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1.
Braz Dent J ; 31(4): 392-398, 2020 Sep 04.
Artigo em Inglês | MEDLINE | ID: mdl-32901715

RESUMO

This study aimed to analyze the videos available on YouTube related to dentistry and the novel coronavirus (COVID-19), as there is no such analysis in the existing literature. The terms "dental" and "COVID-19" were searched on YouTube on May 9, 2020. The top 116 English-language videos with at least 300 views were analyzed by two observers. Data was saved for each video, including target audience, source, country of origin, content, number of views, time watched, average views, duration, like/dislike ratio, and usefulness. Total video information and quality index (VIQI) scores were calculated, consisting of flow, information, accuracy, quality, and precision indices. Non-parametric tests were used for analysis. The analyzed videos were viewed 375,000 times and totaled 20 h of content. Most videos were uploaded by dentists (45.7%), originated from the United States (79.3%), and contained information targeted towards patients (48.3%). Nearly half of the videos (47.4%) were moderately useful. For the usefulness of the videos, statistically significant differences were found for all indices as well as total VIQI scores. A comparison of the indices according to the relevance of the videos showed statistically significant differences in the videos' information and precision indices and total VIQI scores. The results of this study showed that dentistry YouTube videos related to COVID-19 had high view numbers; however, the videos were generally moderate in quality and usefulness.


Assuntos
Infecções por Coronavirus , Pandemias , Pneumonia Viral , Mídias Sociais , Betacoronavirus , Odontologia , Humanos , Estados Unidos , Gravação em Vídeo
2.
Acta Biomed ; 91(3): ahead of print, 2020 08 10.
Artigo em Inglês | MEDLINE | ID: mdl-32921743

RESUMO

During COVID-19 pandemic, the recruitment of new personnel was necessary to guarantee an adequate healthcare level to all patients affected by SARS-CoV-2 virus. In order to deal with the sanitary emergency, unusual selection procedures have been adopted inside the public health system by searching for new healthcare personnel. The recruitment of new candidates with a short self-introduction was very effective and permitted to select 65 nurses.


Assuntos
Betacoronavirus , Infecções por Coronavirus/epidemiologia , Assistência à Saúde/organização & administração , Pessoal de Saúde/organização & administração , Pneumonia Viral/epidemiologia , Gravação em Vídeo/métodos , Humanos , Pandemias
3.
Nat Commun ; 11(1): 4854, 2020 09 25.
Artigo em Inglês | MEDLINE | ID: mdl-32978383

RESUMO

Chronic imaging of neuronal networks in vitro has provided fundamental insights into mechanisms underlying neuronal function. Current labeling and optical imaging methods, however, cannot be used for continuous and long-term recordings of the dynamics and evolution of neuronal networks, as fluorescent indicators can cause phototoxicity. Here, we introduce a versatile platform for label-free, comprehensive and detailed electrophysiological live-cell imaging of various neurogenic cells and tissues over extended time scales. We report on a dual-mode high-density microelectrode array, which can simultaneously record in (i) full-frame mode with 19,584 recording sites and (ii) high-signal-to-noise mode with 246 channels. We set out to demonstrate the capabilities of this platform with recordings from primary and iPSC-derived neuronal cultures and tissue preparations over several weeks, providing detailed morpho-electrical phenotypic parameters at subcellular, cellular and network level. Moreover, we develop reliable analysis tools, which drastically increase the throughput to infer axonal morphology and conduction speed.


Assuntos
Rede Nervosa/fisiologia , Neurônios/fisiologia , Imagem Óptica/métodos , Análise de Célula Única/métodos , Animais , Axônios , Encéfalo , Células Cultivadas , Células-Tronco Pluripotentes Induzidas , Camundongos , Microeletrodos , Modelos Animais , Rede Nervosa/diagnóstico por imagem , Imagem Óptica/instrumentação , Ratos , Ratos Wistar , Gravação em Vídeo
4.
S Afr Med J ; 110(6): 532-536, 2020 May 29.
Artigo em Inglês | MEDLINE | ID: mdl-32880567

