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1.
Proc Natl Acad Sci U S A ; 118(4)2021 01 26.
Artigo em Inglês | MEDLINE | ID: mdl-33431650

RESUMO

The science around the use of masks by the public to impede COVID-19 transmission is advancing rapidly. In this narrative review, we develop an analytical framework to examine mask usage, synthesizing the relevant literature to inform multiple areas: population impact, transmission characteristics, source control, wearer protection, sociological considerations, and implementation considerations. A primary route of transmission of COVID-19 is via respiratory particles, and it is known to be transmissible from presymptomatic, paucisymptomatic, and asymptomatic individuals. Reducing disease spread requires two things: limiting contacts of infected individuals via physical distancing and other measures and reducing the transmission probability per contact. The preponderance of evidence indicates that mask wearing reduces transmissibility per contact by reducing transmission of infected respiratory particles in both laboratory and clinical contexts. Public mask wearing is most effective at reducing spread of the virus when compliance is high. Given the current shortages of medical masks, we recommend the adoption of public cloth mask wearing, as an effective form of source control, in conjunction with existing hygiene, distancing, and contact tracing strategies. Because many respiratory particles become smaller due to evaporation, we recommend increasing focus on a previously overlooked aspect of mask usage: mask wearing by infectious people ("source control") with benefits at the population level, rather than only mask wearing by susceptible people, such as health care workers, with focus on individual outcomes. We recommend that public officials and governments strongly encourage the use of widespread face masks in public, including the use of appropriate regulation.


Assuntos
COVID-19 , Busca de Comunicante , Máscaras , SARS-CoV-2 , COVID-19/epidemiologia , COVID-19/prevenção & controle , Humanos
2.
Nano Lett ; 20(7): 5544-5552, 2020 07 08.
Artigo em Inglês | MEDLINE | ID: mdl-32484683

RESUMO

The COVID-19 pandemic is currently causing a severe disruption and shortage in the global supply chain of necessary personal protective equipment (e.g., N95 respirators). The U.S. CDC has recommended use of household cloth by the general public to make cloth face coverings as a method of source control. We evaluated the filtration properties of natural and synthetic materials using a modified procedure for N95 respirator approval. Common fabrics of cotton, polyester, nylon, and silk had filtration efficiency of 5-25%, polypropylene spunbond had filtration efficiency 6-10%, and paper-based products had filtration efficiency of 10-20%. An advantage of polypropylene spunbond is that it can be simply triboelectrically charged to enhance the filtration efficiency (from 6 to >10%) without any increase in pressure (stable overnight and in humid environments). Using the filtration quality factor, fabric microstructure, and charging ability, we are able to provide an assessment of suggested fabric materials for homemade facial coverings.


Assuntos
Betacoronavirus , Infecções por Coronavirus/prevenção & controle , Máscaras , Pandemias/prevenção & controle , Pneumonia Viral/prevenção & controle , Têxteis , Aerossóis , Microbiologia do Ar , COVID-19 , Infecções por Coronavirus/transmissão , Eletricidade , Desenho de Equipamento , Filtração , Humanos , Máscaras/provisão & distribuição , Microscopia Eletrônica de Varredura , Nanoestruturas/química , Nanoestruturas/ultraestrutura , Nanotecnologia , Tamanho da Partícula , Equipamento de Proteção Individual/provisão & distribuição , Pneumonia Viral/transmissão , SARS-CoV-2
3.
Curr Opin Anaesthesiol ; 34(6): 726-734, 2021 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-34608056

RESUMO

PURPOSE OF REVIEW: The recent global pandemic has dramatically altered the anaesthesiology educational landscape in unexpected ways. It is important that we pause to learn from this crisis. RECENT FINDINGS: Most resident trainees actively caring for COVID-19 patients present with probable or subclinical finding of post-traumatic stress disorder. Anaesthesia resident training programmes evolved to continue the mission of anaesthesia education in the face of institutional restrictions and evolving clinical crises. SUMMARY: The recent global COVID-19 pandemic has illustrated how external stressors can cause significant disruption to traditional medical education pathways. Resilience to external disruptive forces in anaesthesia education include a willingness of leadership to understand the problem, flexibility in adapting to the needs of learners and instructors in the face of key challenges, deployment of technology and innovation-minded solution-finding where appropriate, and attention to Maslow's hierarchy of needs. VIDEO ABSTRACT: http://links.lww.com/COAN/A77.


