Navegando por Autor "Lindquist, Ana Raquel"
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Artigo Blockchain in health information systems: a systematic review(International Journal of Environmental Research and Public Health, 2024-11-14) Fonsêca, Aleika Lwiza Alves; Barbalho, Ingridy Marina Pierre; Fernandes, Felipe Ricardo dos Santos; Arrais Júnior, Ernano; Nagem, Danilo Alves Pinto; Cardoso, Pablo Holanda; Veras, Nícolas Vinícius Rodrigues; Farias, Fernando Lucas de Oliveira; Lindquist, Ana Raquel; Santos, João Paulo Queiroz dos; Morais, Antonio Higor Freire de; Henriques, Jorge; Lucena, Marcia Jacyntha Nunes Rodrigues; Valentim, Ricardo Alexsandro de MedeirosAbstract: (1) Background: With the increasing digitalization of healthcare systems, data security and privacy have become crucial issues. In parallel, blockchain technology has gradually proven to be an innovative solution to address this challenge, as its ability to provide an immutable and secure record of transactions offers significant promise for healthcare information management. This systematic review aims to explore the applications of blockchain in health information systems, highlighting its advantages and challenges. (2) Methods: The publications chosen to compose this review were collected from six databases, resulting in the initial identification of 4864 studies. Of these, 73 were selected for in-depth analysis. (3) Results: The main results show that blockchain has been used mainly in electronic health records (63%). Furthermore, it was used in the Internet of Medical Things (8.2%) and for data sharing during the COVID-19 pandemic (6.8%). As advantages, greater security, privacy, and data integrity were identified, while the challenges point to the need for standardization and regulatory issues. (4) Conclusions: Despite the difficulties encountered, blockchain has significant potential to improve healthcare data management. However, more research and continued collaboration between those involved are needed to maximize its benefitsArtigo Effects of treadmill inclination on the gait of individuals with chronic hemiparesis(Elsevier, 2011-10-01) Mendes, Luciana de Andrade; Moreno, Cinthia de Carvalho; Lindquist, Ana RaquelObjective: To analyze the effects of electric treadmill inclination on the gait of individuals with chronic hemiparesis. Design Descriptive, observational study Setting Laboratory for human movement analyses of UFRN. Participants Individuals (N=18) with a mean age of 55.3±9.3 years and a lesion time of 36±22.8 months. Interventions Not applicable. Main Outcome Measures Subjects were assessed for functional independence (FIM) and balance (Berg Balance Scale). Spatial-temporal variables were observed as well as the angular variation of the hip, knee, and ankle in the sagittal plane, while the individuals walked on the treadmill at 3 different inclinations (0%, 5%, and 10%). Results: There was an increase in stance time between 0% and 5% (0.83±0.21 vs 0.87±0.20; P=.011) and 0% and 10% (0.83±0.21 vs 0.88±0.23; P=.021). The other spatial-temporal variables did not change. During initial contact there was an increase in the hip, knee, and ankle flexion angle. An increase in hip amplitude was also observed between 0% and 10% (37.83±5.23 vs 41.12±5.63; P<.001) and 5% and 10% (38.80±5.96 vs 41.12±5.63; P=.002) and in knee amplitude between 0% and 10% (47.51±15.07 vs 50.30±12.82; P=.040), as well as decreased hip extension and increased dorsiflexion. Conclusions: Treadmill inclination promoted angular alterations such as an increase in hip, knee, and ankle angle during initial contact and the swing phase and an increase in the amplitude of movement of the hip and knee, as well as an increase in stance time of the paretic lower limbTCC Modulação da atividade eletromiográfica durante diferentes comandos de imagética da marcha em paciente com lesão medular completa: estudo de caso(Universidade Federal do Rio Grande do Norte, 2017-12-05) Lacerda, Matheus Oliveira; Lindquist, Ana Raquel; Camila Simão; Lindquist, Ana Raquel; Simão, Camila; de Holanda, LedycnarfIntrodução: Sabe-se que, mesmo em lesões medulares (LM) clinicamente completas, existe algum grau de continuidade axonal abaixo do nível da lesão. Além disso, a ativação cortical por meio da imaginação do movimento facilita a excitabilidade das vias corticoespinais e reduz a inibição intracortical do córtex motor. Este estudo pretende observar o padrão da atividade elétrica de músculos abaixo do nível da lesão em paciente com LM completa crônica a partir da solicitação de quatro diferentes comandos cinestésicos de imagética da marcha (IM) durante a manutenção da postura ortostática. Metodologia: Paciente com LM completa (nível T10), gênero masculino, 20 anos de idade, 21 meses de lesão realizou 1 sessão de treino com quatro comandos diferentes de IM em posição ortostática enquanto foi captada a eletromiografia (EMG) de músculos abaixo do nível da lesão: reto femoral, bíceps femoral, adutor longo, tibial anterior, gastrocnêmio lateral, gastrocnêmio medial, glúteo médio e glúteo máximo. Resultados: Foi observada modulação da intensidade do sinal de EMG para os músculos: reto femoral, bíceps femoral e tibial anterior bilateralmente. Com aumento da intensidade do sinal de EMG durante o período de IM em relação ao repouso. Foi observado ainda, modulações diferentes para os quatro comandos de IM. Conclusão: Os achados desse estudo sugerem que pode ocorrer modulação cortical a partir da imagética/tentativa da marcha em uma pessoa com lesão medular completa crônica.