RESUMO

BACKGROUND: Institutions are increasingly using technology to augment the class learning experience of medical students. Especially in Africa, local content is key to allow insights and knowledge to emerge and build transformative capacity for students and patients. There is currently no peer-reviewed video content produced by students with the aim of providing education on orthopaedic topics for medical students and patients in this region. OBJECTIVES: To evaluate the demographic and geographical viewership as well as video-specific statistics of orthopaedic teaching videos for medical students on a YouTube channel, with the expressed aim of informing future content production. METHODS: Videos were produced by South African (SA) medical students as a problem-based collaborative project. Student-owned smartphones and various types of free video editing software were used to produce these videos, which were then assessed by a group of orthopaedic specialists and uploaded onto a YouTube channel (UCTeach). The analytical reports of this channel generated by Google and YouTube were analysed regarding watch time per day (minutes), average view duration (minutes), most watched videos, top geographies, age and gender. RESULTS: A total of 83 videos were uploaded to the UCTeach Ortho channel during a 2-year period, with a total watch time of 857 062 minutes and 337 983 views. The majority of viewers were between the ages of 18 and 34 years (85%). India had the most views (n=69 089), followed by the USA (n=66 257) and SA (n=21 882). Most of the videos were watched on mobile phones (n=183 299) and computers (n=128 228). The most watched video, produced in April 2016, was on physiological and pathological gait, with 51 314 views. CONCLUSIONS: Our study provides proof of concept for a new educational material creation and dissemination strategy. A low-cost local collaborative orthopaedic video project by medical students for medical students can lead to high view counts and watch time on YouTube. It is accessible to audiences in low-, middle- and high-income countries. The students' educational videos also reached a global audience consistently over a 3-year period.


Assuntos
Educação de Graduação em Medicina/métodos , Internet , Ortopedia/educação , Gravação em Vídeo , África Austral , Avaliação Educacional , Feminino , Humanos , Masculino , Adulto Jovem
5.
Indian J Ophthalmol ; 68(10): 2103-2106, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-32971617

RESUMO

Purpose: The purpose of this study is to evaluate fluid droplet spray generation during phacoemulsification (PE), pars plana vitrectomy (PPV), and fragmatome lensectomy (FL) and assess factors affecting these. Methods: This is an experimental study. PE through 2.2 and 2.8 mm incisions was performed in six goat eyes and four simulator eyes using both continuous and interrupted ultrasound (U/S). PPV and FL were performed in three goat eyes. Generation of visible fluid droplet spray was analyzed from video recordings through the microscope camera and an external digital camera. Hydroxypropylmethylcellulose (HPMC) was applied over the incision site during PE and FL. Results: When PE was performed through both incision sizes, there was no visible fluid droplet spray if the phaco tip was centered in the incision, without sleeve compression. When there was phaco tip movement with the phaco sleeve sandwiched between the tip and the incision wall, there was visible fluid droplet spray generation. It was more difficult to induce fluid droplet spray with 2.8 mm incision, and spray was lesser with interrupted U/S. During PPV, there was no droplet spray. During FL, fluid droplet spray was only seen when U/S was delivered with the fragmatome tip close to the sclerotomy. HPMC impeded droplet spray. Conclusion: Fluid droplet generation during PE can be minimized to a large extent by keeping the phaco tip centered within the incision, avoiding sleeve compression. Smaller incision and continuous U/S were more prone to droplet generation. FL should be performed away from sclerotomy. HPMC over incision is recommended.


Assuntos
Betacoronavirus , Líquidos Corporais/química , Infecções por Coronavirus/epidemiologia , Complicações Intraoperatórias , Microbolhas , Facoemulsificação/instrumentação , Pneumonia Viral/epidemiologia , Vitrectomia/instrumentação , Experimentação Animal , Animais , Infecções por Coronavirus/prevenção & controle , Cabras , Transmissão de Doença Infecciosa do Paciente para o Profissional/prevenção & controle , Pandemias/prevenção & controle , Fotografação , Pneumonia Viral/prevenção & controle , Gravação em Vídeo
6.
Eur Rev Med Pharmacol Sci ; 24(14): 7845-7854, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-32744712