Assuntos
Anestesiologia , COVID-19 , Educação de Pós-Graduação em Medicina , Humanos , Pandemias , SARS-CoV-2
4.
Anesth Analg ; 130(2): 333-340, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31124801

RESUMO

BACKGROUND: Twitter in anesthesiology conferences promotes rapid science dissemination, global audience participation, and real-time updates of simultaneous sessions. We designed this study to determine if an association exists between conference attendance/registration and 4 defined Twitter metrics. METHODS: Using publicly available data through the Symplur Healthcare Hashtags Project and the Symplur Signals, we collected data on total tweets, impressions, retweets, and replies as 4 primary outcome metrics for all registered anesthesiology conferences occurring from May 1, 2016 to April 30, 2017. The number of Twitter participants, defined as users who contributed a tweet, retweet, or reply 3 days before through 3 days after the conference, was collected. We also collected influencer data as determined by mentions (number of times a user is referenced). Two authors independently verified the categories for influencers assigned by Symplur. Conference demographic data were obtained by e-mail inquiries. Associations between meeting attendees/registrants and Twitter metrics, between Twitter participants and the metrics, and between physician influencers and Twitter participants were tested using Spearman rho. RESULTS: Fourteen conferences with 63,180 tweets were included. With the American Society of Anesthesiologists annual meeting included, the correlations between meeting attendance/registration and total tweets (rs = 0.588; P = .074), impressions (rs = 0.527; P = .117), and retweets (rs = 0.539; P = .108) were not statistically significant; for replies, it was moderately positive (rs = 0.648; P = .043). Without the American Society of Anesthesiologists annual meeting, total tweets (rs = 0.433; P = .244), impressions (rs = 0.350; P = .356), retweets (rs = 0.367; P = .332), and replies (rs = 0.517; P = .154) were not statistically significant. Secondary outcomes include a highly positive correlation between Twitter participation and total tweets (rs = 0.855; P < .001), very highly positive correlations between Twitter participation and impressions (rs = 0.938; P < .001), retweets (rs = 0.925; P < .001), and a moderately positive correlation between Twitter participation and replies (rs = 0.652; P = .044). Doctors were top influencers in 8 of 14 conferences, and the number of physician influencers in the top 10 influencers list at each conference had a moderately positive correlation with Twitter participation (rs = 0.602; P = .023). CONCLUSIONS: We observed that the number of Twitter participants for a conference is positively associated with Twitter activity metrics. No relationship between conference size and Twitter metrics was observed. Physician influencers may be an important driver of participants.


Assuntos
Anestesiologia/educação , Anestesiologia/tendências , Congressos como Assunto/tendências , Disseminação de Informação , Médicos/tendências , Mídias Sociais/tendências , Anestesiologia/métodos , Humanos , Disseminação de Informação/métodos
5.
J Med Internet Res ; 19(8): e280, 2017 08 17.
Artigo em Inglês | MEDLINE | ID: mdl-28818821

