Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 94
Filtrar
Mais filtros

Base de dados
Tipo de documento
Intervalo de ano de publicação
1.
Global Health ; 20(1): 15, 2024 Feb 21.
Artigo em Inglês | MEDLINE | ID: mdl-38383465

RESUMO

BACKGROUND: With the increasing threat of hazardous events at local, national, and global levels, an effective workforce for health emergency and disaster risk management (Health EDRM) in local, national, and international communities is urgently needed. However, there are no universally accepted competencies and curricula for Health EDRM. This study aimed to identify Health EDRM competencies and curricula worldwide using literature reviews and a cross-sectional survey. METHODS: Literature reviews in English and Japanese languages were performed. We searched MEDLINE, EMBASE, CINAHL (English), and the ICHUSHI (Japanese) databases for journal articles published between 1990 and 2020. Subsequently, a cross-sectional survey was sent to WHO Health EDRM Research Network members and other recommended experts in October 2021 to identify competency models and curricula not specified in the literature search. RESULTS: Nineteen studies from the searches were found to be relevant to Health EDRM competencies and curricula. Most of the competency models and curricula were from the US. The domains included knowledge and skills, emergency response systems (including incident management principles), communications, critical thinking, ethical and legal aspects, and managerial and leadership skills. The cross-sectional survey received 65 responses with an estimated response rate of 25%. Twenty-one competency models and 20 curricula for managers and frontline personnel were analyzed; managers' decision-making and leadership skills were considered essential. CONCLUSION: An increased focus on decision-making and leadership skills should be included in Health EDRM competencies and curricula to strengthen the health workforce.


Assuntos
Planejamento em Desastres , Desastres , Humanos , Estudos Transversais , Currículo , Gestão de Riscos
2.
Am J Emerg Med ; 86: 30-36, 2024 Sep 19.
Artigo em Inglês | MEDLINE | ID: mdl-39316872

RESUMO

BACKGROUND: With the development of regionalised trauma networks, interhospital transfer of trauma patients is an inevitable component of the trauma system. However, unnecessary transfer is a common phenomenon, and it is not without risk and cost. A better understanding of secondary overtriage would enable emergency physicians to make better decisions about trauma transfers and allow guidelines to be developed to support this decision making. This study aimed to describe the pattern of secondary overtriage in Hong Kong and identify its associated factors. METHODS: This was a retrospective review of 10-years of prospectively collected multi-center data from two trauma registries in the New Territories of Hong Kong (2013-2022). The primary outcome is secondary overtriage, which was defined as early discharge alive within 48 h, Injury Severity Score (ISS) <15, and no surgical operation done. Patient characteristics, physiology, anatomy and investigation variables were compared against secondary overtriage using univariate and multivariable analyses. RESULTS: During the study period, 3852 patients underwent interhospital transfer from a non-trauma center to a trauma center, and 809 (21 %) of the transfers were considered secondary overtriage. The secondary overtriage rate was higher in pediatric age groups at 34.8 % (97/279). Logistic regression analysis showed secondary overtriage to be associated with blunt trauma and an Abbreviated Injury Scale (AIS) score of <3 for head or neck, thorax, abdomen and extremities. CONCLUSION: Interhospital transfer is an essential component of the trauma system. However, over one-fifth of the transfers were considered unnecessary in Hong Kong, and this could be considered to be an inefficient use of resources as well as cause inconvenience to patients and their families. We have identified related factors including blunt trauma, AIS <3 scores for head or neck, thorax, abdomen and extremities, and opportunities to establish and improve on transfer protocols. Further research should be aimed to safely reduce interhospital transfers in the future to improve the efficiency of the Hong Kong trauma system.