RESUMO

OBJECTIVE: Current trends show a rise of attention given to breast cancer patients' quality of life and the surgical reconstructive result. Along with this trend, surgical training quality and efficacy are gaining importance and innovative training methods such as online videos shared on social media portals, are becoming main updating tools. In hazardous times like COVID-19 pandemic nowadays, online communication becomes of vital importance and adaptation and innovation are fundamental to keep research and education alive. The authors aimed to investigate the role of video and multimedia sources on the daily activity and surgical training of a representative group of surgeons specifically dedicated to oncologic, oncoplastic and reconstructive breast surgeries. MATERIALS AND METHODS: A survey was produced and administered to 20 major Italian Breast Centers. Collected data were analyzed with Fisher's Exact Test. RESULTS: From October 2019 to March 2020, a total of 320 surveys were collected. Among the responders, there were 188 trainees (intern medical doctors and residents) and 110 faculty, 72% of them belonged to a plastic surgery environment, while 28% to general surgery environment. Almost all respondents have ever watched videos concerning breast surgery. CONCLUSIONS: The results of the study show how breast surgeons rely on videos and web platforms, mostly YouTube, when searching for training info about surgical procedures. Social media offer great opportunities for sharing knowledge and diffusion of new ideas but greater attention to their reliability is mandatory.


Assuntos
Infecções por Coronavirus/patologia , Educação a Distância/normas , Pneumonia Viral/patologia , Cirurgiões/psicologia , Betacoronavirus/isolamento & purificação , Neoplasias da Mama/patologia , Neoplasias da Mama/cirurgia , Infecções por Coronavirus/virologia , Feminino , Humanos , Mastectomia , Pandemias , Pneumonia Viral/virologia , Qualidade de Vida , Mídias Sociais , Inquéritos e Questionários , Gravação em Vídeo
7.
Proc Natl Acad Sci U S A ; 117(33): 20171-20179, 2020 08 18.
Artigo em Inglês | MEDLINE | ID: mdl-32747561

RESUMO

Extracellular electron transfer (EET) allows microorganisms to gain energy by linking intracellular reactions to external surfaces ranging from natural minerals to the electrodes of bioelectrochemical renewable energy technologies. In the past two decades, electrochemical techniques have been used to investigate EET in a wide range of microbes, with emphasis on dissimilatory metal-reducing bacteria, such as Shewanella oneidensis MR-1, as model organisms. However, due to the typically bulk nature of these techniques, they are unable to reveal the subpopulation variation in EET or link the observed electrochemical currents to energy gain by individual cells, thus overlooking the potentially complex spatial patterns of activity in bioelectrochemical systems. Here, to address these limitations, we use the cell membrane potential as a bioenergetic indicator of EET by S. oneidensis MR-1 cells. Using a fluorescent membrane potential indicator during in vivo single-cell-level fluorescence microscopy in a bioelectrochemical reactor, we demonstrate that membrane potential strongly correlates with EET. Increasing electrode potential and associated EET current leads to more negative membrane potential. This EET-induced membrane hyperpolarization is spatially limited to cells in contact with the electrode and within a near-electrode zone (<30 µm) where the hyperpolarization decays with increasing cell-electrode distance. The high spatial and temporal resolution of the reported technique can be used to study the single-cell-level dynamics of EET not only on electrode surfaces, but also during respiration of other solid-phase electron acceptors.


Assuntos
Membrana Externa Bacteriana/fisiologia , Transporte de Elétrons/fisiologia , Potenciais da Membrana/fisiologia , Shewanella/fisiologia , Benzotiazóis/metabolismo , Fenômenos Eletrofisiológicos , Corantes Fluorescentes , Análise de Célula Única/métodos , Gravação em Vídeo
8.
PLoS One ; 15(8): e0236144, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32785217

