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1.
Br Paramed J ; 9(1): 47-57, 2024 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-38946737

RESUMO

Background: Emergency medical services (EMS) are often patients' first point of contact for urgent and emergency care needs. Patients are triaged over the phone and may receive an ambulance response, with potential conveyance to the hospital. A recent scoping review suggested disparities in EMS patient care in the United States. However, it is unknown how health inequalities impact EMS care in other developed countries and how inequalities are being addressed. Objectives: This rapid evidence map of published literature aims to map known health inequalities in EMS patients and describe interventions reducing health inequalities in EMS patient care. Methods: The search strategy consisted of EMS synonyms and health inequality synonyms. The MEDLINE/PubMed database was searched from 1 January 2010 to 26 July 2022. Studies were included if they described empirical research exploring health inequalities within ambulance service patient care. Studies were mapped on to the EMS care interventions framework and Core20PLUS5 framework. Studies evaluating interventions were synthesised using the United Kingdom Allied Health Professions Public Health Strategic Framework. Results: The search strategy yielded 771 articles, excluding duplicates, with two more studies added from hand searches. One hundred studies met the inclusion criteria after full-text review. Inequalities in EMS patient care were predominantly situated in assessment, treatment and conveyance, although triage and response performance were also represented. Studies mostly explored EMS health inequalities within ethnic minority populations, populations with protected characteristics and the core issue of social deprivation. Studies evaluating interventions reducing health inequalities (n = 5) were from outside the United Kingdom and focused on older patients, ethnic minorities and those with limited English proficiency. Interventions included community paramedics, awareness campaigns, dedicated language lines and changes to EMS protocols. Conclusions: Further UK-based research exploring health inequalities of EMS patients would support ambulance service policy and intervention development to reduce health inequality in urgent and emergency care delivery.

2.
Cleft Palate Craniofac J ; : 10556656241258687, 2024 Jun 11.
Artigo em Inglês | MEDLINE | ID: mdl-38860332

RESUMO

OBJECTIVE: A Growth and Feeding Clinic (GFC) focused on early intervention around feeding routines in patients with cleft lip and/or palate (CL/P) was implemented. DESIGN: This study assessed the effect of preoperative feeding interventions provided by the GFC. SETTING: Tertiary academic center. METHODS: This study evaluated patients with CL/P who were cared for by the GFC and a control group of patients with CL/P. Weight-for-age (WFA) Z-score of less than -2.00 was used as a cutoff to classify patients who were underweight during the preoperative period. MAIN OUTCOME MEASURE: The number of underweight patients who were able to reach normal weight by the time of their cleft lip repair was used as the primary outcome measure. RESULTS: Within both the GFC and control groups, 25% of patients with CL/P were underweight as determined by WFA Z-score. GFC patients who were underweight received more clinic visits (P < .001) and GFC interventions (P < .001) compared to GFC patients who were normal weight. At the time of cleft lip surgery, 64.1% of GFC underweight patients were normal weight compared to 31.8% of control group underweight patients (P = .0187). CONCLUSION: This study showed that multidisciplinary care provided by the GFC was able to target preoperative nutritional interventions to the highest-risk patients, resulting in double the percentage of patients who were of normal weight at the time of their cleft lip repair. These results provide objective proof supporting the assertion that multidisciplinary team care of the infant with cleft leads to measurable improvement in outcomes.

3.
Teach Teach Educ ; 142: 104540, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38694559

RESUMO

Although teachers and administrators increasingly support the idea of student voice, questions remain about what "student voice" looks like in practice. This mixed methods study in two urban U.S. high schools explores what student voice practices in the classroom entail and how these practices relate to other pedagogical strategies. Findings reveal that student-teacher relationships, differentiated instruction, and choice serve as core building blocks for the use of student voice practices in the classroom. Findings also underscore the rarity of the student voice practices of seeking student feedback and input and engaging in collaborative decision-making with students.