3.
Postgrad Med J ; 100(1188): 741-750, 2024 Sep 22.
Artigo em Inglês | MEDLINE | ID: mdl-38679808

RESUMO

BACKGROUND: Low back pain (LBP) is a leading cause of disability worldwide and has posed numerous health and socioeconomic challenges. This study compared whether nonsteroidal anti-inflammatory drugs (NSAIDs) in combination with tramadol, tizanidine or placebo would be the best treatment regime to improve the Roland Morris Disability Questionnaire (RMDQ) scores at 1 week. METHODS: This was a multi-center, double-blind, randomized, and placebo-controlled trial including adult patients with acute LBP and sciatica in three emergency departments in Hong Kong. Patients were randomized to the receive tramadol 50 mg, tizanidine 2 mg, or placebo every 6 hours for 2 weeks in a 1:1:1 ratio. The RMDQ and other secondary outcomes were measured at baseline, Day 2, 7, 14, 21, and 28. Data were analyzed on an intention to treat basis. Crude and adjusted mean differences in the changes of RMDQ and NRS scores from baseline to Day 7 between tizanidine/tramadol and placebo were determined with 95% confidence intervals. RESULTS: Two hundred and ninety-one patients were analyzed with the mean age of 47.4 years and 57.7% were male. The primary outcome of mean difference in RMDQs on Day 7 (compared with baseline) was non-significant for tizanidine compared with placebo (adjusted mean difference - 0.56, 95% CI -2.48 to 1.37) and tramadol compared with placebo (adjusted mean difference - 0.85, 95% CI -2.80 to 1.10). Only 23.7% were fully compliant to the treatment allocated. Complier Average Causal Effect analysis also showed no difference in the primary outcome for the tizanidine and tramadol versus placebo. CONCLUSION: Among patients with acute LBP and sciatica presenting to the ED, adding tramadol or tizanidine to diclofenac did not improve functional recovery.


Assuntos
Anti-Inflamatórios não Esteroides , Clonidina , Diclofenaco , Dor Lombar , Medição da Dor , Ciática , Tramadol , Humanos , Clonidina/análogos & derivados , Clonidina/uso terapêutico , Tramadol/uso terapêutico , Masculino , Dor Lombar/tratamento farmacológico , Feminino , Ciática/tratamento farmacológico , Método Duplo-Cego , Anti-Inflamatórios não Esteroides/uso terapêutico , Pessoa de Meia-Idade , Resultado do Tratamento , Adulto , Diclofenaco/uso terapêutico , Diclofenaco/análogos & derivados , Diclofenaco/administração & dosagem , Analgésicos Opioides/uso terapêutico , Quimioterapia Combinada , Hong Kong , Idoso
4.
BMC Public Health ; 23(1): 618, 2023 03 31.
Artigo em Inglês | MEDLINE | ID: mdl-37004041

RESUMO

BACKGROUND: In addition to high vaccination levels, COVID-19 control requires uptake and continued adherence to personal hygiene and social distancing behaviors. It is unclear whether residents of a city with successive experience in worldwide pandemics such as SARS, would quickly adopt and maintain preventive behaviors. METHODS: A population-based, longitudinal telephone survey was conducted between in first local wave of the COVID-19 pandemic (April 2020) and third local wave (December 2020) (n = 403). The study examined factors associated with personal hygiene and social distancing behavior fatigue, as measured by reduced adherence. RESULTS: Over 9 months, face mask use increased (96.5-100%, p < 0.001). Although habitual hand hygiene remained unchanged (92.0%), blue collar workers and non-working individuals showed higher risk of hand hygiene fatigue. There was a decline (p < 0.05) in avoidance of social gatherings (81.1 to 70.7%), avoidance of public places (52.9-27.5%) and avoidance of international travel (81.9-77.4%) even with rising caseloads. Lowered perception of COVID-19 disease severity was associated with decreased avoidance of social gatherings and public places while lower education was associated with decline in avoidance of social gatherings. CONCLUSION: Even in regions with past pandemic experience, maintaining social distancing behaviors during a protracted pandemic remains a major public health challenge.