RESUMO

Habitat loss caused by deforestation is a global driver of predator population declines. However, few studies have focussed on these effects for mesopredator populations, particularly the cryptic and elusive species inhabiting tropical rainforests. We conducted camera trapping from 2009-11 and 2014-16, and used occupancy modelling to understand trends of Sumatran mesopredator occupancy in response to forest loss and in the absence of threats from poaching. By comparing the two survey periods we quantify the trend of occupancy for three sympatric felid species in the tropical rainforest landscape of Kerinci Seblat National Park. Between 2000 and 2014, forest loss across four study sites ranged from 2.6% to 8.4%. Of three threatened felid species, overall occupancy by Sunda clouded leopard (Neofelis diardi) and Asiatic golden cat (Catopuma temminckii) remained stable across all four areas between the two survey periods, whilst marbled cat (Pardofelis marmorata) occupancy increased. In general occupancy estimates for the three species were: lower in lowland forest and increased to attain their highest values in hill forest, where they declined thereafter; increased further from the forest edge; positively correlated with distance to river, except for golden cat in the second survey where the relationship was negative; and, increased further from active deforestation, especially for clouded leopard in the second survey, but this was some 10-15km away. Our study offers fresh insights into these little known mesopredators in Sumatra and raises the practically important question of how far-reaching is the shadow of the encroachment and road development that typified this deforestation.


Assuntos
Distribuição Animal , Conservação dos Recursos Naturais , Espécies em Perigo de Extinção/estatística & dados numéricos , Felidae , Parques Recreativos/estatística & dados numéricos , Animais , Monitorização de Parâmetros Ecológicos/estatística & dados numéricos , Espécies em Perigo de Extinção/tendências , Geografia , Indonésia , Parques Recreativos/tendências , Dinâmica Populacional/estatística & dados numéricos , Dinâmica Populacional/tendências , Comportamento Predatório , Floresta Úmida , Gravação em Vídeo/estatística & dados numéricos
9.
Rev Lat Am Enfermagem ; 28: e3329, 2020.
Artigo em Português, Espanhol, Inglês | MEDLINE | ID: mdl-32813782

RESUMO

OBJECTIVE: develop and validate a video on bed bathing directed to nursing professionals and students. METHOD: the video was based on the literature and presents the definition of bed bath, indications for its performance, steps to perform it, and potential complications. Nursing professors and nurses validated it. They assessed the pertinence of content, clarity, and language of the video scenes. The Delphi Technique was used in this phase. After recording, three nursing professors, along with undergraduate nursing students from a public university, assessed the educational video. The professors first watched the video and suggested changes, and then the students watched the video after the changes were implemented. RESULTS: six rounds were needed for experts to validate the video script using the Delphi Technique. After the video recording, undergraduate students considered the video of easy understanding. CONCLUSION: the video script was composed of four topics and was validated by experts after six rounds. The video was assessed by the professors and nursing undergraduate students, who considered the topics and the video as a whole as apprehensible. This study is expected to contribute to professional training and improvement of the knowledge and skills of nursing students.


Assuntos
Bacharelado em Enfermagem , Estudantes de Enfermagem , Banhos , Humanos , Gravação em Vídeo
10.
PLoS One ; 15(8): e0236995, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32785245

RESUMO

Blended therapy is a new approach combining advantages of face-to-face psychotherapy and Internet- and mobile-based interventions. Acceptance is a fundamental precondition for its implementation. The aim of this study was to assess 1) the acceptance of psychotherapists towards blended therapy, 2) the effectiveness of an acceptance facilitating intervention (AFI) on psychotherapists' acceptance towards blended therapy and 3) to identify potential effect moderators. Psychotherapists (N = 284) were randomly assigned to a control (CG) or an intervention group (IG). The IG received a short video showing an example of blended therapy, the CG an attention placebo video. Both groups received a reliable online questionnaire assessing acceptance, effort expectancy, performance expectancy, facilitating conditions, social influence and internet anxiety. Between group differences were examined using t-tests and Mann-Whitney tests. Exploratory analysis was conducted to identify moderators. Psychotherapists in CG showed mixed baseline acceptance towards blended therapy (low = 40%, moderate = 33%, high = 27%). IG showed significantly higher acceptance compared to CG (d = .27, pone-sided = .029; low = 24%, moderate = 47%, high = 30%). Bootstrapped confidence intervals were overlapping. Performance expectancy (d = .35), effort expectancy (d = .44) and facilitating conditions (d = .28) were significantly increased (p < .05). No effects on social influence and internet anxiety were found (p>.05). Exploratory analysis indicated psychodynamic oriented psychotherapists profiting particularly from the AFI. Blended therapy is a promising approach to improve healthcare. Psychotherapists show mixed acceptance, which might be improvable by AFIs, particularly in subpopulations of initially rather skeptical psychotherapists. Forthcoming studies should extend the present study by shifting focus from attitudes to the impact of different forms of AFIs on uptake.