RESUMO

BACKGROUND: Health care conferences present a unique opportunity to network, spark innovation, and disseminate novel information to a large audience, but the dissemination of information typically stays within very specific networks. Social network analysis can be adopted to understand the flow of information between virtual social communities and the role of patients within the network. OBJECTIVE: The purpose of this study is to examine the impact engaged patients bring to health care conference social media information flow and how they expand dissemination and distribution of tweets compared to other health care conference stakeholders such as physicians and researchers. METHODS: From January 2014 through December 2016, 7,644,549 tweets were analyzed from 1672 health care conferences with at least 1000 tweets who had registered in Symplur's Health Care Hashtag Project from 2014 to 2016. The tweet content was analyzed to create a list of the top 100 influencers by mention from each conference, who were then subsequently categorized by stakeholder group. Multivariate linear regression models were created using stepwise function building to identify factors explaining variability as predictor variables for the model in which conference tweets were taken as the dependent variable. RESULTS: Inclusion of engaged patients in health care conference social media was low compared to that of physicians and has not significantly changed over the last 3 years. When engaged patient voices are included in health care conferences, they greatly increase information flow as measured by total tweet volume (beta=301.6) compared to physicians (beta=137.3, P<.001), expand propagation of information tweeted during a conference as measured by social media impressions created (beta=1,700,000) compared to physicians (beta=270,000, P<.001), and deepen engagement in the tweet conversation as measured by replies to their tweets (beta=24.4) compared to physicians (beta=5.5, P<.001). Social network analysis of hubs and authorities revealed that patients had statistically significant higher hub scores (mean 8.26×10-4, SD 2.96×10-4) compared to other stakeholder groups' Twitter accounts (mean 7.19×10-4, SD 3.81×10-4; t273.84=4.302, P<.001). CONCLUSIONS: Although engaged patients are powerful accelerators of information flow, expanders of tweet propagation, and greatly deepen engagement in conversation of tweets on social media of health care conferences compared to physicians, they represent only 1.4% of the stakeholder mix of the top 100 influencers in the conversation. Health care conferences that fail to engage patients in their proceedings may risk limiting their engagement with the public, disseminating scientific information to a narrow community and slowing flow of information across social media channels.


Assuntos
Participação do Paciente/métodos , Mídias Sociais/estatística & dados numéricos , Comunicação , Congressos como Assunto , Humanos , Médicos , Pesquisadores , Rede Social
6.
Am J Drug Alcohol Abuse ; 43(1): 78-86, 2017 01.
Artigo em Inglês | MEDLINE | ID: mdl-27712113

RESUMO

BACKGROUND: Treatments for reducing opioid withdrawal are limited and prone to problematic side effects. Laboratory studies, clinical observations, and limited human trial data suggest 5-HT3-receptor antagonists and antihistamines may be effective. OBJECTIVES: This double-blind, crossover, placebo-controlled study employing an acute physical dependence model evaluated whether (i) treatment with a 5-HT3-receptor antagonist (palonosetron) would reduce opioid withdrawal symptoms, and (ii) co-administration of an antihistamine (hydroxyzine) would enhance any treatment effect. METHODS: At timepoint T = 0, healthy (non-opioid dependent, non-substance abuser) male volunteers (N = 10) were pre-treated with either a) placebo, b) palonosetron IV (0.75 mg), or c) palonosetron IV (0.75 mg) and hydroxyzine PO (100 mg) in a crossover study design. This was followed at T = 30 by intravenous morphine (10 mg/70kg). At T = 165, 10 mg/70kg naloxone IV was given to precipitate opioid withdrawal. The objective opioid withdrawal score (OOWS) and subjective opioid withdrawal score (SOWS) were determined 5 and 15 minutes after naloxone administration (T = 170, 180, respectively). Baseline measurements were recorded at T = -30 and T = -15. RESULTS: Comparison of average baseline OOWS scores with OOWS scores obtained 15 minutes after naloxone was significant (p = 0.0001). Scores from 15 minutes post-naloxone infusion showed significant differences in OOWS scores between treatment groups: placebo, 3.7 ± 2.4; palonosetron, 1.5 ± 0.97; and palonosetron with hydroxyzine, 0.2 ± 0.1333. CONCLUSIONS: Pretreatment with palonosetron significantly reduced many signs of experimentally-induced opioid withdrawal. Co-administration with hydroxyzine further reduced opioid withdrawal severity. These results suggest that 5-HT3 receptor antagonists, alone or in combination with an antihistamine, may be useful in the treatment of opioid withdrawal.


