Repositório RCAAP

Citizen science and participatory science communication: an empirically informed discussion connecting research and theory

Citizen Science is believed to contribute significantly to the democratisation of science, engaging non-scientists in scientific research. Participatory approaches to science communication share the same interest through public participation and public engagement. In the attempt to connect these two debates both theoretically and empirically, we provide an analysis of the communication tools and strategies used by 157 Citizen Science projects across the EU, UK, and Switzerland. Our analysis reports that the CS projects surveyed tend to interpret communication as a disseminating activity, rather than as a tool to promote appropriate communication-based encounters with both project participants and other potential target audiences.

Ano

2025-10-28T12:23:01Z

Creators

Giardullo, Paolo Neresini, Federico Marín-González, Esther Luís, Cristina Magalhães, Joana Arias, Rosa

Mobile Web Accessibility Evaluation

This work presents an approach to mobile Web accessibility evaluation allowing for Web content accessibility and mobile adequacy assessment, regarding different selectable disability profiles. We propose an extension to existing methodologies in order to fully encompass a thorough integration of mobile and accessibility guidelines within specific impairments perspectives and a prototype that serves as a proof of concept tool for that methodology. The integrated guidelines include MWBP and WCAG recommendations. It is well known that these sets overlap. Some subsets of MWBP should always be considered regardless of the users’ special needs, other are relevant for specific disability types. We claim that when specific disabilities are addressed some MWBP might become irrelevant. We developed a proof of concept tool, MWAAT, which fully addressed the basic concepts of the proposed methodology. Its analysis, design and the most relevant implementation aspects are presented in this dissertation. Regarding the development perspective, MWAAT adopts a very flexible approach envisioning its future integration into the ACCESSIBLE project platform and its potential extension into other guideline sets and alternative scenarios. As other available tools, it offers mechanisms for WCAG assessment or MWBP evaluation in an independent manner. However, unlike any other, it permits the evaluation of Web content through an adequate combination of both guidelines sets, as a whole, or more importantly, for a specific disability. As such, it provides a powerful mechanism to Web content developers and most notably to consolidate the selective disability assessment approach. This dissertation illustrates these capabilities through representative case studies. The results herein shown reveal not only the assessment differences between desktop and mobile content, but also the difference between these at the impairment level.

Ano

2025-10-28T12:29:40Z

Creators

Bandeira, António Rogério Crisóstomo de Campos

Comunicação nos museus portugueses no século XXI

Esta dissertação assume o título, Comunicação nos Museus Portugueses no século XXI, e abre espaço para a reflexão e discussão de novos meios do museu fazer cumprir a sua missão. O museu é parte importante do quotidiano da sociedade, desde muito cedo se percebeu que o seu carater educativo é extremamente importante no que toca ao desenvolvimento de uma consciência coletiva. Nesse sentido, a sociedade no século XXI parece precisar cada vez mais dessa construção de consciência coletiva, mas hoje o museu enfrenta uma barreira que cresceu com o desenvolvimento da sociedade, o digital. O digital foi encarado por muitos como o fim do museu físico e a adesão às novas tecnologias/projetos, como o museu virtual, e/ou abertura às várias ferramentas digitais, como as redes sociais, foram sempre recusadas. No entanto, o que iremos analisar são as várias transformações que o desenvolvimento da sociedade e o digital tiveram no museu, começando pela própria definição de museu e acabando na análise de vários museus e o seu uso atual das ferramentas digitais. Na presente dissertação refletimos sobre o que poderá ser o museu virtual, que vantagens e desvantagens existem para o museu enquanto instituição cultural, mas também analisamos vários componentes que poderão vir a fazer parte da educação nesta temática, como a curadoria digital e a inclusão de ferramentas como a Blockchain e NFT’s, que se revelaram relevantes para a construção do museu virtual.

Ano

2025-10-28T12:12:52Z

Creators

Almeida, Alexandra Francisca Ponte Melo

Cuidados paliativos nas unidades de cuidados intensivos

Introdução: Os cuidados paliativos são cuidados de saúde especializados para pessoas com doenças graves e/ou avançadas e progressivas, sendo transversais a todas as áreas de cuidados. São cada vez mais reconhecidos como componente integral na abordagem de doentes críticos, intervindo em aspetos como: a prevenção e alívio do sofrimento físico, psicológico, social e espiritual dos doentes e famílias; a adequação dos objetivos dos cuidados de acordo com a condição clínica, o prognóstico e as necessidades dos doentes; a comunicação empática e gestão das expectativas. Objetivos: Pretende-se com este trabalho salientar a evidência atual no que concerne à identificação precoce dos doentes com necessidades paliativas, às particularidades da abordagem destes doentes, às principais estratégias na tomada de decisão e comunicação entre profissionais de saúde, doentes e familiares, e à perspetiva dos intensivistas acerca da integração desta área nas unidades de cuidados intensivos. Material e métodos: Revisão narrativa da literatura mais recente referente à aplicação dos cuidados paliativos nas unidades de cuidados intensivos, priorizando as guidelines internacionais e artigos de revisão. Resultados: Foram identificados 18 artigos considerados pertinentes para esta revisão, incluindo oito revisões sistemáticas, oito revisões narrativas, um questionário e um consenso. Discussão: Esta revisão narrativa realça a importância dos Cuidados Paliativos na abordagem de sintomas, na comunicação e na tomada de decisão partilhada assim como as estratégias e o impacto da sua implementação nas Unidades de Cuidados Intensivos. Conclusão: A integração dos cuidados paliativos nas Unidades de Cuidados Intensivos é um processo que poderá melhorar a qualidade dos cuidados, diminuir a mortalidade e os custos económicos, e aumentar os níveis de satisfação dos profissionais de saúde, doentes e famílias.

Ano

2025-10-28T12:17:46Z

Creators

Correia, João Tiago Reis Dias

Encefalopatia hepática recorrente em doente com cirrose hepática alcoólica : um caso incomum

A cirrose hepática e as suas complicações têm um impacto considerável na saúde do doente e em qualquer sistema de saúde. A encefalopatia hepática manifesta-se através de défices cognitivos e distúrbios da função neuromuscular que podem ser impercetíveis ou mínimos, apenas demonstrando resultados anormais em testes neurofisiológicos ou psicométricos; ou que podem ser clinicamente evidentes e severos, manifestando alterações da linguagem e do humor, asterixis, desorientação espacial e temporal, ou mesmo coma. A fisiopatologia da encefalopatia hepática não é ainda totalmente compreendida, mas sabe-se que a hiperamoninémia está intimamente ligada à origem dos sintomas neurológicos. Entender o papel da amónia e dos outros componentes na encefalopatia hepática, e a sua relação com as alterações da microbiota intestinal, tem sido importante para o tratamento da encefalopatia hepática. Este trabalho reporta o caso clínico de um doente com cirrose hepática alcoólica com trombose crónica da veia porta que desenvolveu episódios recorrentes de descompensação sob a forma de encefalopatia hepática, apesar de pertencer habitualmente à classe de Child-Pugh A nos intervalos entre os episódios de encefalopatia hepática. O manejo de encefalopatia hepática assenta sobre a identificação e controlo de fatores precipitantes, hidratação, e o recurso a fármacos, como a lactulose e rifaximina, para o controlo de fase aguda e como profilaxia secundária contra novos e mais severos episódios de encefalopatia hepática. A avaliação imagiológica é importante no despiste de shunts portossistémicos como causa da encefalopatia hepática, como é o caso do shunt esplenorrenal. Além da terapêutica farmacológica, medidas mais invasivas, como a embolização do shunt esplenorrenal, poderão ser equacionadas nos doentes com encefalopatia hepática grave recorrente sem outro fator desencadeante identificado.

Ano

2025-10-28T12:23:01Z

Creators

Cafôfo, João Valentim Fernandes

Terapêutica da nefrite da vasculite IgA em idade pediátrica

A vasculite a imunoglobulina A (VIgA), anteriormente designada púrpura de Henoch- Schönlein ou púrpura anafilactóide, é a vasculite sistémica mais prevalente na criança. É uma vasculite imunomediada, com depósitos imunes de IgA individualizados nos pequenos vasos, sobretudo da pele, articulações, trato gastrointestinal e rim. A tétrade clássica de manifestações clínicas inclui: púrpura, artralgia/artrite, dor abdominal e compromisso renal. A nefrite da VIgA (NVIgA) surge num quinto a metade dos casos e, embora menos frequente que as outras manifestações clínicas, surge habitualmente no primeiro mês após o início da doença, e é potencialmente mais grave e mais prevalente na criança mais velha e no adulto. A terapêutica da NVIgA não é consensual, sendo convicção generalizada a necessidade de ensaios multicêntricos, prospetivos, randomizados e controlados. Apresentamos uma revisão da literatura sobre a NVIgA, com enfoque muito especial nas controvérsias e perspetivas atuais do seu tratamento.

Ano

2025-10-28T12:19:23Z

Creators

Abecasis, Jorge Maria Castela Ferreira Saldanha

Uso da inteligência artificial (IA) na retinopatia diabética vs diagnóstico convencional : revisão sistemática e meta-análise

Introdução: A retinopatia diabética (RD) é uma manifestação oftalmológica da diabetes mellitus e uma das principais causas de perda de visão à volta do mundo. Com a recente evolução da tecnologia na área da saúde, a inteligência artificial (IA) tem assumido um papel determinante, especialmente neste caso. Assim, foi feita uma revisão sistemática e meta-análise com o propósito de avaliar a capacidade diagnóstica destas IA’s nas vertentes de RD referenciável (RDR), RD com risco de perda de visão (VTDR) e em qualquer tipo de RD. Métodos: Uma pesquisa sistemática da literatura foi realizada na base de dados PubMed. O processo de seleção dos artigos foi feito até à data de 2 de abril de 2021, sendo que foram incluídos somente estudos que fizessem a comparação entre a graduação feita por IA’s e a graduação manual para diagnóstico de retinopatia diabética. Utilizou-se o software Covidence para a triagem e extração dos dados e a ferramenta STROBE para análise da qualidade dos estudos. Resultados: Quinze artigos foram incluídos na revisão sistemática por preencherem os critérios de inclusão. A meta-análise realizada mostrou através do common effect uma sensibilidade e especificidade de 89% e 86% para RDR, respetivamente; 100% e 92% para VTDR, respetivamente; 90% e 73% para qualquer tipo de RD, respetivamente. Não foram calculados valor preditivo positivo e negativo por não haver dados suficientes que permitissem o cálculo. Conclusão: Os achados do nosso estudo demonstraram que as IA’s tiveram alta sensibilidade, bem como especificidade para detetar RD, sobretudo nas categorias mais graves, o que significa que há uma abertura para implementar estes sistemas autónomos como métodos de rastreio auxiliares dos oftalmologistas, tendo como objetivos otimizar fluxos e acelerar o tempo de triagem, sem pôr em causa a precisão no diagnóstico da retinopatia diabética.

Ano

2025-10-28T12:28:20Z

Creators

Ferrão, Jorge Miguel Nevado Guerra Salgueiro

Caraterísticas histopatológicas das células folículo-estreladas em hipófises de ratos wild type, obesos e high-fat diet induzidos

A hipófise anterior regula mecanismos tão vastos como o crescimento, o metabolismo ou a reprodução, através da secreção hormonal. As células folículo-estreladas (CFE), células não endócrinas situadas entre as células produtoras de hormonas da hipófise anterior, têm uma função ainda pouco conhecida. Apesar de tudo, com a sua organização em rede, parecem ter um importante papel na regulação e manutenção da população de células hormonais. Neste trabalho, o primeiro do género de que há registo, 33 hipófises de três grupos de ratinhos (18 wild type [WT], 11 geneticamente obesos [OB] e 4 sob uma dieta rica em ácidos gordos [HFD]) foram analisadas de forma a avaliar se existiria alguma relação entre o número de CFE e as alterações do metabolismo basal de cada grupo de ratinhos. Recorreu-se à marcação imunohistoquímica pela proteína S-100, a técnicas de imunofluorescência e ao software Image-J para se conseguir calcular a percentagem de CFE presentes em cada amostra. Chegou-se à conclusão de que, apesar de não se notarem diferenças significativas entre os ratinhos WT e OB, o grupo de ratinhos HFD teria uma percentagem de CFE significativamente superior aos outros dois grupos. Isto pode sugerir uma relação ainda desconhecida entre a dieta, em concreto uma dieta rica em ácidos gordos, e a apresentação de CFE na hipófise anterior. Os mecanismos e consequências fisiológicas subjacentes a esta alteração deverão, por isso, ser estudados, por forma a obter um maior esclarecimento da temática.

Ano

2025-10-28T12:27:13Z

Creators

Melo, José Filipe Ferreira Soares de

Lead in liver and kidney of exposed rats: aging accumulation study

The concentration of lead in liver and kidneys of Wistar rats, fed with lead since fetal period in relation to their age and to a control group, was determined. A group of rats was exposed to lead acetate (n=30) in drinking water and the other group was exposed to normal water (n=20). Samples were collected from rats aging between 1 and 11 months and were analyzed by Energy Dispersive X-ray Fluorescence (EDXRF) without any chemical preparation. The EDXRF results were assessed by the PIXE (Proton Induced X-ray Emission) technique. The formaldehyde used to preserve the samples was also analyzed by ETAAS (Electro-Thermal Atomic Absorption Spectrometry) in order to verify if there was any loss of lead from the samples to the formaldehyde. We found that the loss was not significant (<2%). Concerning the mean values of the lead concentration measured in the contaminated soft tissues, in liver they range from 6 to 22μgg(-1), and in kidneys from 44 to 79μgg(-1). The control rats show, in general, values below the EDXRF detection limit (2μgg(-1)). The ratio kidney/liver ranges from 2 to 10 and is strongly positively correlated with the age of the animals. A Spearman correlation matrix to investigate the correlation between elemental concentrations and the dependence of these concentrations with age showed that there is a strong positive correlation with age for lead in the liver but not in the kidney. The correlation matrix showed also that the concentration of lead in these two soft tissues is not correlated. The lead accumulation in liver is made by different plateaus that strongly decrease with age. It was verified the existence of two levels of accumulation in kidney, not very highlighted, which might be indicative of a maximum accumulation level for lead in kidney.

Ano

2025-10-28T12:22:21Z

Creators

Guimarães, Diana Carvalho, Maria Luisa Geraldes, Vera Rocha, Isabel Alves, Luís Cerqueira Santos, José Paulo

Study of lead accumulation in bones of Wistar rats by X-ray fluorescence analysis: aging effect

The accumulation of lead in several bones of Wistar rats with time was determined and compared for the different types of bones. Two groups were studied: a control group (n = 20), not exposed to lead and a contaminated group (n = 30), exposed to lead from birth, first indirectly through mother's milk, and then directly through a diet containing lead acetate in drinking water (0.2%). Rats age ranged from 1 to 11 months, with approximately 1 month intervals and each of the collections had 3 contaminated rats and 2 control rats. Iliac, femur, tibia-fibula and skull have been analysed by Energy Dispersive X-ray Fluorescence Technique (EDXRF). Samples of formaldehyde used to preserve the bone tissues were also analysed by Electrothermal Atomic Absorption (ETAAS), showing that there was no significant loss of lead from the tissue to the preservative. The bones mean lead concentration of exposed rats range from 100 to 300 μg g(-1) while control rats never exceeded 10 μg g(-1). Mean bone lead concentrations were compared and the concentrations were higher in iliac, femur and tibia-fibula and after that skull. However, of all the concentrations in the different collections, only those in the skull were statistically significantly different (p < 0.05) from the other types of bones. Analysis of a radar chart also allowed us to say that these differences tend to diminish with age. The Spearman correlation test applied to mean lead concentrations showed strong and very strong positive correlations between all different types of bones. This test also showed that mean lead concentrations in bones are negatively correlated with the age of the animals. This correlation is strong in iliac and femur and very strong in tibia-fibula and skull. It was also shown that the decrease of lead accumulation with age is made by three plateaus of accumulation, which coincide, in all analysed bones, between 2nd-3rd and 9th-10th months.

Ano

2025-10-28T12:14:15Z

Creators

Guimarães, Diana Carvalho, Maria Luisa Geraldes, Vera Rocha, Isabel Santos, José Paulo

Acute vagal modulation of electrophysiology of the atrial and pulmonary veins increases vulnerability to atrial fibrillation

Vagal activity is thought to influence atrial electrophysiological properties and play a role in the initiation and maintenance of atrial fibrillation (AF). We evaluated the effects of acute vagal stimulation on atrial conduction, refractoriness of atrial and pulmonary veins (PVs) and inducibility of AF. An open-chest epicardial approach was performed in New Zealand White rabbits with preserved autonomic innervation. Atrial electrograms were obtained with four unipolar electrodes placed epicardially along the atria (n = 22) and an electrode adapted to the proximal left PV (n = 10). The cervical vagus nerve was stimulated with bipolar platinum electrodes (20 Hz). Epicardial activation was recorded in sinus rhythm, and effective refractory periods (ERPs), dispersion of refractoriness and conduction times from high-lateral right atrium (RA) to high-lateral left atrium (LA) and PVs assessed at baseline and during vagal stimulation. Burst pacing (50 Hz, 10 s), alone or combined with vagal stimulation, was applied to the right (RAA) and left atrial appendage (LAA) and PVs to induce AF. At baseline, ERPs were lower in PVs than in LA and LAA, but did not differ significantly from RA and RAA, and there was a significant delay in the conduction time from RA to PVs compared with the activation time from RA to LA (P < 0.01). During vagal stimulation, ERP decreased significantly at all sites, without significant differences in the dispersion of refractoriness, and the atrial conduction times changed from 39 ± 19 to 49 ± 9 ms (RA to PVs; n.s.) and from 14 ± 7 to 28 ± 12 ms (RA to LA; P = 0.01). Induction of AF was reproducible in 50% of cases with 50 Hz and in 82% with 50 Hz combined with vagal stimulation (P < 0.05). During vagal stimulation, AF cycle length decreased at all sites, and AF duration changed from 1.0 ± 0.9 to 14.0 ± 10.0 s (P < 0.01), with documentation of PV tachycardia in three cases. In 70% of the animals, AF ceased immediately after interruption of vagal stimulation. We conclude that in the intact rabbit heart, vagal activity prolongs interatrial conduction and shortens atrial and PV ERP, contributing to the vulnerability to the induction and maintenance of AF. This model may be useful in the assessment of the autonomic influence in the mechanisms underlying AF.

Ano

2025-10-28T12:16:21Z

Creators

Oliveira, Mario da Silva, M. Nogueira Geraldes, Vera Xavier, Rita Laranjo, Sergio Silva, Vitor Postolache, Gabriela Ferreira, Rui Rocha, Isabel

Landscape perception as a basis for landscape strategies. Developments in Portugal

The perception of landscape and its transformation underpins the process of socio-ecological awareness that is essential to a healthy relationship between Humans and Nature. One of the great challenges to contemporary and future society is the vital need to increase knowledge and awareness of the development model that has led us to the global ecological crisis that we face today. We know that resources may become scarce if we continue to consume them at the current rate, especially if the rise in atmospheric temperature exceeds certain limits. The landscape reflects this economic model and the decisions that are taken on the territory. Different expressions may be used depending on the scale and intensity of the transformation that has occurred as the landscape is a resource that is essential not only to the development of economic activities but also to the qualification of the territory and the well-being of the population (Cassatella and Peano, 2011). In Portugal, the result of two critical trends can be observed in the landscape - the depopulation of rural areas with the consequent concentration of population in urban settlements influenced by the coastline, and the inevitable simplification of the agricultural and forest cultural mosaics.

Ano

2025-10-28T12:17:59Z

Creators

Oliveira, Rosário

Módulo de planeamento do processo de gestão no SIAG-AP

Este documento descreve o trabalho realizado no âmbito da disciplina de Projecto em Engenharia Informática do Mestrado em Engenharia Informática da Faculdade de Ciências da Universidade de Lisboa. Este projecto, desenvolvido na GEDI S.A., teve como principal objectivo criar uma ferramenta que auxilie as organizações na tomada de decisões de maneira a melhorar o seu desempenho no negócio. A técnica utilizada para se conseguir isto denomina-se BPM (Business Performance Management). É uma técnica que se pode considerar uma evolução dos sistemas de BI (Business Intelligence) convencionais. O projecto foi desenvolvido utilizando um conjunto de frameworks open source, sendo a linguagem de programação base o JAVA, na plataforma J2EE, e para as camadas de interface, negócio e dados: Struts ou JavaServer Pages, Spring e Hibernate correspondentemente. Para auxiliar no desenho de gráficos foi usada a ferramenta FusionCharts em conjunto com o Java. Foi ainda utilizada a tecnologia JavaServer Faces para a parte de forecasting do projecto. A ferramenta desenvolvida funciona de forma integrada com o sistema SIAG-AP (Sistema Integrado de Apoio à Gestão para a Administração Pública) desenvolvido pela GEDI.

Ano

2025-10-28T12:17:04Z

Creators

Rodrigues, Nuno Pombo

O treino de ortostatismo (tilt training) aumenta a reserva vasoconstritora em doentes com síncope reflexa neurocardiogénica

Neurocardiogenic syncope (NCS) is a common clinical entity resulting from an excessive reflex autonomic response, particularly during orthostatism. Treatment options are controversial and of limited effectiveness. Tilt training (TT) is a promising option to treat these patients. However, its mechanism of action and clinical impact remain unclear. Objective: To characterize hemodynamic and autonomic responses during a TT program in patients with NCS refractory to conventional measures. Methods: We studied 28 patients (50% male, mean age 41±14 years) without structural heart disease, with NCS documented by tilt testing. The TT program included 9 tilt sessions (3 times a week, 30 min) (60° - 6 sessions, 70° - 3 sessions), under ECG and blood pressure monitoring combined with home orthostatic self-training and 10° head-up during sleep. Systolic volume, cardiac output, total peripheral resistance, baroreflex sensitivity and heart-rate variability were computed. Patients were reassessed at 1 month and every 6 months for a maximum of 36 months (24±12 months). Results: Over the course of the TT program there was a significant increase in total peripheral resistance (1485±225 vs. 1591±187 dyn·s·cm(-5), p<0.05), with a decrease in standard deviation (206±60 vs. 150±42, p<0.05). During follow-up, syncope recurred in five patients (19%), with a significant reduction in the number of episodes (4.0±3.2/patient in the 12 months before TT vs. 1.4±0.8/patient post-TT, p<0.05). Conclusion: In refractory NCS, TT may be an effective therapeutic option, with long-term benefits. These results appear to be due to an increase in vasoconstrictor reserve combined with a reduction in its variance.

Ano

2025-10-28T12:27:13Z

Creators

Laranjo, Sergio Oliveira, Mario Tavares, Cristiano Geraldes, Vera Santos, Sofia Oliveira, Eunice Ferreira, Rui Rocha, Isabel

COVID-19, wellness and life satisfaction in adolescence: individual and contextual issues

Abstract: During and in the aftermath of the COVID-19 pandemic, several works reflected on young people’s physical and psychological health. The Dual Factor Model, which we refer to as the quadripartite model, is useful for understanding children’s and adolescents’ psychological health and differentiating them regarding their attitude toward the effects of the COVID-19 pandemic. In this investigation, students from the fifth to twelfth year of schooling enrolled in the DGEEC study “Psychological Health and Wellbeing in Portuguese schools” were considered. Four groups were created based on life satisfaction (low or high) and psychological distress (with or without symptoms). The study included 4444 students (M = 13.39 years ± 2.41), of whom 47.8% were male. Of the participants, 27.2% were in the second cycle of primary education, and 72.8% were in lower and upper secondary education. Differences in gender and education level (as a proxy for age) were observed. Additionally, when considering students’ perceptions of changes in their lives following the COVID-19 pandemic (stayed the same, became worse, became better), these three groups were compared concerning personal and contextual variables, revealing significant differences at both the individual and contextual levels. Finally, the study discusses the influence of education and health professionals and the need for friendly public policies.

Ano

2025-10-28T12:22:21Z

Creators

Matos, Margarida Gaspar de Carvalho, Marina Branquinho, Cátia Sofia dos Santos Noronha, Catarina Moraes, Bárbara Gaspar, Tania Guedes, Fábio Botelho Cerqueira, Ana Santos, Osvaldo Rodrigues, Nuno Neto

ISBE & Cochrane Portugal Newsletter nº 242: Opções farmacológicas para o tratamento da diabetes tipo 2 em adultos

Esta Newsletter (NL) resulta de uma parceria entre o Instituto de Saúde Baseada na Evidência e a Cochrane Portugal, e tem como objectivo disponibilizar informação sobre áreas importantes para a prática clínica, com base na melhor evidência científica disponível. São incluídos estudos relevantes, criticamente avaliados pela sua validade, importância dos resultados e aplicabilidade prática, resumidos numa óptica de suporte à decisão. É dada prioridade a estudos de causalidade incluindo-se ainda, quando justificado, estudos qualitativos e metodológicos, assim como revisões científicas. O conteúdo da NL é da exclusiva responsabilidade do(s) seu(s) autor(es).

Ano

2025-10-28T12:16:21Z

Creators

Carneiro, António Vaz Rachadell, Juan Lupi Manso, Nuno

Youth voices and social participation during a pandemic: dream teens powered by Jovem Cascais

In an unprecedented scenario, much of the research and interventions during the COVID-19 pandemic, which focused on young people, found themselves suspended. (1) Background: The goals of this project were to investigate (Study 1) social participation and positive development among young people in Cascais, Portugal, and to investigate (Study 2-a case study) the implementation of a program promoting active citizenship, social participation, and social entrepreneurship. At the same time, it was intended to constitute a resource and strategy to diminish the social alienation exacerbated by the pandemic. (2) Methods: SPSS v.26 software was used to analyze quantitative data from questionnaires used in the study of social participation, as well as the pre- and post-test impacts, and MAXQDA 2020 software was used to analyze qualitative data from YouTube discussions about youth needs and strategies for their problems, as well as from focus groups. (3) Results: In S1, it was evident that young people’s expectations of participation in the community were not defined and that their expected participation in the community was of a weekly nature. They considered themselves to have a good sense of belonging to the community or group and had reasonable social self-efficacy. Girls showed higher scores in Expectations of Community Participation and Active Participation. In their positive development, they did not have a defined evaluation of their competence, but their connection with others was evaluated as good. Boys showed higher levels of Competence. They said that every week they make 1 h of their day available to help others, and they did not frequently report feelings of social alienation. In S2, the evaluation of the impact of the project generally showed an improvement in the action research skills of the participants. At the end, six projects were proposed. In the analysis of the participants’ voices, the themes related to Substance Use, Social Capital, and Love and Sexuality stood out with higher participation and lower participation in the themes of Diversity, Culture and Housing. (4) Conclusions: The results suggest a need to encourage social participation, active citizenship, and entrepreneurship, along with their knowledge and skills for action. The promotion of debate and knowledge on issues related to young people’s lives seems to be a priority, especially issues related to Diversity, Culture and Housing. The Dream Teens model may prove to be an important strategy in this work, suggesting that this project may constitute a relevant model for future work.

Ano

2025-10-28T12:24:33Z

Creators

Branquinho, Cátia Sofia dos Santos Silva, Sara Santos, Joana Martins, Inês Sousa Gonçalves, Catarina Noronha, Catarina Gaspar, Tania Matos, Margarida Gaspar de

Determinants associated with uncontrolled asthma in Portugal: a national population-based study

Introduction and objectives: Asthma is a chronic and heterogeneous disease that affects people of all ages and has a high estimated increase in prevalence worldwide. Asthma control represents a main goal in the disease management. International studies revealed low levels of disease control resulting in a significant burden for healthcare systems, not only in terms of quality of life, but also in terms of health costs. Modifiable and non-modifiable factors have been identified as relating to poor asthma control level. In this study we evaluated the distribution of asthma control levels in Portuguese adult population and examine the determinants associated with uncontrolled asthma. Materials and methods: Using a similar methodology to the one employed in the Asthma Insights and Reality in Europe (AIRE) survey, 327 active asthmatic patients were identified by random phone number and completed a questionnaire during 2011 to 2012. Asthma control was assessed by the evaluation of GINA based symptom control, by Asthma Control Test.äó (ACT) and by self-perception of control. To examine the relationship between uncontrolled asthma and its determinants, univariate logistic regression analysis, sequential multivariable regression and population attributable risk percentage were determinate. Results: 35.2% active asthmatic patients had uncontrolled asthma, 64.8% partially controlled and none of the individuals had total control of asthma assessed by ACT test. Factors significantly associated with poor asthma control scores were: age (OR 1.02 per year of age; 95% CI: 1.01.Çô1.03), female sex (OR 1.87; 95% CI: 1.15.Çô3.04), educational level (OR 0.5; 95% CI: 0.28.Çô0.89 at high school level or over), occupation (OR 4.92; 95% CI: 2.12.Çô11.42 if looking for a first job or unemployed) (OR 2.51; 95% CI: 1.35.Çô4.65 if being retired), income (OR 0.23; 95% CI: 0.07.Çô0.72 if >619 euros), BMI (OR 1.09 per BMI unit; 95% CI: 1.03.Çô1.14), having rhinitis symptoms (OR 4.40; 95% CI: 2.56.Çô7.58) and using inhaled corticosteroids (OR 0.44; 95%CI: 0.24.Çô0.82 if used in the past or never used). Looking for a first job or being unemployed, BMI and having rhinitis symptoms remained significant after multivariate adjustments. Conclusions: Uncontrolled asthma was associated with several determinants. Their identification can contribute to improve asthma care both from clinical and from public health perspectives.

Ano

2025-10-28T12:12:26Z

Creators

Camarinha, Catarina Fernandes, Milene Alarcão, Violeta Franco, João Manaças, M. E. Bárbara, Cristina Nicola, Paulo

Usefulness of a clinicopathological classification in predicting treatment-related outcomes and multimodal therapeutic approaches in pituitary adenoma patients: retrospective analysis on a Portuguese cohort of 129 patients from a tertiary pituitary center

Purpose: A clinicopathological classification has been designed to predict recurrence/progression in patients with pituitary adenomas (PAs). We aimed to study its usefulness in predicting PAs that will have a challenging disease course and may require more often complex multimodal and multiple therapeutic approaches. Methods: Retrospective analysis of 129 patients with PAs operated in our institution between 2001 and 2020 (84 non-clinically functioning PAs, 32 acromegaly, 9 Cushing's disease, 2 prolactinomas and 2 thyrotropinomas). Grading was based on invasion and proliferation: 1a (non-invasive, non-proliferative; n = 59), 1b (non-invasive, proliferative; n = 17), 2a (invasive, non-proliferative; n = 38), and 2b (invasive, proliferative; n = 15). Results: Of the 129 patients, 68 (52.7%) were females, and the mean age at diagnosis was 53.7 ± 15.4 years. The mean follow-up duration was 93.1 ± 61.8 months. Grade 2b PAs when compared to other grades (2b-2a-1b-1a) had significantly higher rates of persistent tumor remnant within 1-year after operation (93-78-18-30%; p < 0.001), active disease at last follow-up (40-27-12-10%; p = 0.004), re-operation (27-16-0-5%; p = 0.023), irradiation (53-38-12-7%; p < 0.001), multimodal treatment (67-49-18-25%; p = 0.003), multiple treatment (33-27-6-9%; p = 0.017). Patients with grade 2b PAs also required a higher mean number of treatments (2.6-2.1-1.2-1.4; p < 0.001). Conclusions: This clinicopathological classification appears to be a useful grading system to identify PAs that may be more refractory and more often require complex multimodal and multiple therapeutic approaches. Invasive PAs, especially grade 2b tumors, may be more likely to need complex treatment approach, including radiotherapy, and may display higher rates of active disease at last follow-up, despite receiving higher number of treatments.

Ano

2025-10-28T12:24:33Z

Creators

Peixe, Carolina Alexandre, Maria Inês Gomes, Ana Raquel Nobre, Ema Silva, Ana Luísa Oliveira, Tiago Lopez-Presa, Dolores Faria, Claudia Miguens, José Bugalho, Maria João Marques, Pedro

Machine learning prediction of mortality in acute myocardial infarction

Background: Acute Myocardial Infarction (AMI) is the leading cause of death in Portugal and globally. The present investigation created a model based on machine learning for predictive analysis of mortality in patients with AMI upon admission, using different variables to analyse their impact on predictive models. Methods: Three experiments were built for mortality in AMI in a Portuguese hospital between 2013 and 2015 using various machine learning techniques. The three experiments differed in the number and type of variables used. We used a discharged patients' episodes database, including administrative data, laboratory data, and cardiac and physiologic test results, whose primary diagnosis was AMI. Results: Results show that for Experiment 1, Stochastic Gradient Descent was more suitable than the other classification models, with a classification accuracy of 80%, a recall of 77%, and a discriminatory capacity with an AUC of 79%. Adding new variables to the models increased AUC in Experiment 2 to 81% for the Support Vector Machine method. In Experiment 3, we obtained an AUC, in Stochastic Gradient Descent, of 88% and a recall of 80%. These results were obtained when applying feature selection and the SMOTE technique to overcome imbalanced data. Conclusions: Our results show that the introduction of new variables, namely laboratory data, impacts the performance of the methods, reinforcing the premise that no single approach is adapted to all situations regarding AMI mortality prediction. Instead, they must be selected, considering the context and the information available. Integrating Artificial Intelligence (AI) and machine learning with clinical decision-making can transform care, making clinical practice more efficient, faster, personalised, and effective. AI emerges as an alternative to traditional models since it has the potential to explore large amounts of information automatically and systematically.

Ano

2025-10-28T12:12:26Z

Creators

Oliveira, Mariana Seringa, Joana Pinto, Fausto J. Henriques, Roberto Magalhães, Teresa