Assuntos
COVID-19 , Humanos , COVID-19/epidemiologia , COVID-19/prevenção & controle , Pandemias/prevenção & controle , Hong Kong/epidemiologia , SARS-CoV-2 , Estudos Longitudinais
5.
Sensors (Basel) ; 23(10)2023 May 18.
Artigo em Inglês | MEDLINE | ID: mdl-37430795

RESUMO

Functional objects are large and small physical entities installed in urban environments to offer specific functionalities to visitors, such as shops, escalators, and information kiosks. Instances of the novel notion are focal points of human activities and are significant in pedestrian movement. Pedestrian trajectory modelling in an urban scene is a challenging problem because of the complex patterns resulting from social interactions of the crowds and the diverse relation between pedestrians and functional objects. Many data-driven methods have been proposed to explain the complex movements in urban scenes. However, the methods considering functional objects in their formulation are rare. This study aims to reduce the knowledge gap by demonstrating the importance of pedestrian-object relations in the modelling task. The proposed modelling method, called pedestrian-object relation guided trajectory prediction (PORTP), uses a dual-layer architecture that includes a predictor of pedestrian-object relation and a series of relation-specific specialized pedestrian trajectory prediction models. The experiment findings indicate that the inclusion of pedestrian-object relation results in more accurate predictions. This study provides an empirical foundation for the novel notion and a strong baseline for future work on this topic.

6.
Am J Emerg Med ; 60: 73-77, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35908299

RESUMO

BACKGROUND: A key component of trauma system evaluation is the Injury Severity Score (ISS). The ISS is dependent on the AIS, and as AIS versions are updated this effects the number of patients within a health system which are considered severely injured (ISS >15). This study aims to analyse the changes comparing AIS1998 and AIS2015, and its impact on injury severity scoring and survival prediction model in a major trauma centre. METHODS: This retrospective study reviewed all blunt trauma admissions from 1 January 2020 to 31 December 2020 from the trauma registry of Prince of Wales Hospital, Hong Kong. Patients were manually double coded with AIS1998 and AIS2015 by the same experienced trauma nurse who have completed both AIS 1998 and AIS 2015 Courses. AIS patterns and Injury Severity Scores (ISS) derived from AIS 1998 and 2015 were compared using the Wilcoxon Signed Rank Test. The area under the receiving operator curve (AUROC) was compared based on the Trauma and Injury Severity Score (TRISS) model using AIS 1998 and AIS 2015. RESULTS: 739 patients were included. There were 34 deaths within 30 days (30-day mortality rate 4.6%). Patients coded with AIS2015 compared with AIS1998 had significant reductions in the classification of serious, severe and critical categories of AIS, with a substantial increase in the mild and moderate categories. The largest reduction was observed in the head and neck region (Z = -11.018, p < 0.001), followed by the chest (Z = -6.110, p < 0.001), abdomen (Z = -4.221, p < 0.001) and extremity regions (Z = -4.252, p < 0.001). There was a 27% reduction in number of cases with ISS >15 in AIS2015 compared with AIS1998. Rates of 30-day mortality, ICU admission, emergency operation and trauma team activation of ISS > 15 using AIS 1998 were similar to the cut off for New Injury Severity Score (NISS) >12 using AIS 2015. The AUROC from the TRISS (AIS2015) was 0.942, and not different from the AUROC for TRISS (AIS1998) of 0.936. The sensitivity and specificity were 93.9% and 82.1% for TRISS (AIS2015), and 93.9% and 76.0% for TRISS (AIS1998). CONCLUSION: Trauma centres should be aware of the impact of the AIS2015 update on the benchmarking of trauma care, and consider the need for updating the ISS cut off for major trauma definitions.


Assuntos
Centros de Traumatologia , Ferimentos e Lesões , Escala Resumida de Ferimentos , Humanos , Escala de Gravidade do Ferimento , Sistema de Registros , Estudos Retrospectivos , Índices de Gravidade do Trauma
7.
Circulation ; 142(16_suppl_1): S41-S91, 2020 10 20.
Artigo em Inglês | MEDLINE | ID: mdl-33084391