Assuntos
Hidroxizina/uso terapêutico , Isoquinolinas/uso terapêutico , Quinuclidinas/uso terapêutico , Síndrome de Abstinência a Substâncias/tratamento farmacológico , Estudos Cross-Over , Método Duplo-Cego , Sinergismo Farmacológico , Voluntários Saudáveis , Humanos , Masculino , Morfina/efeitos adversos , Morfina/antagonistas & inibidores , Naloxona/farmacologia , Palonossetrom , Adulto Jovem
7.
N Engl J Med ; 379(22): 2182, 2018 11 29.
Artigo em Inglês | MEDLINE | ID: mdl-30485784
8.
N Engl J Med ; 369(20): e26, 2013 Nov 14.
Artigo em Inglês | MEDLINE | ID: mdl-24224639

RESUMO

This video demonstrates the placement of a laryngeal mask airway, an alternative airway device that is both efficacious and easy to place. The laryngeal mask airway is routinely used for patients receiving general anesthesia and, increasingly, in patient resuscitation.


Assuntos
Reanimação Cardiopulmonar/métodos , Máscaras Laríngeas , Reanimação Cardiopulmonar/instrumentação , Emergências , Parada Cardíaca/terapia , Humanos , Máscaras Laríngeas/efeitos adversos
10.
Pain Med ; 17(8): 1497-504, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-26814280

RESUMO

OBJECTIVE: Prolonged exposure to opioids is known to produce neuroplastic changes in animals; however, few studies have investigated the effects of short-term prescription opioid use in humans. A previous study from our laboratory demonstrated a dosage-correlated volumetric decrease in the right amygdala of participants administered oral morphine daily for 1 month. The purpose of this current study was to replicate and extend the initial findings. METHODS: Twenty-one participants with chronic low back pain were enrolled in this double-blind, placebo-controlled study. Participants were randomized to receive daily morphine (n = 11) or a matched placebo (n = 10) for 1 month. High-resolution anatomical images were acquired immediately before and after the treatment administration period. Morphological gray matter changes were investigated using tensor-based morphometry, and significant regions were subsequently tested for correlation with morphine dosage. RESULTS: Decreased gray matter volume was observed in several reward- and pain-related regions in the morphine group, including the bilateral amygdala, left inferior orbitofrontal cortex, and bilateral pre-supplementary motor areas. Morphine administration was also associated with significant gray matter increases in cingulate regions, including the mid cingulate, dorsal anterior cingulate, and ventral posterior cingulate. CONCLUSIONS: Many of the volumetric increases and decreases overlapped spatially with the previously reported changes. Individuals taking placebo for 1 month showed neither gray matter increases nor decreases. The results corroborate previous reports that rapid alterations occur in reward-related networks following short-term prescription opioid use.


Assuntos
Tonsila do Cerebelo/efeitos dos fármacos , Analgésicos Opioides/efeitos adversos , Substância Cinzenta/efeitos dos fármacos , Dor Lombar/tratamento farmacológico , Adulto , Tonsila do Cerebelo/patologia , Método Duplo-Cego , Feminino , Substância Cinzenta/patologia , Humanos , Interpretação de Imagem Assistida por Computador , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Morfina/efeitos adversos
11.
Paediatr Anaesth ; 24(2): 217-23, 2014 02.
Artigo em Inglês | MEDLINE | ID: mdl-24251450

RESUMO

Dr. Frederic A. 'Fritz' Berry (1935), Professor Emeritus of Anesthesiology and Pediatrics at the University of Virginia, has played a pioneering role in the development of pediatric anesthesiology through training generations of anesthesiologists. He identifies his early advocacy of balanced electrolyte solution for perioperative fluid resuscitation as his defining contribution. Based on his clinical experiences, he pushed to extend the advances in adult fluid resuscitation into pediatric practice. He imparted these and other insights to his colleagues although textbooks, book chapters, original journal publications, and decades of Refresher Course Lectures at the American Society of Anesthesiologists' annual meetings. A model educator, clinician, and researcher, he shaped the careers of hundreds of physicians-in-training while advancing the field of pediatric anesthesiology.


