants quantitative FITs at 1, 2 and 3 years post polypectomy. Participants testing positive with any FIT were referred for colonoscopy and not offered further FITs. Participants testing negative were offered colonoscopy at 3 years post polypectomy. Acceptibility of FIT was assessed using discussion groups, questionnaires and interviews. MAIN OUTCOME MEASURES: The primary outcome was 3-year sensitivity of an annual FIT versus colonoscopy at 3 years for detecting advanced colorectal neoplasia (ACN) (CRC and/or AA). Secondary outcomes included participants' surveillance preferences, and the incremental costs and cost-effectiveness of FIT versus colonoscopy surveillance. RESULTS: Of 8008 invitees, 5946 (74.3%) consented and returned a round 1 FIT. FIT uptake in rounds 2 and 3 was 97.2% and 96.9%, respectively. With a threshold of 40 µg of haemoglobin (Hb)/g faeces (hereafter referred to as µg/g), positivity was 5.8% in round 1, declining to 4.1% in round 3. Over three rounds, 69.2% (18/26) of participants with CRC, 34.3% (152/443) with AAs and 35.6% (165/463) with ACN tested positive at 40 µg/g. Sensitivity for CRC and AAs increased, whereas specificity decreased, with lower thresholds and multiple rounds. At 40 µg/g, sensitivity and specificity of the first FIT for CRC were 30.8% and 93.9%, respectively. The programme sensitivity and specificity of three rounds at 10 µg/g were 84.6% and 70.8%, respectively. Participants' preferred surveillance strategy was 3-yearly colonoscopy plus annual FITs (57.9%), followed by annual FITs with colonoscopy in positive cases (31.5%). FIT with colonoscopy in positive cases was cheaper than 3-yearly colonoscopy (£2,633,382), varying from £485,236 (40 µg/g) to £956,602 (10 µg/g). Over 3 years, FIT surveillance could miss 291 AAs and eight CRCs using a threshold of 40 µg/g, or 189 AAs and four CRCs using a threshold of 10 µg/g. CONCLUSIONS: Annual low-threshold FIT with colonoscopy in positive cases achieved high sensitivity for CRC and would be cost saving compared with 3-yearly colonoscopy. However, at higher thresholds, this strategy could miss 15-30% of CRCs and 40-70% of AAs. Most participants preferred annual FITs plus 3-yearly colonoscopy. Further research is needed to define a clear role for FITs in surveillance. FUTURE WORK: Evaluate the impact of ACN missed by FITs on quality-adjusted life-years. TRIAL REGISTRATION: Current Controlled Trials ISRCTN18040196. FUNDING: National Institute for Health Research (NIHR) Health Technology Assessment programme, NIHR Imperial Biomedical Research Centre and the Bobby Moore Fund for Cancer Research UK. MAST Group Ltd provided FIT kits.


Assuntos
Neoplasias Colorretais/diagnóstico , Detecção Precoce de Câncer/economia , Detecção Precoce de Câncer/métodos , Sangue Oculto , Idoso , Colonoscopia/economia , Colonoscopia/métodos , Análise Custo-Benefício , Detecção Precoce de Câncer/psicologia , Detecção Precoce de Câncer/normas , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Hemoglobinas/análise , Humanos , Imunoquímica/economia , Imunoquímica/métodos , Masculino , Pessoa de Meia-Idade , Preferência do Paciente , Sensibilidade e Especificidade , Reino Unido
18.
Am J Emerg Med ; 37(10): 1850-1854, 2019 10.
Artigo em Inglês | MEDLINE | ID: mdl-30595424