RESUMO

This 2020 International Consensus on Cardiopulmonary Resuscitation (CPR) and Emergency Cardiovascular Care Science With Treatment Recommendations on basic life support summarizes evidence evaluations performed for 22 topics that were prioritized by the Basic Life Support Task Force of the International Liaison Committee on Resuscitation. The evidence reviews include 16 systematic reviews, 5 scoping reviews, and 1 evidence update. Per agreement within the International Liaison Committee on Resuscitation, new or revised treatment recommendations were only made after a systematic review. Systematic reviews were performed for the following topics: dispatch diagnosis of cardiac arrest, use of a firm surface for CPR, sequence for starting CPR (compressions-airway-breaths versus airway-breaths-compressions), CPR before calling for help, duration of CPR cycles, hand position during compressions, rhythm check timing, feedback for CPR quality, alternative techniques, public access automated external defibrillator programs, analysis of rhythm during chest compressions, CPR before defibrillation, removal of foreign-body airway obstruction, resuscitation care for suspected opioid-associated emergencies, drowning, and harm from CPR to victims not in cardiac arrest. The topics that resulted in the most extensive task force discussions included CPR during transport, CPR before calling for help, resuscitation care for suspected opioid-associated emergencies, feedback for CPR quality, and analysis of rhythm during chest compressions. After discussion of the scoping reviews and the evidence update, the task force prioritized several topics for new systematic reviews.


Assuntos
Reanimação Cardiopulmonar/normas , Doenças Cardiovasculares/terapia , Serviços Médicos de Emergência/normas , Cuidados para Prolongar a Vida/normas , Adulto , Reanimação Cardiopulmonar/métodos , Doenças Cardiovasculares/diagnóstico , Desfibriladores , Prática Clínica Baseada em Evidências , Humanos , Parada Cardíaca Extra-Hospitalar/diagnóstico , Parada Cardíaca Extra-Hospitalar/terapia
8.
Am J Emerg Med ; 46: 10-15, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-33690070

RESUMO

BACKGROUND: The coronavirus disease 2019 (COVID-19) pandemic has been enormously disruptive and harmful to people around the world, but its impact on other illnesses and injuries has been more variable. To evaluate the ramification of infectious disease outbreaks on major traumatic injuries, we compared changes in the incidence of major trauma cases during the 2003 Severe Acute Respiratory Syndrome (SARS) period with COVID-19 in 2020. METHODS: Data were analyzed from the trauma registry of a major, tertiary-care teaching hospital in Hong Kong. Patients presenting with major traumatic injuries during the first six months of 2001-03 and 2018-20 were retrieved for analysis. Patient characteristics, injury mechanism, admitting service, and emergency department (ED)/hospital lengths of stay (LOS) were recorded. Raw and adjusted survival rates (using the modified Trauma Injury Severity Score (TRISS)) were recorded. RESULTS: The number of trauma cases fell dramatically during 2003 and 2020 compared with previous years. In both 2003 and 2020, the number of trauma registry patients fell by 49% in April (compared to the preceding reference years of 2001/02 and 2018/19, respectively). Patient characteristics, treatments, and outcomes were also different during the outbreak years. Comparing 2003 to 2020 relative to their respective reference baselines, the percentages of injuries that happened at home, patients without co-morbidities, and patients' mean age all increased in 2003 but decreased in 2020. Work-place injuries drastically dropped in 2003, but not in 2020. Average ED LOS dropped in 2003 by 36.4 min (95% CI 12.5, 60.3) but declined by only 14.5 min (95% CI -2.9, 32.1) in 2020. Both observed and expected 30-day mortality declined in 2020 vs. 2003 (observed 4.5% vs. 11.7%, p = 0.001, OR 0.352, 95% CI 0.187, 0.661) (expected 4.5% vs 11.6%, p = 0.002, OR 0.358, 95% CI 0.188, 0.684). CONCLUSION: Major trauma cases dropped by half during both the peak of the 2003 SARS and 2020 COVID-19 pandemics in Hong Kong, suggesting a trend for future pandemic planning. If similar findings are seen at other trauma centers, proactive personnel and resource allocations away from trauma towards medical emergency systems may be more appropriate for future pandemics.