Assuntos
Psicoterapia/métodos , Telemedicina/métodos , Adulto , Feminino , Alemanha , Humanos , Masculino , Transtornos Mentais/terapia , Pessoa de Meia-Idade , Avaliação de Resultados em Cuidados de Saúde , Relações Profissional-Paciente , Psicoterapia/educação , Psicoterapia Psicodinâmica/métodos , Distribuição Aleatória , Inquéritos e Questionários , Gravação em Vídeo
11.
PLoS One ; 15(8): e0238060, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32857788

RESUMO

BACKGROUND: Double-lumen tube is commonly used in thoracic surgeries that need one-lung ventilation, but its big size and stiff structure make it harder to perform intubation than a conventional tracheal intubation tube. OBJECTIVES: To investigate the effectiveness and safety of videoscopes for double-lumen tube insertion. The primary outcome was the success rate of first attempt intubation. Secondary outcomes were intubation time, malposition, oral mucosal damage, sore throat, and external manipulation. DESIGN: Systematic review and network meta-analysis. DATA SOURCES: Databases (Pubmed, Embase, Cochrane, Kmbase, Web of science, Scopus) up to June 23, 2020 were searched. ELIGIBILITY: Randomized controlled trials comparing different videoscopes for double-lumen tube intubation were included in this study. METHODS: We classified and lumped the videoscope devices into the following groups: standard (non-channeled) videolaryngoscope, channeled videolaryngoscope, videostylet, and direct laryngoscope. After assessing the quality of evidence, we statistically analyzed and chose the best device based on the surface under the cumulative ranking curve (SUCRA) by using STATA software (version 16). RESULTS: We included 23 studies (2012 patients). Based on the success rate of the first attempt, a rankogram suggested that the standard videolaryngoscope (76.4 of SUCRA) was the best choice, followed by videostylet (65.5), channeled videolaryngoscope (36.1), and direct laryngoscope (22.1), respectively. However, with regard to reducing the intubation time, the best choice was videostylet, followed by a direct laryngoscope, channeled videolaryngoscope, and standard videolaryngoscope, respectively. Direct laryngoscope showed the lowest incidence of malposition but required external manipulation the most. Channeled videolaryngoscope showed the highest incidence of oral mucosal damage, but showed the lower incidence of sore throat than standard videolaryngoscope or direct laryngoscope. CONCLUSION: Most videoscopes improved the success rate of double-lumen tube intubation; however, they were time-consuming (except videostylet) and had a higher malposition rate than the direct laryngoscope.


Assuntos
Laringoscopia/instrumentação , Cirurgia Torácica/métodos , Desenho de Equipamento , Humanos , Intubação Intratraqueal/efeitos adversos , Ventilação Monopulmonar , Faringite/etiologia , Ensaios Clínicos Controlados Aleatórios como Assunto , Gravação em Vídeo/instrumentação , Gravação em Vídeo/métodos
12.
Medicine (Baltimore) ; 99(30): e21054, 2020 Jul 24.
Artigo em Inglês | MEDLINE | ID: mdl-32791677