4.
ERJ Open Res ; 10(3)2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38770006

RESUMO

Spirometry is underutilised and can be difficult to access. This study assessed the accuracy and feasibility of home spirometry compared to gold standard. Findings suggest home spirometry is accurate and feasible across many respiratory disease groups. https://bit.ly/42TLoYd.

5.
J Vasc Res ; 61(1): 26-37, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38113863

RESUMO

INTRODUCTION: Tunica media extracellular matrix (ECM) remodeling is well understood to occur in response to elevated blood pressure, unlike the remodeling of other tunicas. We hypothesize that perivascular adipose tissue (PVAT) is responsive to hypertension and remodels as a protective measure. METHODS: The adventitia and PVAT of the thoracic aorta were used in measuring ECM genes from 5 pairs of Dahl SS male rats on 8 or 24 weeks of feeding from weaning on a control (10% Kcal fat) or high-fat (HF; 60%) diet. A PCR array of ECM genes was performed with cDNA from adventitia and PVAT after 8 and 24 weeks. A gene regulatory network of the differentially expressed genes (DEGs) (HF 2-fold > con) was created using Cytoscape. RESULTS: After 8 weeks, 29 adventitia but 0 PVAT DEGs were found. By contrast, at 24 weeks, PVAT possessed 47 DEGs while adventitia had 3. Top DEGs at 8 weeks in adventitia were thrombospondin 1 and collagen 8a1. At 24 weeks, thrombospondin 1 was also a top DEG in PVAT. The transcription factor Adarb1 was identified as a regulator of DEGs in 8-week adventitia and 24-week PVAT. CONCLUSION: These data support that PVAT responds biologically once blood pressure is elevated.


Assuntos
Dieta Hiperlipídica , Hipertensão , Ratos , Animais , Masculino , Trombospondina 1 , Pressão Sanguínea , Ratos Endogâmicos Dahl , Tecido Adiposo , Hipertensão/genética
6.
Healthcare (Basel) ; 11(16)2023 Aug 08.
Artigo em Inglês | MEDLINE | ID: mdl-37628427

RESUMO

Research suggests that feedback in Emergency Medical Services (EMS) positively affects quality of care and professional development. However, the mechanisms by which feedback achieves its effects still need to be better understood across healthcare settings. This study aimed to understand how United Kingdom (UK) ambulance services provide feedback for EMS professionals and develop a programme theory of how feedback works within EMS, using a mixed-methods, realist evaluation framework. A national cross-sectional survey was conducted to identify feedback initiatives in UK ambulance services, followed by four in-depth case studies involving qualitative interviews and documentary analysis. We used qualitative content analysis and descriptive statistics to analyse survey responses from 40 prehospital feedback initiatives, alongside retroductive analysis of 17 interviews and six documents from case study sites. Feedback initiatives mainly provided individual patient outcome feedback through "pull" initiatives triggered by staff requests. Challenges related to information governance were identified. Our programme theory of feedback to EMS professionals encompassed context (healthcare professional and organisational characteristics), mechanisms (feedback and implementation characteristics, psychological reasoning) and outcomes (implementation, staff and service outcomes). This study suggests that most UK ambulance services use a range of feedback initiatives and provides 24 empirically based testable hypotheses for future research.