Assuntos
COVID-19/epidemiologia , Hospitalização/tendências , Pandemias , Sistema de Registros , Ferimentos e Lesões/epidemiologia , Adulto , Comorbidade , Feminino , Seguimentos , Hong Kong/epidemiologia , Humanos , Masculino , Estudos Retrospectivos , SARS-CoV-2 , Centros de Traumatologia , Adulto Jovem
9.
BMC Public Health ; 21(1): 602, 2021 03 27.
Artigo em Inglês | MEDLINE | ID: mdl-33773593

RESUMO

BACKGROUND: There is growing evidence that a range of pre-injury, injury related and post-injury factors influence social and health outcomes across the injury severity spectrum. This paper documents health related outcomes for people with mild, moderate and severe injury after motor vehicle crash (MVC) injuries in New South Wales, Australia. METHODS: This inception cohort study followed 2019 people injured in MVCs, for 6 and 12 months post-injury. We categorised moderate injury as hospital length-of-stay (LOS) of 2-6 days and Injury Severity Score (ISS) of 4-11, while severe injury as LOS ≥7 days or ISS ≥ 12. We examined differences in paid work status, 12-Item Short Form Survey (SF12), EQ-5D and World Health Organisation Disability Assessment Schedule II (WHODAS) outcomes longitudinally from baseline to 12 months between levels of injury severity using linear mixed models for repeated measures. We first considered minimally sufficient adjustment factors (age, sex, crash role, perceived danger in crash, pre-injury health, pre-injury EQ-5D, recruitment source), and then more extensive adjustments including post-injury factors. The presence of mediating pathways for SF-12 Physical Component Summary (PCS) and Mental Component Summary (MCS) via post-injury factors was evaluated. RESULTS: Based on hospital length of stay (LOS), 25 and 10% of participants sustained moderate and severe injuries, respectively, while 43 and 4% had these injuries based on ISS. Twelve months post-injury LOS ≥7 days versus ≤1 day was associated with an estimated 9 units lower mean SF12 PCS using a minimally sufficient adjustment model, and LOS ≥ 7 days was associated with a 3 units lower mean SF12 MCS score. Mediation analyses (LOS ≥ 7 days vs ≤1 day) found for SF12 MCS outcomes, effects of injury severity were small and mostly indirect (direct effect - 0.03, indirect effect - 0.22). Whereas for SF12 PCS outcomes the effect of having a more severe injury rather than mild were both direct and indirect (direct effect - 0.50, indirect effect - 0.38). CONCLUSIONS: Individuals with severe injuries (those with LOS ≥ 7 days and ISS 12+) had poorer recovery 12 months after the injury. In addition, post-injury mediators have an important role in influencing long-term health outcomes. TRIAL REGISTRATION: Australia New Zealand Clinical trial registry identification number - ACTRN12613000889752 .


Assuntos
Acidentes de Trânsito , Ferimentos e Lesões , Austrália/epidemiologia , Estudos de Coortes , Humanos , Escala de Gravidade do Ferimento , Veículos Automotores , New South Wales/epidemiologia , Qualidade de Vida , Ferimentos e Lesões/epidemiologia
10.
Health Promot Int ; 36(4): 1178-1185, 2021 Aug 30.
Artigo em Inglês | MEDLINE | ID: mdl-33294917

RESUMO

Identified in December 2019 in China, the coronavirus 2019 (COVID-19) has been declared a Public Health Emergency of International Concern (PHEIC). Pandemics share features that increase fear. While some fear can stimulate preventive health behaviors, extreme fear can lead to adverse psychological and behavioral response. The media play a major role shaping these responses. When dealing with a PHEIC, the authorities' communication strategies are embedded in a multilevel governance and a highly hierarchal system, which adds another layer of complexity. Carrying out more 'real-world research' is crucial to generate evidence relating to the psychosocial and behavioral aspects involved during the COVID-19 pandemic and how it is shaped by authorities and media discourses. Interdisciplinary research and international collaborations could contribute to improve our understanding and management of risk information. Emerging from a socio-ecological perspective, future research must integrate multilevel analytical elements, to ensure triangulation of evidence and co-constructing robust recommendations. A mixed-method approach should be privileged to address these issues. At the micro-level, a population-based survey could be conducted in various jurisdictions to assess and compare psychosocial issues according to sociocultural groups. Then, a quantitative/qualitative discourse analysis of the media could be performed. Finally, a network analysis could allow assessing how official information flows and circulates across levels of governance. The COVID-19 represents an opportunity to evaluate the impacts of information/communication strategy and misinformation on various cultural and socioeconomic groups, providing important lessons that could be applied to future health emergencies and disasters.


