Percorrer por autor "Rodrigues, Pedro"
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- Anatomy Studio: A tool for virtual dissection through augmented 3D reconstructionPublication . Zorzal, Ezequiel R.; Sousa, Maurício; Mendes, Daniel; Anjos, Rafael Kuffner dos; Medeiros, Daniel; Paulo, Soraia Figueiredo; Rodrigues, Pedro; Mendes, José João; Delmas, Vincent; Uhl, Jean-François; Mogorrón, José; Jorge, Joaquim Armando; Lopes, Daniel Simões"3D reconstruction from anatomical slices allows anatomists to create three dimensional depictions of real structures by tracing organs from sequences of cryosections. However, conventional user interfaces rely on single-user experiences and mouse-based input to create content for education or training purposes. In this work, we present Anatomy Studio, a collaborative Mixed Reality tool for virtual dissection that combines tablets with styli and see-through head-mounted displays to assist anatomists by easing manual tracing and exploring cryosection images. We contribute novel interaction techniques intended to promote spatial understanding and expedite manual segmentation. By using mid-air interactions and interactive surfaces, anatomists can easily access any cryosection and edit contours, while following other user’s contributions. A user study including experienced anatomists and medical professionals, conducted in real working sessions, demonstrates that Anatomy Studio is appropriate and useful for 3D reconstruction. Results indicate that Anatomy Studio encourages closely-coupled collaborations and group discussion, to achieve deeper insights."
- Autologous graft in the anterior maxilla : a case reportPublication . Vaz, Rodolfo; Gameiro, Pedro; Sottomayor, Pedro; Saldanha, Bernardo; Rodrigues, PedroA 44-year-old male patient was referred to the Egas Moniz Dental Clinic, with a previous history of failed bone regeneration, resulting in a reduced buccal-palatal bone thickness and aesthetic compromise of the gingival margin of the anterior maxilla. Since the use of autologous bone is considered the “gold-standard” in guided bone regeneration, the treatment plan consisted of an autologous mental graft into the maxilla, with a simultaneous guided bone regeneration with a xenograft and absorbable membrane. This allowed a predictable volumetric bone regeneration with low patient morbidity and posterior fixed rehabilitation.
- Evaluation of the quality of life before and after rehabilitation with dental implants: a pilot studyPublication . Troles, Tiago Pereira; Godinho, Catarina; Proença, Luís; Rodrigues, Pedro; Mendes, José João
- External approach to bilaterally septated maxillary sinuses: a case reportPublication . Gameiro, Pedro; Saldanha, Bernardo; Santos, Francisco; Silva, Jéssica; Norte, João; Reis, João; Sottomayor, Pedro; Vaz, Rodolfo; Rodrigues, PedroThe careful planning of a sinus lift procedure is the key to avoiding surgical complications. In this clinical case, a female patient, 59 years old and totally edentulous in the maxilla, was referred to Egas Moniz’s Dental Clinic Implantology consultation with indication for bilateral external sinus lift of the maxillary sinuses prior to implant placement. Both orthopantomography and cone-beam computed tomography were used to show the anatomy of the maxillary sinuses, which presented multiple sinus septa. A multiple anterolateral window approach was applied in order to avoid perforation of the Schneiderian membrane while accessing it.
- GC-MS – Still standing for clinical and forensic analysis: validation of a multidrug method to detect and quantify illicit drugsPublication . Ferreira, Ana Beatriz; Castro, André Lobo; Tarelho, Sónia; Rodrigues, Pedro; Franco, João MiguelAn SPE-GC-MS analytical method using whole blood samples has been developed and validated to detect and quantify nineteen compounds belonging to the Drugs of Abuse (DA) groups of cocaine and metabolites, opiates and new psychoactive substances (NPS). The method detailed here is necessary because the recreational consumption of these DA has increased considerably in recent years and poly-drug-consumption is now very common. The method developed was both specific and selective. Three different working ranges have been defined due to the differences between therapeutic, toxic and lethal concentrations of DA. Linearity was confirmed for the defined working ranges of all DA, except pseudoephedrine, ephedrine, norephedrine, and TFMPP. Since the remaining nineteen substances showed heteroscedasticity, six ponderation factors were studied to find the best fit for each compound. Limits of Detection and Lower Limits of Quantification have been studied and defined. No carryover was noted, with acceptable extraction recoveries. The achievement of all validation criteria according to international guidelines allows the application of the proposed method in routine forensic analysis. Using this method can also significantly reduce response times and GC-MS analysis costs.
- Knowledge maps as a complementary tool to learn and teach surgical anatomy in virtual reality : a case study in dental implantologyPublication . Lúcio, Inês M.; Faria, Bernardo G. de; Raidou, Renata G.; Proença, Luís; Zagalo, Carlos; Mendes, José João; Rodrigues, Pedro; Lopes, Daniel SimõesA thorough understanding of surgical anatomy is essential for preparing and training medical students to become competent and skilled surgeons. While Virtual Reality (VR) has shown to be a suitable interaction paradigm for surgical training, traditional anatomical VR models often rely on simple labels and arrows pointing to relevant landmarks. Yet, studies have indicated that such visual settings could benefit from knowledge maps as such representations explicitly illustrate the conceptual connections between anatomical landmarks. In this article, a VR educational tool is presented designed to explore the potential of knowledge maps as a complementary visual encoding for labeled 3D anatomy models. Focusing on surgical anatomy for implantology, it was investigated whether integrating knowledge maps within a VR environment could improve students' understanding and retention of complex anatomical relationships. The study involved 30 master's students in dentistry and 3 anatomy teachers, who used the tool and were subsequently assessed through surgical anatomy quizzes (measuring both completion times and scores) and subjective feedback (assessing user satisfaction, preferences, system usability, and task workload). The results showed that using knowledge maps in an immersive environment facilitates learning and teaching surgical anatomy applied to implantology, serving as a complementary tool to conventional VR educational methods.
- Preclinical dental students self-assessment of an improved operative dentistry virtual reality simulator with haptic feedbackPublication . Rodrigues, Pedro; Nicolau, Francisco; Norte, Martim; Zorzal, Ezequiel; Botelho, João; Machado, Vanessa; Proença, Luís; Alves, Ricardo; Zagalo, Carlos; Lopes, Daniel Simões; Mendes, José JoãoTo test and evaluate the second installment of DENTIFY, a virtual reality haptic simulator for Operative Dentistry (OD), on preclinical dental students, by focusing on user performance and self-assessment. Twenty voluntary unpaid preclinical dental students, with different background experience, were enrolled for this study. After the completion of an informed consent, a demographic questionnaire, and being introduced to the prototype (on the first testing session), three testing sessions followed (S1, S2, S3). Each session involved the following steps: (I) free experimentation; (II) task execution; S3 also included (III) completion of questionnaires associated with the experiment (total of 8 Self-Assessment Questions (SAQ)); and (IV) guided interview. As expected, drill time decreased steadily for all tasks when increasing prototype use, verified by RM ANOVA. Regarding performance metrics (Comparisons by Student’s t-test and ANOVA) recorded at S3, in overall, a higher performance was verified for participants with the following characteristics: female, non-gamer, no previous VR experience and with over 2 semesters of previous experience of working on phantom models. The correlation between the participants’ performance (drill time), for the four tasks, and user self-assessment evaluation, verified by Spearman’s rho analysis, allowed to conclude that a higher performance was observed in students who responded that DENTIFY improved their self perception of manual force applied. Regarding the questionnaires, Spearman’s rho analysis showed a positive correlation between the improvement DENTIFY inputs on conventional teaching sensed by students, also enhancing their interest in learning OD, their desire to have more simulator hours and the improvement sensed on manual dexterity. All participating students adhered well to the DENTIFY experimentation. DENTIFY allows for student self-assessment and contributes to improving student performance. Simulators with VR and haptic pens for teaching in OD should be designed as a consistent and gradual teaching strategy, allowing multiplicity of simulated scenarios, bimanual manipulation, and the possibility of real-time feedback to allow for the student’s immediate self-assessment. Additionally, they should create performance reports per student to ensure self-perception/criticism of their evolution over longer periods of learning time.
- Towards a multi-marker prognostic strategy in acute heart failure: a role for GDF-15Publication . Bettencourt, Paulo; Ferreira-Coimbra, João; Rodrigues, Pedro; Marques, Pedro; Moreira, Helena; Pinto, Maria João; Guimarães, João Tiago; Lourenço, PatríciaAIMS: Growth differentiation factor (GDF)-15 mirrors inflammation and oxidative stress in cardiovascular diseases. Brain natriuretic peptide (BNP) is associated with cardiomyocyte stretch in heart failure (HF). The objective of this study was to evaluate the prognostic impact of plasma GDF-15 and BNP in acute HF. METHODS AND RESULTS: We studied a subgroup of patients prospectively recruited in an acute HF registry (follow-up: 2 years; endpoint: all-cause mortality). Cox regression multivariate models were built to study the association of GDF-15 and mortality. Further cross-classification according to discharge GDF-15 (mean) and BNP (mean) and association with mortality was studied. We studied 158 patients: seventy-nine were male, mean age was 75 years, 55.1% had left ventricular ejection fraction < 40%, mean discharge BNP was 1000 pg/mL, and mean GDF-15 was 3013 ng/mL. Higher BNP and GDF-15 predicted 2-year mortality. Patients with GDF-15 ≥ 3000 ng/mL had a multivariate adjusted 2-year death risk of 1.86 (1.08-3.18). Patients discharged with both BNP and GDF-15 above the mean had an adjusted hazard ratio of 4.33 (2.07-9.06) when compared with those with both
- Trabalho de projeto: Intervenções de Enfermagem na prevenção das infeções associadas aos cuidados de saúde em doentes com catéter vesical.Publication . Rodrigues, Pedro; Monteiro, Elsa; Ruivo, Maria AliceO Curso de Mestrado em Enfermagem Médico-Cirúrgica (EMC) visa dotar licenciados em Enfermagem de competências profissionais diferenciadas para intervir, suportados na evidência, para o desenvolvimento dos saberes teóricos e práxicos da EMC. No final deste era expectável a aquisição e o aprofundamento das competências de um Mestre, das competências comuns dos Enfermeiros Especialistas e no âmbito de EMC, as competências específicas do Enfermeiro Especialista em Enfermagem em Pessoa em Situação Crítica (EEPSC), definidas pela Ordem dos Enfermeiros (OE). Com este intuito desenvolveu-se um conjunto de estágios, facilitadores de novas aprendizagens de cuidados, numa Comissão de Controlo de Infeção (CCI) e numa Unidade de Cuidados Intensivos (UCIP) de um Hospital de Lisboa, suportados pelos conteúdos teóricos lecionados nas unidades curriculares. Durante os estágios foi elaborado um Projeto de Intervenção em Serviço (PIS) com o título “Intervenções de Enfermagem na prevenção das infeções associadas aos cuidados de saúde (IACS) em doentes com catéter vesical” e um Projeto de Aprendizagem Clinica (PAC) no sentido de desenvolver as competências específicas do EEPSC. Estes apoiaram-se numa metodologia de projeto que partia da identificação de uma oportunidade/ problema, para a seguir elaborar um mapa descritivo da realidade onde se definiam os problemas quantitativamente e qualitativamente, para posteriormente delinearem-se objetivos e planearem-se intervenções. Os passos seguintes desta metodologia consistiam na execução e a avaliação. Neste contexto surge este relatório que apresenta o trabalho de projeto para dar a conhecer o trabalho desenvolvido com vista a aquisição de competências de Mestre em EMC.
- Vulnerabilidades das acessibilidades hospitalares face ao risco sísmico: Acessibilidades ao Centro Hospitalar de Lisboa CentralPublication . Rodrigues, Pedro; Vicêncio, HenriqueA região de Lisboa tem vindo a sofrer ao longo da sua história impactos elevados decorrentes de sismos próximos e distantes, doa quais são exemplos os sismos de 1356 e de 1775. A vulnerabilidade das vias de acesso a hospitais situados no concelho de Lisboa face à ocorrência de um sismo é um tema que não tem sido abordado mas que é importante para estimar as áreas da rede viária ocupadas por escombros provenientes do colapso de edifícios após um sismo e o posterior estabelecimento de medidas de mitigação e de preparação para a resposta. Este trabalho tem como objectivo avaliar as vulnerabilidades das acessibilidades aos hospitais de São José, Santa Marta, Capuchos e Estefânia. Foram escolhidos estes hospitais por serem geograficamente próximos, por pertencerem ao mesmo núcleo hospitalar, Núcleo Hospitalar de Lisboa Central, e por se localizarem em zonas que poderão sofrer danos significativos em caso de um evento sísmico. As freguesias da Pena e de St.º Estevão, onde se localiza este núcleo hospitalar, são caracterizadas por possuírem um edificado pré-pombalino e gaioleiro, pelo que os impactos estruturais face a um sismo poderão ser elevados. Para avaliar a vulnerabilidade das acessibilidades seguiram-se metodologias utilizadas internacionalmente e foi utilizado o método RADIUS, pois é um método que necessita de poucos recursos e é facilmente adaptável às características de cada país. Factores como a densidade de construção, tipo de colapso, características do edificado e distância relativa entre os edifícios e as vias foram considerados nas estimativas de níveis de ocupação longitudinal e lateral das vias e da severidade da sua ocupação. Verificou-se que no cenário de um sismo de características destruidoras a zona em estudo ficará com muito mais de metade da sua rede viária ocupada por escombros, o que levanta grandes questões acerca de como se processará o socorro às vítimas, de como circularão os veículos que prestarão esse socorro e sobretudo de como se fará a desocupação destas vias. Com base nestes resultados identificaram-se vulnerabilidades na rede viária de acesso aos hospitais, propuseram-se medidas mitigadoras e indicaram-se as rotas de acesso aos hospitais que terão menores ocupações de escombros em caso de evento sísmico.