8.
BMC Health Serv Res ; 23(1): 444, 2023 May 05.
Artigo em Inglês | MEDLINE | ID: mdl-37147658

RESUMO

BACKGROUND: Paramedicine presents students with numerous challenges, including factors threatening their wellbeing. Over the last two decades studies have illustrated that paramedics and paramedic students are more likely to have mental disorders than the general population. These findings suggest that course-related factors could be important in contributing to poorer mental health. However, few studies have examined factors related to stress in paramedic students, and none of these have included paramedic students from cross-culture. To address this, the present study (1) explored paramedicine students' training experiences and other education-related factors that could affect their wellbeing, and (2) illustrated the possible differences and similarities between two cultures (Saudi Arabia and the UK) to determine whether the students' cultural environment influenced factors related to their wellbeing. METHODS: A qualitative exploratory research design was used. Twenty semi-structured interviews were conducted with paramedicine students from the United Kingdom and Kingdom of Saudi Arabia (ten participants from each country). Reflexive thematic analysis was employed as the analytical approach in this study. RESULTS: Four major themes were identified which captured the contributors to paramedic students' stress levels: (1) exposure to potentially traumatic events, (2) relationships and communication, illustrating the student's personal and professional experiences with others, (3) programme atmosphere, demonstrating the challenges and support students encounter during their coursework and training, and (4) career, elucidating the pressure of future career expectations and predictions. CONCLUSION: The study revealed contributors to stress were similar in both countries. Better preparation can help to reduce the negative impacts of the possible traumatic events encountered on placements and supportive relationships, especially with proctors, can boost student wellbeing. Universities are able to address both these factors and help foster a positive environment for paramedicine students. As such, these results should help educators and policymakers when identifying and delivering interventions to support paramedic students.


Assuntos
Comparação Transcultural , Paramédico , Humanos , Arábia Saudita/epidemiologia , Reino Unido , Estudantes , Pesquisa Qualitativa
9.
BMJ Qual Saf ; 32(10): 573-588, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-37028937

RESUMO

BACKGROUND: Extensive research has been conducted into the effects of feedback interventions within many areas of healthcare, but prehospital emergency care has been relatively neglected. Exploratory work suggests that enhancing feedback and follow-up to emergency medical service (EMS) staff might provide staff with closure and improve clinical performance. Our aim was to summarise the literature on the types of feedback received by EMS professionals and its effects on the quality and safety of patient care, staff well-being and professional development. METHODS: A systematic review and meta-analysis, including primary research studies of any method published in peer-reviewed journals. Studies were included if they contained information on systematic feedback to emergency ambulance staff regarding their performance. Databases searched from inception were MEDLINE, Embase, AMED, PsycINFO, HMIC, CINAHL and Web of Science, with searches last updated on 2 August 2022. Study quality was appraised using the Mixed Methods Appraisal Tool. Data analysis followed a convergent integrated design involving simultaneous narrative synthesis and random effects multilevel meta-analyses. RESULTS: The search strategy yielded 3183 articles, with 48 studies meeting inclusion criteria after title/abstract screening and full-text review. Interventions were categorised as audit and feedback (n=31), peer-to-peer feedback (n=3), postevent debriefing (n=2), incident-prompted feedback (n=1), patient outcome feedback (n=1) or a combination thereof (n=4). Feedback was found to have a moderate positive effect on quality of care and professional development with a pooled effect of d=0.50 (95% CI 0.34, 0.67). Feedback to EMS professionals had large effects in improving documentation (d=0.73 (0.00, 1.45)) and protocol adherence (d=0.68 (0.12, 1.24)), as well as small effects in enhancing cardiac arrest performance (d=0.46 (0.06, 0.86)), clinical decision-making (d=0.47 (0.23, 0.72)), ambulance times (d=0.43 (0.12, 0.74)) and survival rates (d=0.22 (0.11, 0.33)). The between-study heterogeneity variance was estimated at σ2=0.32 (95% CI 0.22, 0.50), with an I2 value of 99% (95% CI 98%, 99%), indicating substantial statistical heterogeneity. CONCLUSION: This review demonstrated that the evidence base currently does not support a clear single point estimate of the pooled effect of feedback to EMS staff as a single intervention type due to study heterogeneity. Further research is needed to provide guidance and frameworks supporting better design and evaluation of feedback interventions within EMS. PROSPERO REGISTRATION NUMBER: CRD42020162600.