RESUMO

OBJECTIVES: We sought to compare National Institutes of Health (NIH) funding received by Emergency Medicine (EM) to the specialties of Family Medicine, Neurology, Orthopedics, Pediatrics and Psychiatry over the 10-year period from 2008 to 2017. METHODS: The NIH database of both submitted and funded NIH applications were queried and crossed with the departmental affiliation of the principal investigator. Research Grants were defined by the following activity codes: R, P, M, S, K, U (excluding UC6), DP1, DP2, DP3, DP4, DP5, D42 and G12. Derived data were further analyzed using information from the Association of American Medical Colleges to determine the relationship between the number of awards and the size of respective teaching and research faculty. RESULTS: From 2008 to 2017, there were a total of 14,676 funded grants across included specialties with total monetary support of $6.002 billion. Of these funded grants, 250 (1.7%) were from EM principal investigators which corresponded to total support of $89,453,635 (1.5% of overall dollars). There was an increase in total support after 2012 in EM, however when compared to the other specialties, EM investigators submitted relatively fewer grants and awarded grants were funded by a wider distribution of NIH Institutes and Centers (ICs). CONCLUSIONS: Compared to other select specialties, EM investigators accounted for a small proportion of grants submitted and funded over the past decade. Though findings illustrate promising trends, to foster success, more submitted grant applications are needed from within EM along with systematic approaches to support faculty members in their pursuit of NIH funding.


Assuntos
Pesquisa Biomédica/economia , Medicina de Emergência/economia , National Institutes of Health (U.S.)/economia , Apoio à Pesquisa como Assunto/tendências , Pesquisa Biomédica/tendências , Humanos , Estudos Retrospectivos , Estados Unidos
19.
Artigo em Inglês | MEDLINE | ID: mdl-30222557

RESUMO

A miniature, 10 mm aperture histotripsy transducer with an f-number of 0.7 was fabricated using an elliptically shaped aluminum lens, which was epoxy-bonded to an air-backed 5.0 MHz, PTZ-5A, 1-3 dice-and-fill piezoelectric composite, and the lens coupled to water using a quarter-wavelength matching layer of Parylene-C. A Krimholtz-Leedom-Matthaei model of the device and curved lens was developed. The epoxy layer resulted in an increased power output at 6.8 MHz compared to the 5 MHz composite design. Cavitation was observed in water by driving the composite with a 173 V single-cycle, unipolar 6.8 MHz pulse at a pulse repetition frequency of 50 Hz, and a bubble cloud 264 long by 124 wide was measured. A coregistered imaging and ablation device was also fabricated and characterized. The coregistered device was modified to include a mm square hole through the center, allowing access for a high-frequency imaging array, and both imaging and ablation are demonstrated in cerebral tissue with this device. Radial -3 dB beam widths were measured as 0.145 and 0.116 mm, and axial -3 dB depths of field were 0.698 and 0.752 mm for the noncoregistered and coregistered transducers, respectively. Total material cost for the transducer and pulser board is below $200 USD.


Assuntos
Ablação por Ultrassom Focalizado de Alta Intensidade/instrumentação , Transdutores , Endoscópios , Desenho de Equipamento , Imagens de Fantasmas
20.
Br J Nurs ; 27(14): 817-824, 2018 Jul 26.
Artigo em Inglês | MEDLINE | ID: mdl-30048192

RESUMO

BACKGROUND: Leading Change, Adding Value (LCAV) is a national framework to support transformational change across health and social care. DESIGN: a qualitative approach of semi-structured interviews was used to capture information on how LCAV has been disseminated in its early stages from the perspective of key stakeholders and partners. This also included looking at how it might be embedded into everyday practice. METHODS: data collection took place over a 3-month period between January and March 2017. Twenty semi-structured telephone interviews were conducted with key LCAV partners and stakeholders from across health and social care. Perceptions were sought as to how LCAV has been, and may be, used by frontline staff following initial dissemination and any potential barriers and enablers to taking the framework forward. RESULTS: a thematic framework analysis of data identified a three-theme paradigm to evaluate LCAV: past-where has this come from? Present-where is it now? Future-where is this going?. CONCLUSION: a programme of dissemination events and examples of good practice in the form of case studies have been valuable tools to engage nursing, midwifery and care staff across health and social care. Continuing to establish networks of frontline staff engaging with LCAV and supporting each other will help facilitate best practice sharing, and multi-professional and cross-boundary working.


Assuntos
Liderança , Inovação Organizacional , Estudos de Avaliação como Assunto , Inquéritos e Questionários , Reino Unido
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