Assuntos
Anestesiologia/história , Hidratação/história , Pediatria/história , Ressuscitação/história , Anestesia/efeitos adversos , Anestesiologia/educação , Criança , Pré-Escolar , Eletrólitos/uso terapêutico , História do Século XX , Humanos , Lactente , Recém-Nascido , Poliomielite/terapia , Respiração Artificial
13.
Curr Opin Anaesthesiol ; 25(6): 699-718, 2012 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-23103844

RESUMO

PURPOSE OF REVIEW: There is an increasing importance of incorporating mobile computing into the academic medical environment. A growing majority of physicians, residents and medical students currently use mobile devices for education, access to clinical information and to facilitate bedside care. Therefore, it is important to assess the current opportunities and challenges in the use of mobile computing devices in the academic medical environment. RECENT FINDINGS: Current research has found that a majority of physicians, residents and medical students either own or use mobile devices. In addition, studies have shown that these devices are effective as educational tools, resource guides and aids in patient care. Although there are opportunities for medical education, issues of deployment must still be addressed, such as privacy, connectivity, standardization and professionalism. SUMMARY: Understanding the opportunities and challenges of using mobile computing devices in the academic medical environment can help determine the feasibility and benefits of their use for individuals and institutions.


Assuntos
Anestesiologia/economia , Metodologias Computacionais , Educação Médica/tendências , Centros Médicos Acadêmicos/tendências , Anestesiologia/tendências , Competência Clínica , Hospitais Universitários , Humanos , Privacidade
14.
JMIR Res Protoc ; 11(7): e36395, 2022 Jul 18.
Artigo em Inglês | MEDLINE | ID: mdl-35849426

RESUMO

BACKGROUND: Patient-reported outcome measures (PROMs) and patient-reported experience measures (PREMs) are self-reporting tools that can measure important information about patients, such as health priorities, experience, and perception of outcome. The use of traditional objective measures such as vital signs and lab values can be supplemented with these self-reported patient measures to provide a more complete picture of a patient's health status. Machine learning, the use of computer algorithms that improve automatically through experience, is a powerful tool in health care that often does not use subjective information shared by patients. However, machine learning has largely been based on objective measures and has been developed without patient or public input. Algorithms often do not have access to critical information from patients and may be missing priorities and measures that matter to patients. Combining objective measures with patient-reported measures can improve the ability of machine learning algorithms to assess patients' health status and improve the delivery of health care. OBJECTIVE: The objective of this scoping review is to identify gaps and benefits in the way machine learning is integrated with patient-reported outcomes for the development of improved public and patient partnerships in research and health care. METHODS: We reviewed the following 3 questions to learn from existing literature about the reported gaps and best methods for combining machine learning and patient-reported outcomes: (1) How are the public engaged as involved partners in the development of artificial intelligence in medicine? (2) What examples of good practice can we identify for the integration of PROMs into machine learning algorithms? (3) How has value-based health care influenced the development of artificial intelligence in health care? We searched Ovid MEDLINE(R), Embase, PsycINFO, Science Citation Index, Cochrane Library, and Database of Abstracts of Reviews of Effects in addition to PROSPERO and the ClinicalTrials website. The authors will use Covidence to screen titles and abstracts and to conduct the review. We will include systematic reviews and overviews published in any language and may explore additional study types. Quantitative, qualitative, and mixed methods studies are included in the reviews. RESULTS: The search is completed, and Covidence software will be used to work collaboratively. We will report the review using the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines and Critical Appraisal Skills Programme for systematic reviews. CONCLUSIONS: Findings from our review will help us identify examples of good practice for how to involve the public in the development of machine learning systems as well as interventions and outcomes that have used PROMs and PREMs. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/36395.