Assuntos
COVID-19 , Comunicação , Mídias Sociais , Medo , Humanos , Pandemias , SARS-CoV-2
11.
Br Med Bull ; 136(1): 46-87, 2020 12 15.
Artigo em Inglês | MEDLINE | ID: mdl-33030513

RESUMO

INTRODUCTION: Non-pharmaceutical measures to facilitate a response to the COVID-19 pandemic, a disease caused by novel coronavirus SARS-CoV-2, are urgently needed. Using the World Health Organization (WHO) health emergency and disaster risk management (health-EDRM) framework, behavioural measures for droplet-borne communicable diseases and their enabling and limiting factors at various implementation levels were evaluated. SOURCES OF DATA: Keyword search was conducted in PubMed, Google Scholar, Embase, Medline, Science Direct, WHO and CDC online publication databases. Using the Oxford Centre for Evidence-Based Medicine review criteria, 10 bottom-up, non-pharmaceutical prevention measures from 104 English-language articles, which published between January 2000 and May 2020, were identified and examined. AREAS OF AGREEMENT: Evidence-guided behavioural measures against transmission of COVID-19 in global at-risk communities were identified, including regular handwashing, wearing face masks and avoiding crowds and gatherings. AREAS OF CONCERN: Strong evidence-based systematic behavioural studies for COVID-19 prevention are lacking. GROWING POINTS: Very limited research publications are available for non-pharmaceutical measures to facilitate pandemic response. AREAS TIMELY FOR RESEARCH: Research with strong implementation feasibility that targets resource-poor settings with low baseline health-EDRM capacity is urgently needed.


Assuntos
COVID-19 , Transmissão de Doença Infecciosa/prevenção & controle , Promoção da Saúde/métodos , Avaliação de Resultados em Cuidados de Saúde/métodos , Prevenção Primária/métodos , Atitude Frente a Saúde , COVID-19/epidemiologia , COVID-19/prevenção & controle , COVID-19/psicologia , Humanos , Comportamento de Redução do Risco , SARS-CoV-2
12.
J Am Chem Soc ; 141(7): 3083-3099, 2019 02 20.
Artigo em Inglês | MEDLINE | ID: mdl-30698435

RESUMO

The Illicium sesquiterpenes are a family of natural products containing over 100 highly oxidized and structurally complex members, many of which display interesting biological activities. This comprehensive account chronicles the evolution of a semisynthetic strategy toward these molecules from (+)-cedrol, seeking to emulate key aspects of their presumed biosynthesis. An initial route generated lower oxidation state analogs but failed in delivering a crucial hydroxy group in the final step. Insight gathered during these studies, however, ultimately led to a synthesis of the pseudoanisatinoids along with the allo-cedrane natural product 11- O-debenzoyltashironin. A second-generation strategy was then developed to access the more highly oxidized majucinoid compounds including jiadifenolide and majucin itself. Overall, one dozen natural products can be accessed from an abundant and inexpensive terpene feedstock. A multitude of general observations regarding site-selective C(sp3)-H bond functionalization reactions in complex polycyclic architectures are reported.


Assuntos
Sesquiterpenos/síntese química , Biomimética , Oxirredução , Sesquiterpenos Policíclicos/química
14.
Am J Emerg Med ; 37(3): 450-456, 2019 03.
Artigo em Inglês | MEDLINE | ID: mdl-30041911

RESUMO

BACKGROUND: With the aging population, the number of older patients with multiple injuries is increasing. The aim of this study was to understand the patterns and outcomes of older patients admitted to a major trauma centre in Hong Kong from 2006 to 2015, and investigate the performance of the trauma team activation (TTA) criteria for these elderly patients. METHODS: This was a retrospective cohort study from a university hospital major trauma centre in Hong Kong from 2006 to 2015. Patients aged 55 or above who entered the trauma registry were included. Patients were divided into those aged 55-70, and above 70. To test the performance of the TTA criteria, we defined injured patients with severe outcomes as those having any of the following: death within 30 days; the need for surgery; or the need for intensive care unit (ICU) care. RESULTS: 2218 patients were included over the 10 year period. The 30-day mortality was 7.5% for aged 55-70 and 17.7% for those aged above 70. The sensitivity of TTA criteria for identifying severe outcomes for those aged 55 or above was 35.6%, with 91.6% specificity. The under-triage rate was 59% for age 55-70, and 69.1% for those aged above 70. CONCLUSION: There is a need to consider alternative TTA criteria for our geriatric trauma population, and to more clearly define the process and standards of care in Hong Kong.