Assuntos
Ambulâncias , Serviços Médicos de Emergência , Humanos , Retroalimentação , Atenção à Saúde
10.
Br Paramed J ; 7(1): 1-2, 2022 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-36452028
11.
Br Paramed J ; 7(2): 43-49, 2022 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-36448000

RESUMO

This article introduces the reader to the concepts of identity, positionality and reflexivity and outlines their relevance to research paramedics. We outline how a researcher's identity and positionality can influence all aspects of research, including the research question, study design, data collection and data analysis. We discuss that the 'insider' position of paramedics conducting research with other paramedics or within their specific clinical setting has considerable benefits to participant access, understanding of data and dissemination, while highlighting the difficulties of role duality and power dynamics. While positionality is concerned with the researcher clearly stating their assumptions relating to the research topic, the research design, context and process, as well as the research participants; reflexivity involves the researcher questioning their assumptions and finding strategies to address these. The researcher must reflect upon the way the research is carried out and explain to the reader how they moved through the research processes to reach certain conclusions, with the aim of producing a trustworthy and honest account of the research. Throughout this article, we provide examples of how these concepts have been considered and applied by a research paramedic while conducting their PhD research studies within a pre-hospital setting, to illustrate how they can be applied practically.

12.
BMC Health Serv Res ; 22(1): 296, 2022 Mar 03.
Artigo em Inglês | MEDLINE | ID: mdl-35241068

RESUMO

BACKGROUND: Several international studies suggest that the feedback that emergency ambulance service (EMS) personnel receive on the care they have delivered lacks structure, relevance, credibility and routine implementation. Feedback in this context can relate to performance or patient outcomes, can come from a variety of sources and can be sought or imposed. Evidence from health services research and implementation science, suggests that feedback can change professional behavior, improve clinical outcomes and positively influence staff mental health. The current study aimed to explore the experience of EMS professionals regarding current feedback provision and their views on how feedback impacts on patient care, patient safety and staff wellbeing. METHODS: This qualitative study was conducted as part of a wider study of work-related wellbeing in EMS professionals. We used purposive sampling to select 24 frontline EMS professionals from one ambulance service in the United Kingdom and conducted semi-structured interviews. The data was analyzed in iterative cycles of inductive and deductive reasoning using Abductive Thematic Network Analysis. The analysis was informed by psychological theory, as well as models from the wider feedback effectiveness and feedback-seeking behavior literature. RESULTS: Participants viewed current feedback provision as inadequate and consistently expressed a desire for increased feedback. Reported types of prehospital feedback included patient outcome feedback, patient-experience feedback, peer-to-peer feedback, performance feedback, feedforward: on-scene advice, debriefing and investigations and coroners' reports. Participants raised concerns that inadequate feedback could negatively impact on patient safety by preventing learning from mistakes. Enhancing feedback provision was thought to improve patient care and staff wellbeing by supporting personal and professional development. CONCLUSIONS: In line with previous research in this area, this study highlights EMS professionals' strong desire for feedback. The study advances the literature by suggesting a typology of prehospital feedback and presenting a unique insight into the motives for feedback-seeking using psychological theory. A logic model for prehospital feedback interventions was developed to inform future research and development into prehospital feedback.


Assuntos
Ambulâncias , Serviços Médicos de Emergência , Retroalimentação , Serviços Médicos de Emergência/normas , Humanos , Motivação , Avaliação de Resultados da Assistência ao Paciente , Pesquisa Qualitativa , Qualidade da Assistência à Saúde
13.
Microorganisms ; 10(3)2022 Mar 18.
Artigo em Inglês | MEDLINE | ID: mdl-35336231

RESUMO

Three phylogenetically and phenotypically distinct CO-oxidizing thermophiles (Alicyclobacillus macrosporangiidus CPP55 (Firmicutes), Meiothermus ruber PS4 (Deinococcus-Thermus) and Thermogemmatispora carboxidovorans PM5T (Chloroflexi)) and one CO-oxidizing mesophile (Paraburkholderia paradisi WAT (Betaproteobacteria)) isolated from volcanic soils were used to assess growth responses and CO uptake rates during incubations with constant temperatures (25 °C and 55 °C) and during multi-day incubations with a temperature regime that cycled between 20 °C and 55 °C on a diurnal basis (alternating mesophilic and thermophilic temperatures, AMTT). The results were used to test a conjecture that some thermophiles can survive in mesothermal habitats that experience occasional thermophilic temperatures. Meiothermus ruber PS4, which does not form spores, was able to grow and oxidize CO under all conditions, while the spore-forming Alicyclobacillus macrosporangiidus CPP55 grew and oxidized CO during the AMTT regime and at 55 °C, but was not active at 25 °C. Thermogemmatispora carboxidovorans PM5T, also a spore former, only grew at 55 °C but oxidized CO during AMTT and 55 °C incubations. In contrast, the non-sporing mesophile, Paraburkholderia paradisi WAT, was only able to grow and oxidize CO at 25 °C; growth and CO uptake ceased during the AMTT incubations after exposure to the initial round of thermophilic temperatures. Collectively, these results suggest that temporary, periodic exposure to permissive growth temperatures could help maintain populations of thermophiles in mesothermal habitats after deposition from the atmosphere or other sources.