RESUMO

BACKGROUND/OBJECTIVE: Academic self-concept is an important construct within the disciplines of medicine, psychology, and education. Enhancing the academic self-concept of students with special educational needs is very crucial because it is associated with their quality of life. This study aimed to examine the effect of a video-guided educational technology intervention on the academic self-concept of adolescents with hearing impairment who were attending inclusive nonresidential public schools in Southeast Nigeria. METHODS: This study adopted a randomized controlled trial design. The participants were 60 junior secondary students with hearing impairment. We implemented a video-guided educational technology intervention. It relied on the use of 13-minute video clips with captions/subtitles, which covered academic self-concept-related themes. The Academic Self-Concept Questionnaire, which has been developed by Liu and Wang, was used to collect baseline, posttreatment, and follow-up data. We conducted independent-samples and paired t test and computed Cohen d and Glass Δ to analyze the data. RESULTS: The video-guided educational technology intervention significantly improved the academic self-concept of the treatment group participants, when compared with the care-as-usual control group participants, t(58) = 9.07, P < .001. These improvements in academic self-concept were sustained at follow up among the treatment group participants, when compared with the care-as-usual control group participants, t(48.56) = 10.898, P < .001. Within-subjects comparisons showed that the academic self-concept of the treatment group participants had significantly improved across the different time points at which they were assessed. CONCLUSION: The video-guided educational technology intervention was effective in improving the academic self-concept of adolescents with hearing impairment who were attending inclusive nonresidential public schools. Large-scale studies are needed to maximize the impact of video-guided educational technology interventions on students with hearing impairments who attend inclusive non residential public schools in Nigeria.


Assuntos
Recursos Audiovisuais , Pessoas com Deficiência Auditiva/psicologia , Educação Física e Treinamento , Autoimagem , Estudantes/psicologia , Adolescente , Criança , Tecnologia Educacional , Feminino , Humanos , Masculino , Inquéritos e Questionários , Gravação em Vídeo
13.
Stud Health Technol Inform ; 272: 391-394, 2020 Jun 26.
Artigo em Inglês | MEDLINE | ID: mdl-32604684

RESUMO

Exercise therapy aims to restore normal musculoskeletal function or to reduce pain in patients with musculoskeletal shoulder disorders. Especially during long-term treatments, patients perform unsupervised exercises at home. Harmful movement deviations should be identified and avoided. Assistive technologies based on physical therapists' knowledge can support patients. In this paper, we present our approach to minimize the complexity of a physical therapists' quality assessment of a shoulder exercise performance. Four experienced physical therapists assessed the quality of 13 exercise performances shown as video recordings with a visual analogue scale and explained their ratings as free text. In some cases, the resulting assessments differed widely depending on the respective therapeutic goals. The therapists had difficulties to reduce the performances quality to a single value. Despite the existing consensus on exercises' descriptions, a more than one-dimensional scale is needed to evaluate exercises. Therefore, rating categories have to be identified for more detailed assessments.


Assuntos
Fisioterapeutas , Terapia por Exercício , Humanos , Movimento , Ombro , Gravação em Vídeo
14.
PLoS Comput Biol ; 16(7): e1008002, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-32692770

RESUMO

Ageing affects a wide range of phenotypes at all scales, but an objective measure of ageing remains challenging, even in simple model organisms. To measure the ageing process, we characterized the sequence of alterations of multiple phenotypes at organismal scale. Hundreds of morphological, postural, and behavioral features were extracted from high-resolution videos. Out of the 1019 features extracted, 896 are ageing biomarkers, defined as those that show a significant correlation with relative age (age divided by lifespan). We used support vector regression to predict age, remaining life and lifespan of individual C. elegans. The quality of these predictions (age R2 = 0.79; remaining life R2 = 0.77; lifespan R2 = 0.72) increased with the number of features added to the model, supporting the use of multiple features to quantify ageing. We quantified the rate of ageing as how quickly animals moved through a phenotypic space; we quantified health decline as the slope of the declining predicted remaining life. In both ageing dimensions, we found that short lived-animals aged faster than long-lived animals. In our conditions, for isogenic wild-type worms, the health decline of the individuals was scaled to their lifespan without significant deviation from the average for short- or long-lived animals.