15.
Patient Educ Couns ; 105(4): 1041-1047, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-34334264

RESUMO

The public and patients can be powerful sensors for shaping and powering healthcare research. They are joining research teams as investigators and collaborators to co-produce evidence for the practical use of interventions in clinical practice. While clinicians and researchers are encouraged by funders and policymakers to involve the public and patients as partners in research, knowledge on what involvement consists of is limited, and the continuum between consultation, collaboration and co-production are not clearly defined. In this article, we explore Patient and Public Involvement (PPI) and introduce greater involvement through research co-production. Co-production describes ways that research partnership can work through public and patient involvement and we outline the similarities of co-production to "The Commons", a strategy utilized by economists to increase effective use of resources. We share examples of how public and patient involvement have used co-production, to demonstrate financial and health benefits. We then outline practical challenges at system, social and cultural levels and consider how others have worked to resolve them.


Assuntos
Pesquisa sobre Serviços de Saúde , Participação do Paciente , Humanos , Conhecimento , Encaminhamento e Consulta , Pesquisadores
16.
Am J Infect Control ; 50(8): 878-884, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-35908826

RESUMO

BACKGROUND: Face shields were widely used in 2020-2021 as facial personal protective equipment (PPE). Laboratory evidence about how protective face shields might be and whether real world user priorities and usage habits conflicted with best practice for maximum possible protection was lacking - especially in limited resource settings. METHODS: Relative protective potential of 13 face shield designs were tested in a controlled laboratory setting. Community and health care workers were surveyed in middle income country cities (Brazil and Nigeria) about their preferences and perspectives on face shields as facial PPE. Priorities about facial PPE held by survey participants were compared with the implications of the laboratory-generated test results. RESULTS: No face shield tested totally eliminated exposure. Head orientation and design features influenced the level of protection. Over 600 individuals were interviewed in Brazil and Nigeria (including 240 health care workers) in March-April 2021. Respondents commented on what influenced their preferred forms of facial PPE, how they tended to clean face shields, and their priorities in choosing a face cover product. Surveyed health care workers commonly bought personal protection equipment for use at work. CONCLUSIONS: All face shields provided some protection but none gave high levels of protection against external droplet contamination. Respondents wanted facial PPE that considered good communication, secure fixture, good visibility, comfort, fashion, and has validated protectiveness.


Assuntos
COVID-19 , Equipamento de Proteção Individual , COVID-19/prevenção & controle , Países em Desenvolvimento , Pessoal de Saúde , Humanos , Equipamentos de Proteção
17.
JMIR Res Protoc ; 11(12): e36549, 2022 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-36454625

RESUMO

BACKGROUND: The design of personal protective equipment (PPE) may affect well-being and clinical work. PPE as an integrated item may improve usability and increase adherence by healthcare professionals. Human factors design and safety may reduce occupational-acquired diseases. As an integrated PPE, a lightweight protective air-purifying respirator (L-PAPR) could be used during health procedures where healthcare professionals are exposed to airborne pathogens. The human factors affecting the implementation of alternative PPE such as L-PAPR have not been thoroughly studied. The population of interest is health care professionals, the intervention is the performance by PPE during tasks across the three PPE types 1.) N95 respirators and face shields, 2.)traditional powered air-purifying respirator(PAPR), and 3.) L-PAPR. The outcomes are user error, communications, safety, and end-user preferences. OBJECTIVE: This study will assess whether the L-PAPR improves health care professionals' comfort in terms of perceived workload and physical and psychological burden during direct patient care when compared with the traditional PAPR or N95 and face shield. This study also aims to evaluate human factors during the comparison of the use of L-PAPR with a combination of N95 respirators plus face shields or the traditional PAPRs. METHODS: This is an interventional randomized crossover quality improvement feasibility study consisting of a 3-site simulation phase with 10 participants per site and subsequent field testing in 2 sites with 30 participants at each site. The 3 types of respiratory PPE will be compared across medical tasks and while donning and doffing. We will evaluate the user's perceived workload, usability, usage errors, and heart rate. We will conduct semistructured interviews to identify barriers and enablers to implementation across each PPE type over a single continuous wear episode and observe interpersonal communications across conditions and PPE types. RESULTS: We expect the research may highlight communication challenges and differences in usability and convenience across PPE types along with error frequency during PPE use across PPE types, tasks, and time. CONCLUSIONS: The design of PPE may affect overall well-being and hinder or facilitate clinical work. Combining 2 pieces of PPE into a single integrated item may improve usability and reduce occupational-acquired diseases. The human factors affecting the implementation of an alternative PPE such as L-PAPR or PAPR have not been thoroughly studied. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): PRR1-10.2196/36549.