15.
Br Paramed J ; 5(4): 68-69, 2021 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-34421383

RESUMO

AIMS: The phenomenon of feedback is well-researched within the wider healthcare context, where it is suggested that feedback can improve patient care and patient safety by enhancing clinical performance and staff mental health (Ivers et al., 2012). Within a pre-hospital context, systematic reviews have been conducted for automated feedback from defibrillators and debrief after simulation, but not on the wider concept of feedback. The aim of this systematic review was to identify, describe and synthesise the published literature on the types and effects of feedback received by emergency ambulance staff. METHODS: This study is a systematic mixed studies review including empirical primary research of qualitative, quantitative and mixed-methods methodology published in peer-reviewed journals in English. Studies were included if they explored the concept of feedback as defined in this review, i.e. the systematised provision of information to emergency ambulance staff regarding their performance within pre-hospital practice and/or patient outcomes. The search strategy consisted of three facets: ambulance staff synonyms, feedback synonyms and feedback content. Databases searched on 11 June 2020 from inception were MEDLINE, EMBASE, AMED, PsycInfo, HMIC, CINAHL and Web of Science. Study quality was appraised using the Mixed Methods Appraisal Tool (Hong et al., 2018), and data were analysed using narrative synthesis guided by Popay et al. (2006) following a parallel-results convergent synthesis design. RESULTS: The search strategy yielded 2424 articles, excluding duplicates. Seventy-eight studies met the inclusion criteria after full-text review, of which 37 only mentioned feedback as a solution to improving specific circumstances (e.g. decision-making, burnout). The remaining 41 studies consisted of: 34 interventional pre-hospital feedback studies; four non-interventional feedback studies; and three preparatory studies. The source, content and mode of pre-hospital feedback represented in the studies varied greatly and encompassed feedback on behaviour and/or feedback on outcomes of behaviour (Michie et al., 2013). The main outcome measure of included studies was quality of care (e.g. quality of CPR, adherence to guidelines) but softer measures such as staff wellbeing, professional development and clinical decision-making were also represented. CONCLUSION: It is anticipated that the review findings will be useful to guide the development of future pre-hospital feedback interventions, for which there is growing interest in the national and international pre-hospital setting. Further empirical research is required to explore whether the published literature reflects current pre-hospital practice.

16.
Am J Emerg Med ; 38(7): 1424-1430, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-31864872

RESUMO

OBJECTIVE: We aimed to identify predictors of effective management of acute pain in children in the pre-hospital setting. METHODS: A retrospective cross-sectional study using electronic clinical records from one large UK ambulance service during 01-Oct-2017 to 30-Sep-2018 was performed using multivariable logistic regression. We included all children <18 years suffering acute pain. Children with a Glasgow Coma Scale score of <15, no documented pain or without a second pain score were excluded. The outcome measure was effective pain management (abolition or reduction of pain by ≥2 out of 10 using the numeric pain rating scale, Wong-Baker FACES® scale or FLACC [face, legs, activity, crying and consolability] scale). RESULTS: 2312 patients were included for analysis. Median (IQR) age was 13 (9-16), 54% were male and the cause of pain was trauma in 66% of cases. Predictors of effective pain management include children who were younger (0-5 years) compared to older (12-17 years) (adjusted odds ratio [AOR] 1.53; 95% confidence interval [CI] 1.18-1.97), administered analgesia (AOR 2.26; CI 1.87-2.73), attended by a paramedic (AOR 1.46; CI 1.19-1.79) or living in an area of low deprivation (index of multiple deprivation [IMD] 8-10) compared to children in an area of high deprivation (IMD 1-3) (AOR 1.37; CI 1.04-1.80). Child sex, type of pain, transport time, non-pharmacological treatments and clinician experience were not significant. CONCLUSION: These predictors highlight disparity in effective pre-hospital management of acute pain in children. Qualitative research is needed to help explain these findings.


Assuntos
Serviços Médicos de Emergência , Manejo da Dor , Medição da Dor , Dor Aguda/epidemiologia , Adolescente , Ambulâncias , Analgésicos/uso terapêutico , Bandagens , Criança , Pré-Escolar , Estudos Transversais , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Estudos Retrospectivos , Fatores Socioeconômicos , Contenções , Reino Unido/epidemiologia
17.
Case Rep Nephrol ; 2019: 4890287, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30863650

RESUMO

Acute hyperuricemia most commonly occurs in patients who experience tumor lysis syndrome. Hyperuricemia along with other electrolyte abnormalities like hyperkalemia, hypocalcemia, and hyperphosphatemia leads to acute kidney injury (AKI) due to acute uric acid nephropathy which is associated with significant morbidity. High risk patients are thus closely monitored for signs of these laboratory abnormalities. Extreme exercise, rhabdomyolysis, and seizures are rare causes of acute hyperuricemia. Serum uric acid level is not routinely monitored as a part of postictal labs. We report an unusual case of AKI in a young male with recurrent seizures and no associated rhabdomyolysis who was found to have acute uric acid nephropathy. Timely administration of Rasburicase prevented the need for dialysis in this patient and led to complete renal recovery. This case illustrates the importance of doing a urine microscopy and checking uric acid level in patients with recurrent seizures who develop unexplainable AKI, as timely management helps improve outcome. We also briefly review the pathophysiology of seizure related hyperuricemia and acute uric acid nephropathy.

18.
Br Paramed J ; 4(3): 58-59, 2019 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-33447156

RESUMO

INTRODUCTION: Pre-hospital pain management in children is poor, with very few children in pain receiving analgesia. Without effective pain treatment, children may suffer long-term changes in stress hormone responses and pain perception and are at risk of developing posttraumatic stress disorder. We aimed to identify predictors of effective management of acute pain in children in the pre-hospital setting. METHODS: A retrospective cross-sectional study using electronic clinical records from one large UK ambulance service between 1 October 2017 and 30 September 2018 was performed using multi-variable logistic regression. We included all children < 18 years suffering acute pain. Children with a Glasgow Coma Scale of < 15, no documented pain or without a second pain score were excluded. The outcome measure was effective pain management (abolition or reduction of pain by ≥ 2 out of 10 using the numeric pain rating scale, Wong and Baker FACES® scale or Face, Legs, Activity, Crying and Consolability (FLACC) scale). RESULTS: A total of 2312 patients were included for analysis. Median (IQR) age was 13 (9-16), 54% were male and the cause of pain was trauma in 66% of cases. Predictors of effective pain management include children who were younger (0-5 years) compared to older (12-17 years) (adjusted odds ratio (AOR) 1.57; 95% confidence interval (CI) 1.21-2.03), administered analgesia (AOR 2.35; CI 1.94-2.84), attended by a paramedic (AOR 1.39; CI 1.13-1.70) or living in an area of medium deprivation (index of multiple deprivation (IMD) 4-7) compared to children in an area of high deprivation (IMD 1-3) (AOR 1.41; CI 1.10-1.79). Child gender, type of pain, transport time and clinician experience were not significant. CONCLUSION: These predictors highlight disparity in effective pre-hospital management of acute pain in children. Qualitative research is needed to help explain these findings.

19.
Emerg Med J ; 35(12): 757-764, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-30217952

RESUMO

INTRODUCTION: Paramedics are involved in examining, treating and diagnosing patients. The accuracy of these diagnoses is evaluated using diagnostic accuracy studies. We undertook a systematic review of published literature to provide an overview of how accurately paramedics diagnose patients compared with hospital doctors. A bivariate meta-analysis was incorporated to examine the range of diagnostic sensitivity and specificity. METHODS: We searched MEDLINE, CINAHL, Embase, AMED and the Cochrane Database from 1946 to 7 May 2016 for studies where patients had been given a diagnosis by paramedics and hospital doctors. Keywords focused on study type ('diagnostic accuracy'), outcomes (sensitivity, specificity, likelihood ratio?, predictive value?) and setting (paramedic*, pre-hospital, ambulance, 'emergency service?', 'emergency medical service?', 'emergency technician?'). RESULTS: 2941 references were screened by title and/or abstract. Eleven studies encompassing 384 985 patients were included after full-text review. The types of diagnoses in one of the studies encompassed all possible diagnoses and in the other studies focused on sepsis, stroke and myocardial infarction. Sensitivity estimates ranged from 32% to 100% and specificity estimates from 14% to 100%. Eight of the studies were deemed to have a low risk of bias and were incorporated into a meta-analysis which showed a pooled sensitivity of 0.74 (0.62 to 0.82) and a pooled specificity of 0.94 (0.87 to 0.97). DISCUSSION: Current published research suggests that diagnoses made by paramedics have high sensitivity and even higher specificity. However, the paucity and varying quality of studies indicates that further prehospital diagnostic accuracy studies are warranted especially in the field of non-life-threatening conditions. PROSPERO REGISTRATION NUMBER: CRD42016039306.


Assuntos
Técnicas e Procedimentos Diagnósticos/normas , Serviços Médicos de Emergência/métodos , Serviços Médicos de Emergência/normas , Humanos , Sensibilidade e Especificidade
20.
Biomacromolecules ; 12(10): 3621-8, 2011 Oct 10.
Artigo em Inglês | MEDLINE | ID: mdl-21861465

RESUMO

Polymerization of high internal phase emulsions (polyHIPEs) is a relatively new method for the production of high-porosity scaffolds. The tunable architecture of these polyHIPE foams makes them attractive candidates for tissue engineered bone grafts. Previously studied polyHIPE systems require either toxic diluents or high cure temperatures which prohibit their use as an injectable bone graft. In contrast, we have developed an injectable polyHIPE that cures at physiological temperatures to a rigid, high-porosity foam. First, a biodegradable macromer, propylene fumarate dimethacrylate (PFDMA), was synthesized that has appropriate viscosity and hydrophobicity for emulsification. The process of surfactant selection is detailed with particular focus on the key structural features of both polymer (logP values, hydrogen bond acceptor sites) and surfactant (HLB values, hydrogen bond donor sites) that enable stable HIPE formation. Incubation of HIPEs at 37 °C was used to initiate radical cross-linking of the unsaturated double bond of the methacrylate groups to polymerize the continuous phase and lock in the emulsion geometry. The resulting polyHIPEs exhibited ~75% porosity, pore sizes ranging from 4 to 29 µm, and an average compressive modulus and strength of 33 and 5 MPa, respectively. These findings highlight the great potential of these scaffolds as injectable, tissue engineered bone grafts.


Assuntos
Materiais Biocompatíveis/síntese química , Osso e Ossos/química , Injeções/métodos , Polímeros/síntese química , Estirenos/síntese química , Engenharia Tecidual/métodos , Células 3T3 , Animais , Materiais Biocompatíveis/farmacologia , Osso e Ossos/metabolismo , Sobrevivência Celular/efeitos dos fármacos , Emulsões , Fibroblastos/citologia , Fibroblastos/efeitos dos fármacos , Fumaratos/química , Humanos , Ligação de Hidrogênio , Interações Hidrofóbicas e Hidrofílicas , Teste de Materiais , Metacrilatos/química , Camundongos , Polímeros/farmacologia , Polipropilenos/química , Porosidade , Estirenos/farmacologia , Alicerces Teciduais , Viscosidade
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