Assuntos
Caenorhabditis elegans/fisiologia , Longevidade , Fenótipo , Algoritmos , Animais , Comportamento Animal , Biomarcadores/metabolismo , Proteínas de Caenorhabditis elegans/metabolismo , Biologia Computacional , Simulação por Computador , Mutação , Estresse Oxidativo , Prognóstico , Análise de Regressão , Reprodutibilidade dos Testes , Estresse Mecânico , Fatores de Tempo , Gravação em Vídeo
15.
Ann Biol Clin (Paris) ; 78(4): 446-448, 2020 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-32627731

RESUMO

Training and education are essential for medical students. During the COVID-19 outbreak, numerous schools and universities have had to close. Ensuring pedagogical continuity requires alternatives to the traditional classroom, especially in medical education. Usual distance learning tools such as videos and downloadable handouts are not sufficient to promote efficient teaching. Distance learning requires self-motivation and does not give you direct access to your instructor. Some students fear the loss of human contact with an instructor - like asking questions during and after class - which promotes learning, understanding and communication. Moreover, classical distance learning methods do not offer immediate feedback that can help students in their understanding of the lecture. In this context, interactive pedagogic tools (IPT) could be useful for medical education continuity and for maintaining human contact necessary in pedagogy. We briefly evaluated interactive pedagogic tool compared to traditionnal distancial tools on medical students. This study showed the importance to have direct contact with a teacher and feedback during a lecture and to not exclusively perform distance learning without direct interaction and feedback. Hence, in the present context, we encourage teacher to use this type of tools to maintain direct interaction with students - which is essential in pedagogy - and ensure a qualitative pedagogical continuity.


Assuntos
Instrução por Computador/métodos , Infecções por Coronavirus/epidemiologia , Educação a Distância/métodos , Educação Médica Continuada/métodos , Pneumonia Viral/epidemiologia , Treinamento por Simulação , Software , Betacoronavirus , Serviços de Laboratório Clínico/organização & administração , Instrução por Computador/normas , Infecções por Coronavirus/prevenção & controle , Surtos de Doenças , Educação a Distância/organização & administração , Educação a Distância/normas , Educação Médica Continuada/organização & administração , Humanos , Internet/organização & administração , Internet/normas , Aprendizagem , Pandemias/prevenção & controle , Pneumonia Viral/prevenção & controle , Aprendizagem Baseada em Problemas/métodos , Aprendizagem Baseada em Problemas/organização & administração , Aprendizagem Baseada em Problemas/normas , Treinamento por Simulação/métodos , Treinamento por Simulação/organização & administração , Treinamento por Simulação/normas , Estudantes de Medicina/psicologia , Estudantes de Medicina/estatística & dados numéricos , Gravação em Vídeo/métodos , Gravação em Vídeo/normas
16.
PLoS One ; 15(7): e0235352, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32649694

RESUMO

Generative adversarial networks (GANs) have been used to obtain super-resolution (SR) videos that have improved visual perception quality and more coherent details. However, the latest methods perform poorly in areas with dense textures. To better recover the areas with dense textures in video frames and improve the visual perception quality and coherence in videos, this paper proposes a multiresolution mixture generative adversarial network for video super-resolution (MRMVSR). We propose a multiresolution mixture network (MRMNet) as the generative network that can simultaneously generate multiresolution feature maps. In MRMNet, the high-resolution (HR) feature maps can continuously extract information from low-resolution (LR) feature maps to supplement information. In addition, we propose a residual fluctuation loss function for video super-resolution. The residual fluctuation loss function is used to reduce the overall residual fluctuation on SR and HR video frames to avoid a scenario where local differences are too large. Experimental results on the public benchmark dataset show that our method outperforms the state-of-the-art methods for the majority of the test sets.


Assuntos
Processamento de Imagem Assistida por Computador/métodos , Gravação em Vídeo/métodos , Percepção Visual/fisiologia , Humanos , Redes Neurais de Computação , Gravação em Vídeo/tendências
18.
Ann Surg ; 272(2): 220-226, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32675485