18.
Infect Control Hosp Epidemiol ; 43(7): 876-885, 2022 07.
Artigo em Inglês | MEDLINE | ID: mdl-34016200

RESUMO

OBJECTIVE: The coronavirus disease 2019 (COVID-19) pandemic has resulted in shortages of personal protective equipment (PPE), underscoring the urgent need for simple, efficient, and inexpensive methods to decontaminate masks and respirators exposed to severe acute respiratory coronavirus virus 2 (SARS-CoV-2). We hypothesized that methylene blue (MB) photochemical treatment, which has various clinical applications, could decontaminate PPE contaminated with coronavirus. DESIGN: The 2 arms of the study included (1) PPE inoculation with coronaviruses followed by MB with light (MBL) decontamination treatment and (2) PPE treatment with MBL for 5 cycles of decontamination to determine maintenance of PPE performance. METHODS: MBL treatment was used to inactivate coronaviruses on 3 N95 filtering facepiece respirator (FFR) and 2 medical mask models. We inoculated FFR and medical mask materials with 3 coronaviruses, including SARS-CoV-2, and we treated them with 10 µM MB and exposed them to 50,000 lux of white light or 12,500 lux of red light for 30 minutes. In parallel, integrity was assessed after 5 cycles of decontamination using multiple US and international test methods, and the process was compared with the FDA-authorized vaporized hydrogen peroxide plus ozone (VHP+O3) decontamination method. RESULTS: Overall, MBL robustly and consistently inactivated all 3 coronaviruses with 99.8% to >99.9% virus inactivation across all FFRs and medical masks tested. FFR and medical mask integrity was maintained after 5 cycles of MBL treatment, whereas 1 FFR model failed after 5 cycles of VHP+O3. CONCLUSIONS: MBL treatment decontaminated respirators and masks by inactivating 3 tested coronaviruses without compromising integrity through 5 cycles of decontamination. MBL decontamination is effective, is low cost, and does not require specialized equipment, making it applicable in low- to high-resource settings.


Assuntos
COVID-19 , Viroses , COVID-19/prevenção & controle , Descontaminação/métodos , Reutilização de Equipamento , Humanos , Máscaras , Azul de Metileno/farmacologia , Respiradores N95 , Equipamento de Proteção Individual , SARS-CoV-2
19.
Anal Bioanal Chem ; 400(3): 715-28, 2011 May.
Artigo em Inglês | MEDLINE | ID: mdl-21400080