Assuntos
Centros de Traumatologia , Triagem/normas , Ferimentos e Lesões/mortalidade , Idoso , Idoso de 80 Anos ou mais , Feminino , Hong Kong/epidemiologia , Hospitais Universitários , Humanos , Escala de Gravidade do Ferimento , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Sistema de Registros , Estudos Retrospectivos , Sensibilidade e Especificidade , Triagem/estatística & dados numéricos
15.
Nat Prod Rep ; 35(2): 174-202, 2018 02 21.
Artigo em Inglês | MEDLINE | ID: mdl-29417970

RESUMO

Covering: 2011-2017Radical cyclizations have a rich history in organic chemistry and have been particularly generous to the field of natural product synthesis. Owing to their ability to operate in highly congested molecular quarters, and with significant functional group compatibility, these transformations have enabled the synthesis of numerous polycyclic terpenoid natural products over the past several decades. Moreover, when programmed accordingly into a synthetic plan, radical cascade processes can be used to rapidly assemble molecular complexity, much in the same way nature rapidly constructs terpene frameworks through cationic cyclization pathways. This review highlights recent total syntheses of complex terpenoids (from 2011-2017) employing C-C bond-forming radical cascade sequences.


Assuntos
Produtos Biológicos/síntese química , Terpenos/síntese química , Produtos Biológicos/química , Ciclização , Diterpenos/síntese química , Diterpenos/química , Diterpenos do Tipo Caurano/síntese química , Limoninas/síntese química , Compostos Policíclicos , Sesquiterpenos/síntese química , Terpenos/química , Pleuromutilinas
16.
BMC Cardiovasc Disord ; 18(1): 95, 2018 05 16.
Artigo em Inglês | MEDLINE | ID: mdl-29769019

RESUMO

BACKGROUND: Hong Kong (HK) and Guangzhou (GZ) are cities in China with different healthcare systems. This study aimed to compare 30-day and 6-month mortality and characteristics of patients with suspected cardiac chest pain admitted to two emergency departments (ED) in HK and GZ. METHODS: A prospective observational study enrolled patients with suspected cardiac chest pain presenting to EDs in the Prince of Wales Hospital (PWH), HK and the Second Affiliated Hospital of Guangzhou Medical University (AHGZMU),GZ. The primary outcome was 30-day and 6-month mortality. RESULTS: In total, 996 patients were recruited, 407 cases from GZ and 589 cases from HK.The 30-day and 6-month mortality of chest patients were 3.7% and 4.7% in GZand 0.3% and 1.9% in HK, respectively. Serum creatinine level (Cr) was an independent factor for 30-day mortality whilst Cr and systolic blood pressure (SBP) were independent factors for 6-month mortality. In Cox regression analysis, unadjusted and adjusted hazard ratios for 30-day and 6-month mortality in GZ were significantly increased. CONCLUSION: The 30-day and 6-month mortality of patients with suspected cardiac chest pain in Guangzhou were higher than in Hong Kong due to due to different baseline clinical characteristics of patients and different distributions of diagnoses, which were associated with different healthcare systems. Serum creatinine and SBP were independent factors for 30-day and 6-month mortality.