RESUMO

OBJECTIVE: To develop and evaluate a novel instrument to measure SEVERE processes using video data. BACKGROUND: Surgical video data can serve an important role in understanding the relationship between intraoperative events and postoperative outcomes. However, a standard tool to measure severity of intraoperative events is not yet available. METHODS: Items to be included in the instrument were identified through literature and video reviews. A committee of experts guided item reduction, including pilot tests and revisions, and determined weighted scores. Content validity was evaluated using a validated sensibility questionnaire. Inter-rater reliability was assessed by calculating intraclass correlation coefficient. Construct validity was evaluated on a sample of 120 patients who underwent laparoscopic Roux-en-Y gastric bypass procedure, in which comprehensive video data was obtained. RESULTS: SEVERE index measures severity of 5 event types using ordinal scales. Each intraoperative event is given a weighted score out of 10. Inter-rater reliability was excellent [0.87 (95%-confidence interval, 0.77-0.92)]. In a sample of consecutive 120 patients undergoing gastric bypass procedures, a median of 12 events [interquartile range (IQR) 9-18] occurred per patient and bleeding was the most frequent type (median 10, IQR 7-14). The median SEVERE score per case was 11.3 (IQR 8.3-16.9). In risk-adjusted multivariable regression models, history of previous abdominal surgery (P = 0.02) and body mass index (P = 0.005) were associated with SEVERE scores, demonstrating construct validity evidence. CONCLUSION: The SEVERE index may prove to be a useful instrument in identifying patients with high risk of developing postoperative complications.


Assuntos
Procedimentos Cirúrgicos do Sistema Digestório/métodos , Endoscopia Gastrointestinal/métodos , Complicações Intraoperatórias/diagnóstico , Monitorização Intraoperatória/métodos , Complicações Pós-Operatórias/prevenção & controle , Gravação em Vídeo , Centros Médicos Acadêmicos , Adulto , Anastomose Cirúrgica/efeitos adversos , Anastomose Cirúrgica/métodos , Perda Sanguínea Cirúrgica/prevenção & controle , Estudos de Coortes , Procedimentos Cirúrgicos do Sistema Digestório/efeitos adversos , Endoscopia Gastrointestinal/efeitos adversos , Feminino , Humanos , Complicações Intraoperatórias/prevenção & controle , Modelos Lineares , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Variações Dependentes do Observador , Ontário , Projetos Piloto , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/fisiopatologia , Prognóstico , Estudos Prospectivos , Reprodutibilidade dos Testes , Medição de Risco , Resultado do Tratamento
20.
Artigo em Inglês | MEDLINE | ID: mdl-32610523

RESUMO

OBJECTIVE: To analyze the characteristics of YouTube videos in Spanish on the basic measures to prevent coronavirus disease 2019 (COVID-19). METHODS: On 18 March 2020, a search was conducted on YouTube using the terms "Prevencion Coronavirus" and "Prevencion COVID-19". We studied the associations between the type of authorship and the country of publication with other variables (such as the number of likes and basic measures to prevent COVID-19 according to the World Health Organization, among others) with univariate analysis and a multiple logistic regression model. RESULTS: A total of 129 videos were evaluated; 37.2% were produced in Mexico (25.6%) and Spain (11.6%), and 56.6% were produced by mass media, including television and newspapers. The most frequently reported basic preventive measure was hand washing (71.3%), and the least frequent was not touching the eyes, nose, and mouth (24.0%). Hoaxes (such as eating garlic or citrus to prevent COVID-19) were detected in 15 videos (10.9%). In terms of authorship, papers produced by health professionals had a higher probability of reporting hand hygiene (OR (95% CI) = 4.20 (1.17-15.09)) and respiratory hygiene (OR (95% CI) = 3.05 (1.22-7.62)) as preventive measures. CONCLUSION: Information from YouTube in Spanish on basic measures to prevent COVID-19 is usually not very complete and differs according to the type of authorship. Our findings make it possible to guide Spanish-speaking users on the characteristics of the videos to be viewed in order to obtain reliable information.


Assuntos
Controle de Doenças Transmissíveis/métodos , Infecções por Coronavirus/prevenção & controle , Educação em Saúde/normas , Pandemias/prevenção & controle , Pneumonia Viral/prevenção & controle , Mídias Sociais , Gravação em Vídeo , Betacoronavirus , Estudos Transversais , Decepção , Higiene das Mãos , Humanos , Idioma , Meios de Comunicação de Massa , México , Espanha
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