RESUMO

Opioids such as morphine are the cornerstone of pain treatment. The challenge of measuring the concentrations of morphine and its active metabolites in order to assess human pharmacokinetics and monitor therapeutic drugs in children requires assays with high sensitivity in small blood volumes. We developed and validated a semi-automated LC-MS/MS assay for the simultaneous quantification of morphine and its active metabolites morphine 3ß-glucuronide (M3G) and morphine 6ß-glucuronide (M6G) in human plasma and in dried blood spots (DBS). Reconstitution in water (DBS only) and addition of a protein precipitation solution containing the internal standards were the only manual steps. Morphine and its metabolites were separated on a Kinetex 2.6-µm PFP analytical column using an acetonitrile/0.1% formic acid gradient. The analytes were detected in the positive multiple reaction mode. In plasma, the assay had the following performance characteristics: range of reliable response of 0.25-1000 ng/mL (r(2) > 0.99) for morphine, 1-1,000 ng/mL (r(2) > 0.99) for M3G, and 2.5-1,000 ng/mL for M6G. In DBS, the assay had a range of reliable response of 1-1,000 ng/mL (r(2) > 0.99) for morphine and M3G, and of 2.5-1,000 ng/mL for M6G. For inter-day accuracy and precision for morphine, M3G and M6G were within 15% of the nominal values in both plasma and DBS. There was no carryover, ion suppression, or matrix interferences. The assay fulfilled all predefined acceptance criteria, and its sensitivity using DBS samples was adequate for the measurement of pediatric pharmacokinetic samples using a small blood of only 20-50 µL.


Assuntos
Analgésicos Opioides/sangue , Derivados da Morfina/sangue , Morfina/sangue , Espectrometria de Massas em Tandem/métodos , Analgésicos Opioides/metabolismo , Cromatografia Líquida de Alta Pressão/métodos , Humanos , Limite de Detecção , Morfina/metabolismo , Derivados da Morfina/metabolismo
20.
Anesth Analg ; 112(2): 430-9, 2011 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-21081766

RESUMO

BACKGROUND: Despite the use of web-based information resources by both anesthesia departments and applicants, little research has been done to assess these resources and determine whether they are meeting applicant needs. Evidence is needed to guide anesthesia informatics research in developing high-quality anesthesia residency program Web sites (ARPWs). METHODS: We used an anonymous web-based program (SurveyMonkey, Portland, OR) to distribute a survey investigating the information needs and perceived usefulness of ARPWs to all 572 Stanford anesthesia residency program applicants. A quantitative scoring system was then created to assess the quality of ARPWs in meeting the information needs of these applicants. Two researchers independently analyzed all 131 ARPWs in the United States to determine whether the ARPWs met the needs of applicants based on the scoring system. Finally, a qualitative assessment of the overall user experience of ARPWs was developed to account for the subjective elements of the Web site's presentation. RESULTS: Ninety-eight percent of respondents reported having used ARPWs during the application process. Fifty-six percent reported first visiting the Stanford ARPW when deciding whether to apply to Stanford's anesthesia residency program. Multimedia and Web 2.0 technologies were "very" or "most" useful in "learning intangible aspects of a program, like how happy people are" (42% multimedia and Web 2.0 versus 14% text and photos). ARPWs, on average, contained only 46% of the content items identified as important by applicants. The average (SD) quality scores among all ARPWs was 2.06 (0.59) of 4.0 maximum points. The mean overall qualitative score for all 131 ARPWs was 4.97 (1.92) of 10 points. Only 2% of applicants indicated that the majority (75%-100%) of Web sites they visited provided a complete experience. CONCLUSION: Anesthesia residency applicants rely heavily on ARPWs to research programs, prepare for interviews, and formulate a rank list. Anesthesia departments can improve their ARPWs by including information such as total hours worked and work hours by rotation (missing in 96% and 97% of ARPWs) and providing a valid web address on the Fellowship and Residency Electronic Interactive Database Access System (FREIDA) (missing in 28% of ARPWs).


Assuntos
Acesso à Informação , Anestesiologia/educação , Educação de Pós-Graduação em Medicina , Internet , Internato e Residência , Candidatura a Emprego , Atitude do Pessoal de Saúde , Atitude Frente aos Computadores , Escolha da Profissão , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Multimídia , Percepção , Avaliação de Programas e Projetos de Saúde , Autorrelato , Inquéritos e Questionários , Estados Unidos
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