Assuntos
Angina Pectoris/diagnóstico , Angina Pectoris/mortalidade , Serviço Hospitalar de Cardiologia , Serviço Hospitalar de Emergência , Disparidades nos Níveis de Saúde , Disparidades em Assistência à Saúde , Idoso , Idoso de 80 Anos ou mais , Angina Pectoris/sangue , Angina Pectoris/fisiopatologia , Biomarcadores/sangue , Pressão Sanguínea , Comorbidade , Creatinina/sangue , Feminino , Frequência Cardíaca , Hong Kong/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prognóstico , Estudos Prospectivos , Medição de Risco , Fatores de Risco , Fatores de Tempo
17.
Global Health ; 14(1): 117, 2018 11 27.
Artigo em Inglês | MEDLINE | ID: mdl-30482214

RESUMO

BACKGROUND: The global travel and tourism industry has been rapidly expanding in the past decades. The traditional focus on border screening, and by airline and cruise industries may be inadequate due to the incubation period of an infectious disease. This case study highlights the potential role of the hotel industry in epidemic preparedness and response. METHODS: This case study focuses on the epidemic outbreaks of SARS in 2003 and H1N1 swine flu in 2009 in Hong Kong, and the subsequent guidelines published by the health authority in relation to the hotel industry in Hong Kong which provide the backbone for discussion. RESULTS: The Metropole Hotel hastened the international spread of the 2003 SARS outbreak by the index case infecting visitors from Singapore, Vietnam, Canada as well as local people via close contact with the index case and the environmental contamination. The one-week quarantine of more than 300 guests and staff at the Metropark Hotel during the 2009 H1N1 swine flu exposed gaps in the partnership with the hotel industry. The subsequent guidelines for the hotel industry from the Centre of Health Protection focused largely on the maintenance of hygiene within the hotel premises. CONCLUSION: Positive collaborations may bring about effective preparedness across the health and the tourism sectors for future epidemics. Regular hygiene surveillance at hotel facilities, and developing coordination mechanism for impending epidemics on the use of screening, swift reporting and isolation of infected persons may help mitigate the impact of future events. Preparedness and contingency plans for infectious disease control for the hotel industry requires continuous engagement and dialogue.


Assuntos
Doenças Transmissíveis Emergentes/prevenção & controle , Epidemias/prevenção & controle , Indústrias , Vírus da Influenza A Subtipo H1N1 , Influenza Humana/prevenção & controle , Síndrome Respiratória Aguda Grave/prevenção & controle , Hong Kong/epidemiologia , Humanos , Influenza Humana/epidemiologia , Síndrome Respiratória Aguda Grave/epidemiologia
18.
J Am Chem Soc ; 139(49): 17783-17786, 2017 12 13.
Artigo em Inglês | MEDLINE | ID: mdl-29148748

RESUMO

We report the first chemical syntheses of both (-)-majucin and (-)-jiadifenoxolane A via 10 net oxidations from the ubiquitous terpene (+)-cedrol. Additionally, this approach allows for access to other majucin-type sesquiterpenes, like (-)-jiadifenolide, (-)-jiadifenin, and (-)-(1R,10S)-2-oxo-3,4-dehydroxyneomajucin (ODNM) along the synthetic pathway. Site-selective aliphatic C(sp3)-H bond oxidation reactions serve as the cornerstone of this work which offers access to highly oxidized natural products from an abundant and renewable terpene feedstock.


Assuntos
Illicium/química , Sesquiterpenos/síntese química , Produtos Biológicos/síntese química , Produtos Biológicos/química , Estrutura Molecular , Oxirredução , Sesquiterpenos/química , Terpenos/química
19.
J Am Chem Soc ; 138(51): 16616-16619, 2016 12 28.
Artigo em Inglês | MEDLINE | ID: mdl-27966918

RESUMO

Illicium sesquiterpenes have been the subject of numerous synthetic efforts due to their ornate and highly oxidized structures as well as significant biological activities. Herein we report the first chemical synthesis of (+)-pseudoanisatin from the abundant feedstock chemical cedrol (∼$50 USD/kg) in 12 steps using extensive site-selective C(sp3)-H bond functionalization. Significantly, this work represents a novel oxidative strategic template for future approaches to these natural products and their analogs.


Assuntos
Illicium/química , Lactonas/química , Lactonas/síntese química , Sesquiterpenos/química , Sesquiterpenos/síntese química , Compostos de Espiro/química , Compostos de Espiro/síntese química , Técnicas de Química Sintética , Oxirredução , Estereoisomerismo
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA