bluuebunny/crossref_metadata_2025 huggingface dataset:
Dicionário temático ilustrado bilíngue português-Libras para uso escolar: uma proposta de verbete baseada na Lexicografia Pedagógica
Authors: Vieira Saulo Zulmar , Boldo Jaqueline , Souza Joyce Cristina
Published: March 2024

Este artigo é um investimento científico em defesa da Lexicografia Pedagógica da Língua de Sinais. Esta é uma pesquisa documental, de abordagem qualitativa e cunho exploratório, cujo objetivo primário é apresentar um protótipo de microestrutura para um dicionário de uso escolar que condiga com a realidade, especificidade e necessidade linguística de estudantes surdos do primeiro ano do Ensino Fundamental da Educação Básica. Para isso, analisamos as características dos dicionários de tipo 1 selecionados pelo Edital do PNLD/2012 - Dicionários, e em seguida, tendo em vista a inexistência de obras dessa natureza para crianças no Brasil, tomamos como referência três dicionários de três línguas de sinais de nacionalidades distintas, que foram analisados e serviram de base para a organização do protótipo. A análise foi baseada nos critérios norteadores para a avaliação de dicionários do referido Edital.
Produção Acadêmica: Resumo Expandido em Libras
Authors: Barros Leonardo Ribeiro de , Souza Tanya Amara Felipe de
Published: March 2024

O artigo propõe-se a mostrar como a utilização do gênero acadêmico resumo expandido é importante para acessibilizar a produção acadêmica para os pesquisadores surdos e ouvintes que sabem Libras. Apresentamos razões pelas quais o gênero acadêmico resumo expandido tem ganhado relevância em produções escritas em língua portuguesa e seu potencial e promissor uso em línguas de sinais. No referencial teórico, justificamos a importância do trabalho de tradução, e apontamos evidências em como ela é importante para a criação de sinais-termo. Quanto à metodologia, utilizamos a interpretação hermenêutica de Ricoeur (1988) e detalhamos como a produção acadêmica em Libras envolve não só cuidados específicos no trabalho de traduzir, mas também envolve perícia e técnica para sua filmagem e divulgação, especialmente quando realizado de maneira remota.
Expressões Idiomáticas da Libras: Um Estudo em Lexicografia: (in)traduzibilidade
Authors: Boldo Jaqueline , Stumpf Marianne Rossi
Published: March 2024

O presente artigo trata sobre expressões idiomáticas bilíngues na direção Português-Libras. Foram identificadas expressões em Libras publicadas e reconhecidas pela Comunidade Surda. Tal reconhecimento fez com que a Libras fosse considerada oficialmente como língua natural  do povo Surdo brasileiro, possuindo uma gramática e estrutura que lhe são próprias. A investigação das expressões idiomáticas possibilitará evidenciar autores surdos que discorrem sobre o tema pela autorrepresentação. Com o avanço da tecnologia, a comunicação nas plataformas digitais (Twitter, Instagram, Facebook) vem ganhando muito espaço por se tratar de um universo linguisticamente democrático. Essas plataformas podem ser utilizadas para levantamento de dados linguísticos e também possibilitam a organização de material lexicográfico que envolve língua de sinais. Devido a modalidade gestual-visual das línguas de sinais, sugere-se que o suporte seja em imagens videogravadas em meio digital. As produções idiomáticas provenientes do uso da Libras em suas distintas formas de expressão como língua natural trazem as experiências de vida do povo surdo. Reflete-se assim, que a expressão idiomática da Libras se refere, constantemente, à cultura e à identidade Surdas. Palavras-chave: Expressão idiomática; Cultura; Comunidade Surda; Libras; Lexicografia.
Descrição de sinais-termo em diferentes propostas terminográficas em Libras
Authors: Castro Júnior Gláucio de , Tuxi Patricia , Francisco Gildete da S. Amorim Mendes , Prometi Daniela
Published: March 2024

Nos últimos anos, houve um aumento de pesquisas linguísticas das línguas de sinais e, particularmente, o desenvolvimento de obras terminográficas (glossários, vocabulários e léxicos bilíngues) envolvendo Libras nas áreas de Ciências da natureza, Biociências e Saúde. Como esses domínios contribuem para a educação do Surdo no aprendizado de conteúdos relacionados, este estudo tem como objetivo realizar um levantamento de propostas terminográficas em Libras, em especial aquelas com registro de sinais-termo. Para tanto, foram descritos 18 trabalhos da base de dados da plataforma “Google Acadêmico Brasil”. A partir disso, pretende-se compreender a metodologia que envolveu o registro dos sinais-termo em glossários, vocabulários e léxicos bilíngues português e Língua Brasileira de Sinais
Estratégias de tradução de nomes próprios da Língua Portuguesa para a Libras em contexto de interpretação simultânea midiática
Authors: Sell Fabíola Sucupira Ferreira , Rech Gabriele Cristine , Nantes Janete de Melo
Published: March 2024

Este estudo tem por objetivo descrever as estratégias de tradução de nomes próprios de pessoas adotadas em interpretação simultânea midiática do português brasileiro para a Libras. Utiliza-se como abordagem teórica os estudos antroponomásticos e os estudos da tradução. Como metodologia, foram analisadas as estratégias de tradução de nomes de pessoas públicas, realizadas no programa Roda Viva da TV Cultura, que contam com a presença de tradutores e intérpretes de língua de sinais. Como resultados, aventaram-se hipóteses de possíveis estratégias de tradução, as quais foram parcialmente confirmadas. Como conclusões, observou-se a predominância do uso do sinal de nome em Libras nos casos em que este existia, bem como a utilização de apontação em contextos midiáticos.
(Re)pensando a interpretação forense Português-Libras
Authors: Silva Igor Antônio Lourenço da , Dias Lucas Gonçalves
Published: March 2024

Pautando-se no papel da interpretação forense para a garantia dos princípios da isonomia e do devido processo legal, este artigo visa (re)pensar a práxis a partir de um quase-experimento de interpretação simultânea envolvendo dois participantes (um com conhecimento de domínio em interpretação forense e outro sem esse conhecimento). Testou-se o impacto do conhecimento de domínio para o produto, do ponto de vista dos erros e estratégias/táticas de ordem linguística. Partiu-se da hipótese de que o conhecimento de domínio obtido via formação específica otimiza a “equivalência legal” entre a mensagem-alvo e a mensagem-fonte. Os resultados sugerem indícios para sustentar a hipótese e, ao mesmo tempo, apontam decisões interpretativas que comprometem os princípios. Destaca-se, assim, a interpretação forense como uma práxis altamente especializada que requer formação específica.
Pesquisa em Didática da Tradução e da Interpretação em Programas de Pós-Graduação em Estudos da Tradução
Authors: Rodrigues Carlos Henrique
Published: March 2024

This paper presents a mapping of Brazilian research carried out within the scope of Graduate Programs in Translation Studies, from 2005 to 2020, considering the field of Didactics of Translation/Interpreting. Based on its systematization and analysis, it is found that the production corresponding to Didactics of Translation/Interpreting, in Brazilian Graduate Programs in Translation Studies, remains limited; since if we consider the total number of 701 research studies mapped, only 19 of them (2.7%) — 10 dissertations and 9 theses — are related to this field.
The translation of a glossary based on a novel as a means of studies on the Amazon
Authors: Pereira Carlos Jean da Silva , Cosmo Felipe Alexandre Moura , Soares Natalice dos Santos Almeida , Menezes Juliana Cunha
Published: March 2024

The research project that motivated this work aims to address the various aspects of Amazonian literature, culture, identity, language, and fauna to English speakers. Its primary objective is to disseminate this knowledge by translating a glossary written entirely in Portuguese by the reviewer André Fillipe Fernandes, which is an integral part of the novel Wolvesland by Dalcídio Jurandir. To achieve this, we have adopted Britto's methodology (2006c), which strives to capture as many significant characteristics of the source text as possible in the target language. This approach is influenced by the fidelity concerns discussed in Britto (2002), emphasizing the importance of maintaining a high degree of correspondence between the source and target texts for a faithful translation. The purpose of this presentation is to examine the translation strategies employed, including omission, addition (Menezes 2017), and word class alteration, which can be valuable for other translators and researchers. Additionally, we created a pictionary, images incorporated alongside specific glossary entries, facilitating the construction of their meaning.
Os diálogos ficcionais em uma realidade distópica: a (não)representação de marcas de oralidade nas traduções dos best-sellers young adult A Seleção e Divergente
Authors: Nascimento Jéssica Nóbrega do , Amorim Lauro Maia
Published: March 2024

Nesta pesquisa realizou-se a análise das obras A Seleção e Divergente, a fim de constatar se houve ou não uso de marcas de oralidade em suas traduções, se a presença ou ausência dessas marcas estaria em concordância com os romances na língua de partida, assim como se tal decisão poderia estar sob a influência de outros fatores, como público-alvo ou temática retratada. Os resultados mostraram que, diferentemente da versão em inglês, as obras em português são comedidas quanto ao uso de marcas de oralidade, o que permitiu que constatássemos, em concordância com estudos anteriores, que best-sellers de temática distópica tendem a ser mais conservadores. O mesmo, no entanto, não pode ser dito de romances young adult que tratam de outros temas, o que reforça a necessidade de se dar continuidade a mais pesquisas.
O tambor islâmico da rua da Cadeia (Silves). Um contributo da arqueologia para uma melhor apreensão da mundividência do al-Andalus.
Authors: Bento Alexandre Miguel , Costa Miguel Cipriano
Published: March 2024

Predominantemente, a investigação no campo da música e seus instrumentos na Idade Média tem-se alicerçado em fontes escritas e iconográficas, por exemplo originárias da escultura ou de representações em manuscritos de índole diversa. Além de escassas, estas fontes só nos surgem também com suficiente integridade a partir dos séculos XIII/XIV. Não obstante, a maior quantidade e rigor das fontes que a arqueologia nos propicia a partir da década de 90 têm-nos vindo a revelar mais e novos dados graças à arqueologia preventiva, datações por isótopos de carbono e a um maior rigor sobre os contextos estratigráficos. Fontes essas, que além de escassas e raramente providas da integridade desejada, só pontualmente tem sido investigadas de forma aprofundada no âmbito concreto do estudo da música, seus agentes, seus instrumentos e suas práticas. Concretamente quanto aos instrumentos musicais do al-Andalus português, período de domínio e influência islâmica, árabe e berbere durante a Idade Média na península ibérica, o registo arqueológico conhecido não chega a albergar a dezena de exemplares. Neste contexto e tendo como fonte arqueológica um tambor de cerâmica inédito exumado em Silves em contexto de período almóada, este trabalho pretende destacar o potencial destes artefactos e abrir novos rumos na interpretação do instrumento musical e dos contextos socioculturais em que o mesmo era produzido e tocado, almejando novos rumos na sua interpretação e uma mais aprofundada apreensão da mundividência na Idade Média no al-Andalus português. Além da descrição do objecto per se, pretende-se a sua articulação com a iconografia e outras fontes coetâneas, também quanto à sua potencial influência na etnografia até à contemporaneidade.
Guerrilla Girls e o MASP: questionando a desigualdade de gênero nos museus
Authors: Duarte Letícia Saracini
Published: March 2024

O grupo Guerrilla Girls é formado por artistas ativistas do feminismo e suas obras denunciam a falta de visibilidade e espaço que minorias sociais – como as mulheres, LGBTQIA+, negros e latinos – têm nos universos museológico e artístico. Em 2017, o grupo fez sua primeira exposição individual no Brasil no Museu de Arte de São Paulo Assis Chateaubriand, apresentando obras que demonstram a disparidade entre artistas homens e artistas mulheres no tocante à inclusão de suas produções na narrativa de museus e galerias de arte. Isto posto, o foco deste artigo recai especificamente na produção artística das Guerrilla Girls que se refere à desigualdade de gênero e que foi exposto na mostra do MASP.
Lacunas informacionais na documentação museológica: uma análise sobre a coleção de Bumba Meu Boi do Maranhão sob a guarda do Museu de Folclore Edison Carneiro
Authors: Gomes Mariana
Published: March 2024

It intends to address the importance of the development and application of new methodologies, which seek to assist in the analysis and subsequent diagnosis of the current situation of museological documentation in museums with custody of objects of popular culture. It also seeks to publicize some of the preliminary results obtained from the experience of analysis of the museum documentation applied to the objects related to the Bumba Meu Boi of Maranhão, under the custody of the Edison Carneiro Folklore Museum (ECFM) in the research project "Objects/collections of popular culture under the custody of museums of the state of Rio de Janeiro". In addition, this article also seeks to briefly address the historicization of the ECFM and the main events prior to its creation, such as the institution of the Brazilian Folklore Defense Campaign (BFDC) until its transformation into the current National Center of Folklore and Popular Culture (NCFPC).
The destruction of the silver pipes from Ur: a new proposal
Authors: Muñoz Daniel Sánchez
Published: March 2024

This paper proposes that the silver pipes found in the Royal Cemetery of Ur (ca. 2450 BCE) were intentionally made unfit for use after having been used to play music during the funerary procession that led to the burial of the deceased in Private Grave 333. Based on Mesopotamian archaeological and cuneiform evidence, as well as brief comparative observations, it is suggested the reason for this was so that the spirits living inside this wind instrument could not at some point in the future disturb the living.
Tubos sonoros pré-históricos: um panorama internacional preliminar
Authors: Araujo Giusepe Augusto , Blanco Pablo Sotuyo
Published: March 2024

Este texto apresenta um panorama internacional amplo das pesquisas arqueomusicológicas relativas a aerofones pré-históricos tipo tubos sonoros (incluindo apitos e flautas), incluindo um conjunto expressivo de itens localizados fora do Brasil, em quatro continentes: África, América, Ásia e Europa. A fundamentação teórica que alicerçou conceitualmente a pesquisa que deu lugar a este artigo, assim como a metodologia utilizada, abrangem campos de conhecimento tais como Ciência da Informação (Biblioteconomia, Arquivologia, Museologia), Arqueologia e Musicologia (Acústica e Organologia), com o seu aproveitamento articulado interdisciplinarmente. Uma vez que não constam no Brasil pesquisas anteriores sobre este tema em tão incipiente área de conhecimento (como é a arqueomusicologia), seja pelo desconhecimento das ferramentas musicológicas, seja pela falta de crítica na análise arqueológica, foi necessário revisar a literatura disponível, cujos resultados apresentamos.
Sonoridades antigas dos povos tapajônicos e marajoaras: uma aproximação entre arqueomusicologia e etnomusicologia nas coleções do Museu Paraense Emílio Goeldi. Museu Nacional e Museu de Arqueologia e Etnologia da Universidade de São Paulo
Authors: Cohen Líliam
Published: March 2024

Este artigo tem como objetivo apresentar as características organológicas e a proeminência de aerofones e idiofones presentas nas coleções arqueológicas dos povos Marajoara e Tapajônico no Museu Paraense Emílio Goeldi, Museu Nacional e Museu de Arqueologia e Etnologida da Universidade de São Paulo. O artigo apresenta, também, reflexões sobre agência e intencionalidade do som e música em contextos rituais e suas conexões com os vestígios sonoros dessas sociedades, ancorados na pesquisa etnomusicológica sobre música dos povos indígenas das Terras Baixas da América do Sul. Por fim, o artigo apresenta discussões em torno da sonoridade, tessitura e considerações organológicas dos instrumentos.
O testemunho dos vasos nupciais como fonte para a interpretação do lugar social da música na Antiguidade grega
Authors: Carderaro Lidiane Carolina
Published: March 2024

Este artigo tem por objetivo analisar como a iconografia com temática musical, encontrada nos vasos cerâmicos de origem grega, especialmente do Período Clássico, pode ser vista como fonte para a interpretação e compreensão sobre o rol social ocupado pela música na cultura ateniense, sobretudo do século V a.C. Valendo-se da representação de figuras executando instrumentos musicais em contextos cotidianos, esse tipo de documentação nos permite entender os espaços da cidade em que a música era elemento cultural presente, bem como o papel do músico nesses contextos. Dessa forma, valorizamos também o papel dessas imagens dentro daqueles mesmos contextos, como registro da vida cotidiana e de uma mensagem a ser transmitida publicamente. Para tanto, tomamos para análise o testemunho dos vasos de formas tipicamente relacionadas ao contexto nupcial, os lebes gamikos, de uso exclusivo das cerimônias matrimoniais, e os loutrophoros, cujo uso é relacionado a ritos nupciais e funerários.
Experiencing Sounds in Ancient Spaces: An Overview
Authors: Bellia Angela
Published: March 2024

This paper aims to analyse recent studies which have raised new hypotheses concerning archaeomusicology, archaeoacoustics, and aural architecture as an emerging trend in humanities research, with a particular focus on the intersection of musical performances, theatrical spaces, and sound experience in the past. These studies have highlighted how theatrical buildings not only defined a place for performances, but also established the setting for multisensorial events in which music, dance, and other sonic events played an important role. This overview also takes into consideration how digital technologies can help shape our understanding of the architecture-sound nexus.
Arqueologia da Arquitetura: harmonia e proporção na Antiguidade - um ensaio bibliográfico sobre o design dos templos dóricos gregos (1990-2022)
Authors: Duarte Claudio Walter Gomez
Published: March 2024

Este artigo objetiva uma prospecção e um mapeamento da literatura selecionada durante o desenvolvimento de pesquisa acerca da arquitetura dos templos dóricos gregos, tendo como critério sua pertinência e contribuição ao campo. Foram feitas considerações específicas sobre artigos e livros publicados entre os anos de 1990-2022, que foram organizados em grupos temáticos. Nossos comentários são fruto de uma revisão bibliográfica do material original, que foi complementado com resenhas de referência publicadas por diversos autores, principalmente na seção Bulletin analytique d’architecture du monde grec do periódico Revue Archéologique.
A Arqueomusicologia: uma nova disciplina
Authors: Cerqueira Fábio Vergara , Chioma Daniela La
Published: March 2024

Nos últimos 30 anos, houve aumento significativo dos questionamentos sobre a música nas civilizações antigas, especialmente no campo da arqueologia, resultando no surgimento da disciplina "Arqueomusicologia" ou "Arqueologia da Música". Os estudos nessa área vêm crescendo e abrangem épocas e regiões diversas, destacando a recente inclusão de sessões dedicadas ao tema em conferências e congressos importantes. A Arqueologia da Música é apresentada como uma disciplina emergente conectada a várias áreas centrais das sociedades antigas. Este dossiê destaca a necessidade de mais atenção aos estudos arqueomusicais no Brasil, com exemplos de pesquisadores que exploram a arqueologia da música em outras regiões do mundo, apresentando contribuições de pesquisadores brasileiros e internacionais que desempenharam papéis fundamentais em sua evolução. Ele aborda diversas perspectivas, como estudos relacionados à Iconografia da Música em suportes arqueológicos, investigações sobre os realia (instrumentos musicais antigos preservados parcial ou integralmente), incluindo achados arqueológicos com contexto e peças descontextualizadas em coleções museológicas. Além disso, abrange estudos de arqueomusicologia experimental para recriar instrumentos antigos, explorando a interseção com as Digital Humanities, como reconstituições 3D de instrumentos sonoros antigos e estudos arqueoacústicos de estruturas arquitetônicas remanescentes, como teatros, usando tecnologias avançadas. Por fim, inclui estudos etnoarqueológicos e etnomusicológicos focados em objetos relacionados à música.
Abstract 049: Effect of the ICA Lesion Severity in Outcomes after Endovascular Treatment of Acute Tandem LVO
Authors: Castillo Milagros Galecio , Farooqui Mudassir , Hassan Ameer , Jumaa Mouhammad , Divani Afshin , Ribo Marc , Abraham Michael , Petersen Nils , Fifi Johanna , Guerrero Waldo , Malik Amer , Siegler James , Nguyen Thanh , Sheth Sunil , Yoo Albert , Linares Guillermo , Janjua Nazli , Quispe‐Orozco Darko , Tekle Wondwossen , Zaidi Syed , Ikram Asad , Olivé‐Gadea Marta , Qureshi Abid , Devarajan Alex , Zhang Linda , Abdalkader Mohamad , Zevallos Cynthia , Marioni Sergio Salazar , Sooomro Jazba , Gordon Weston , Turabova Charoskhon , Vivanco‐Suarez Juan , Rodriguez‐Calienes Aaron , Mokin Maxim , Yavagal Dileep , Ortiz‐Gutierrez Santiago
Published: March 2024

Introduction

Tandem Lesions (TLs) pose unique challenges in the endovascular management of acute ischemic stroke.(1) The absence of anterograde blood flow in the carotid occluded segment may limit the effectiveness of endovascular interventions, resulting in delayed reperfusion or suboptimal recanalization.(2,3) Thus, the presence of unpaired blood flow through the ICA in the context of TLs is believed to exacerbate the extension of ischemic lesions. (4,5) This study compared the clinical and procedural outcomes of patients with TLs and extracranial internal carotid artery occlusion versus those with stenosis.

Methods

A retrospective analysis was performed on a multicenter cohort of patients with TLs who underwent endovascular treatment. The patients were categorized into two groups: those with extracranial ICA stenosis and those with occlusion. Clinical outcomes, including functional independence, hemorrhagic events, and procedural time metrics including puncture to reperfusion time were assessed. Sensitivity analyses were conducted to evaluate these differences segregating patients according to varying degrees of stenosis, and in pre‐specified subgroups.

Results

A total of 513 patients with TLs were included in the study. 281 (54.8%) presented with ICA occlusion, and 232 (45.2%) presented stenosis >=70% (Table 1). The comparison between the stenosis and occlusion groups revealed no significant differences in the main outcomes, including mTICI 2c‐3 (47.5% vs. 50.6%, aOR 1.07, 95% CI 0.70‐1.64, p=.751) (Figure 1), mRS 0‐2 at 90 days (43.6% vs. 48.9%, aOR 0.79, 95% CI 0.52‐1.20, p=.271), sICH rates (4.7% vs. 5.6%, aOR 0.72, 95% CI 0.31‐1.71, p=.458), and puncture to reperfusion time (58 [40‐80.5] vs. 52.5 [35.2‐80], ratio 1.04, 95% CI 0.88‐1.23, p=.64). Similar analyses performed comparing different degrees of stenosis and occlusion, and in patients treated with the antegrade approach only, did not show significant differences either.

Conclusion

Our findings indicate that although more severe degrees of stenosis or occlusion of the ICA prolong the time from puncture to reperfusion, no significant differences in clinical outcomes exist. The clinical implications of these findings need to be further evaluated to fully comprehend the specific needs of patients affected by TLs.
Abstract 060: Endovascular Thrombectomy for Posterior Cerebral Artery in the National Inpatient Sample (EaT PeCAN pIeS)
Authors: Brake Aaron B , Fry Lane T , Heskett Cody E , Alkiswani Abdul‐Rahman S , LeBeau Gabriel T , De Stefano Frank , Lei Catherine M , Le Kevin C , Rouse Adam D , Peterson Jeremy A , Ebersole Koji
Published: March 2024

Introduction

Posterior cerebral artery acute ischemic strokes (PCA‐AIS) comprise around 2% of all acute ischemic strokes and often results in significant long‐term deficits. Current guidance regarding endovascular thrombectomy (EVT) for PCA occlusion is insufficient as no randomized trials exist.

Methods

A real‐world retrospective National Inpatient Sample database analysis compared medical management (MM) versus EVT for PCA strokes. Propensity score matching based on medical co‐morbidities was applied to adjust for nonrandomization. Subgroup analysis based on their initial stroke severity was conducted, comparing outcomes within subgroups of NIHSS 0‐9, 10‐19, and ≥20. Additional subgroup analysis was conducted to compare patients receiving IVT vs those not.

Results

The study included 19,655 patients, 18,910 MM, and 745 EVT. Among the unmatched patients, the EVT cohort had significantly higher NIHSS (10.21 vs 4.67, p < 0.001). In the unmatched analysis, the EVT‐treatment group also demonstrated lower rates of favorable functional outcomes, functional independence, and higher rates of ICH and in‐patient mortality. Matched analysis showed no differences in functional outcomes but higher inpatient mortality and ICH rates in the EVT treatment group. Subgroup analysis identified higher odds of favorable functional outcomes and functional independence associated with EVT among patients presenting with intermediate NIHSS (10‐19). On further subgroup analysis, this EVT benefit was maintained only among patients receiving IVT.

Conclusion

This analysis demonstrates that, across the population, patients receiving EVT for PCA AIS are more severe and in general, have worse outcomes than patients receiving MM only. However, on matched analysis there does seem to be a significant clinical benefit associated with EVT for patients presenting with an NIHSS between 10‐19 and this benefit appears to be associated with patients who have also received IVT. More research is needed for optimal patient selection when considering EVT for PCA.
Abstract 062: N20 Potential And Imaging Biomarkers Of Functional Recovery In Acute Ischemic Stroke Patients And EVT
Authors: Piñeiro Alicia Martinez , Lucente Giuseppe , Hernandez‐Perez María , Cortés Jordi , Arbex Andrea , Cortina Meritxell Gomis , Bouix Laura Dorado , de la Ossa Natalia Pérez , Ramos‐Fransi Alba , Almendrote Miriam , Castaño Carlos , Remollo Sebastián , Sort Maria Rosa García , Collsamata Patricia Cuadras , Millán Mónica , Dávalos Antoni
Published: March 2024

Introduction

PROMISE trial has shown high predictive accuracy of the N20 somatosensory evoked potential (SEP) response on functional recovery in patients with AIS undergoing endovascular thrombectomy (EVT). This secondary study aims to describe the association between the N20 response and imaging biomarkers of ischemic penumbra, infarct volume and collateral flow.

Methods

Presence and amplitude of the N20 response was recorded before EVT. At baseline, infarct core was automatically calculated establishing a threshold value of ADC<620x10‐6mm2/s in MR and of rCBF<30% in CTP; ischemic volume was estimated as Tmax >6 sec; and hypoperfusion intensity ratio (HIR) as the proportion of ischemic volume that also has a delay in Tmax>10s. Leptomeningeal collaterals were classified according to the Arterial Collateral Grading Scale in CTA as "poor" (absence and <50%) and optimal (>50%, equal to and greater than the contralateral), or according to the American Society of Interventional and Therapeutic Neuroradiology/Society of Interventional Radiology scale when the acquired image was dynamic MR angiography, dichotomized as incomplete collateral fill (poor collateral) (grades 0 to 2) and complete collateral fill (optimal collateral) (grades 3 and 4). Collaterals were not evaluated in the conventional angiography since we did not perform a full study to shorten the time to thrombus access. The adjusted predictive value of N20 for functional recovery was analyzed by logistic regression and compared with imaging variables by using receiver operating characteristic curves.

Results

From 223 patients studied, 99 patients had multimodal imaging with perfusion studies and N20 assessable recordings at baseline (mean age, 70y; median NIHSS, 18), 63 patients with present (N20+) and 36 with absent N20 response (N20‐). Median infarct core was 12 (0‐25) and 16 (3‐60) cc (p= 0,193), ischemic volume 81 (39‐132) and 111 (54‐188) cc (p=0,082) and the HIR 0,4 (0,2‐0,6) 0,4 (0,3‐0,6) (p=0,572), respectively. N20+ was associated to a better collateral flow (OR 2,5; [1,2‐5,3]; p=0,01). N20+ showed the highest predictive capacity of functional recovery at day 7 compared to imaging variables (Table 1) and increased 15 (4‐103) fold the likelihood of good outcome after adjusting for collateral flow 2.94 (1.10‐8.40), ASPECT score (1,17 (0,74 ‐ 1,87) and infarct core 0.98 (0.95‐1.01).

Conclusion

N20 SEP response is a powerful biomarker of functional recovery that might surrogate advanced imaging in patients with AIS evaluated for endovascular thrombectomy.
Abstract 066: Mechanical Thrombectomy Access in Africa: A Mission Thrombectomy (MT‐2020 Plus) MT‐GLASS Study Sub‐Analysis
Authors: Alejo Gabriela , Asif Kaiz , Otite Oliver , Gebreyohanns Mehari , Desai Shashvat , Jones Erica , Yavagal Dileep , Ortega‐Gutierrez Santiago
Published: March 2024

Introduction

Despite the well‐established potent benefit of mechanical thrombectomy (MT) for large vessel occlusion (LVO) stroke, access to MT remains low globally, particularly in Africa. We compared the access to MT in Africa versus access in other regions of the globe.

Methods

Mission Thrombectomy conducted a survey in 75 countries between November 22, 2020, and February 28, 202 to assess the access to mechanical thrombectomy and its determinants. Mechanical thrombectomy access (MTA) was defined as the estimated proportion of patients with LVO receiving MT annually. The current MT operator availability was defined as ([current MT operators x 50/current annual number of estimated thrombectomy‐eligible LVOs] x 100) and the current MT center availability was defined as ([current MT centers x 150/current annual number of estimated thrombectomy‐eligible LVOs] x 100). Baseline survey responses in Africa versus the rest of the world were summarized using descriptive statistics. Between group differences in baseline characteristics were evaluated using the Wilcoxon rank‐sum test

Results

Of all 61 countries included in the final analysis, 14.8% (n=9) were from the African continent. Median MT access in Africa (0.4%) was about 10% of that of the rest of the world (4.9%). Country‐level summary characteristics of different determinants of MT access in Africa vs the rest of the world are presented in Table 1. Less than 50% of African countries (44.4%) have prehospital medical services, compared to 84.6% in the rest of the world (p‐value for comparison =0.007). In generalized linear models, LVO stroke patients in Africa had 90% lower odds of MT access when compared to the rest of the world (OR 0.10, 95%CI 0.04‐0.22).

Conclusion

Access to MT in Africa is extremely low and far below that of other regions of the globe. Public health interventions must be prioritized to increase access to MT in the continent of Africa.
Abstract 094: Sudden Onset Dysphagia: A Symptom To Be Aware of During Code Strokes
Authors: Abeer Aysha , Rodriguez Wilson , Schaper Nicholas , Ganev Yoan , Kaur Gunjanpreet , Awad Adam , Miremadi Brian
Published: March 2024

Introduction

Lateral medullary infarction (LMI) can present with dysphagia, dysphonia, dysarthria, vertigo, nausea, skew deviation, and ipsipulsion. Patients may also exhibit sensory loss and ipsilateral Horner’s syndrome. LMS often develops because of an acute infarct from the vertebral arteries or posterior inferior cerebellar arteries (PICA). The most common mechanism of stroke usually is atherothrombosis, followed by cardioembolic, dissection and embolic source of undetermined source (ESUS). While dysphagia often accompanies the constellation of LMS symptoms, it is rarely the first symptom and has only been reported in a few cases in the literature. In this report we describe the case of a man in his 40s with acute onset dysphagia as the presenting finding ahead of an LMS diagnosis.

Methods

The patient was identified in routine clinical practice.

Results

A man in his 40s with medical history of HTN, type 2 DM and polycystic kidney disease, presented with sudden‐onset dysphagia which started while he was drinking alcohol. Later he noticed that he was unable to keep his balance. His National Health Institute Stroke Scale was 4. Neurologic exam was pertinent for left‐sided miosis, ptosis, and dysmetria. Pinprick and temperature sensation were decreased on the right arm and leg. Facial sensation to light touch was diminished on the left. Brain MRI showed an acute infarct in the left lateral medulla (Figure A). CTA showed calcified atherosclerosis of the V4 segment of left vertebral artery (Figure B). Mechanism of ischemic stroke was artery to artery thromboembolism from the left V4 segment of vertebral artery. For secondary prevention, dual antiplatelet therapy, high intensity statin, and optimization of his risk factors were initiated.

Conclusion

This case report demonstrates that dysphagia can be the initial symptom of an acute ischemic stroke. Diagnosis and recognition of an atypical presentation of lateral medullary syndrome can pose a particular challenge especially in this era of “time is brain” but is of the utmost importance to facilitate good outcomes. Patients presenting with dysphagia who have risk factors for stroke and no other obvious etiology for their symptoms should be worked up for possible cerebrovascular etiology.
Abstract 100: Endovascular treatment of a traumatic near‐miss vessel injury
Authors: Varon Alberto , Mehta Tapan
Published: March 2024

Introduction

Traumatic injuries are a common cause of death, representing nearly 8% of all deaths worldwide(1). Vascular injury can occur in about 3% to 20% of the patients that suffer from a blunt or penetrating craniocervical injury (2). The most commonly injured arteries from penetrating trauma include CCA, ICA, and ECA (73%,22%, and 5% respectively)(3). Embolization is now a well‐established endovascular technique to treat traumatic hemorrhagic injuries(4). We present a case of a patient with a near‐miss injury treated endovascularly.

Methods

We present the case of a 29‐year‐old male who was found unconscious with a knife embedded in his left face. On arrival at the hospital, the patient was hemodynamically stable with no ongoing hemorrhage or respiratory distress. CTA did not reveal any vascular injury; however, due to the knife's location, the neurointerventional radiology team was consulted and performed an embolization of the proximal third of the internal maxillary artery. The patient was later taken to the operating room for the removal of the knife.

Results

The non‐serrated end of the knife had resulted in impingement of the distal left ECA just proximal to the bifurcation of the superficial temporal artery and internal maxillary artery and resulting in approximately 80% narrowing of the vessel. Given the extent of impingement of the foreign object on the distal portion of the left ECA, after discussing with the otolaryngology team, a decision was made to proceed with coil embolization of the vessel due to concerns for vessel injury which can result in life‐threatening hemorrhage or pseudoaneurysm during removal of the foreign object in the OR. A total of 4 HydroFrame coils were deployed from the proximal one‐third of the internal maxillary artery into the ECA covering the superficial temporal artery to the origin of the occipital artery. 2 MicroPlex 5mm x 22cm Cosmos 10 bare platinum coils were placed intact to the left ECA extending proximally just distal to the occipital artery. Final AP projection of the left ECA post coil embolization was performed showing complete occlusion of the vessel across the area of impingement at the distal ECA proper. Retrograde filling of the internal maxillary artery was noted. The left middle meningeal artery is occluded and no longer visualized as its origin is being covered by coils. Patient underwent foreign object removal by ENT and had a good functional outcome.

Conclusion

Endovascular intervention prior to foreign object removal can improve outcomes and decrease the risk of severe vascular injury.
Abstract 125: Amyloid Beta‐Related Angiitis: A Case Presentation
Authors: Suryadevara Tejeswi , Izadyar Sharam
Published: March 2024

Introduction

We detail the presentation and diagnostic workup of a woman who was ultimately diagnosed with Amyloid Beta‐Related Angiitis (ABRA), which can be a challenging condition to diagnose.

Methods

This is a case report which describes the presentation and workup that led to the diagnosis of ABRA.

Results

64‐year‐old woman with history of hypertension, hypothyroidism, hyperlipidemia and diabetes mellitus presented to outside hospital with progressive encephalopathy and worsening expressive aphasia for three months who was transferred to our center for a left frontal lobe mass with vasogenic edema. MRI brain with and without gadolinium showed multiple small enhancing cerebral regions, diffuse swelling, and leptomeningeal enhancement. Lumbar puncture was within normal limits. Cytology and CA 19‐9, CEA, and alpha‐fetoprotein were all normal. CT thorax, abdomen, and pelvis with contrast did not reveal findings suspect for malignancy. Given diagnostic uncertainty, brain biopsy of the left frontal lesion was completed. Findings were consistent with amyloid beta deposition in the walls and concerning for an inflammatory angiitis, without features to suggest infectious or malignancy related process. Vasculitic labs were notable for positive ANA (1:160), speckled pattern, but were otherwise negative. She completed a five day course of methylprednisolone 1g IV with some improvement in encephalopathy and aphasia. She was started on a prednisone taper and cyclophosphamide and discharged to a skilled nursing facility with follow up with vascular neurology and neuroimmunology planned.

Conclusion

ABRA is a complication seen in cerebral amyloid angiopathy and is a rare cause of CNS vasculitis. This condition should be suspected in the appropriate clinical scenario, particularly given the improvement often noted with immunosuppression (1).
Abstract 137: Management of cSDH with the Use of 10:1 Glue Hyper‐Dilution in MMA Embolization: Radiographic Follow‐up
Authors: Khan Muhammad W. , Meyer Benjamen M. , Campos Jessica K. , Laghari Fahad A. , Zarrin David , de Beaufort Jonathan C. Collard , Amin Gizal , Golshani Kiarash , Beaty Narlin B. , Bender Matthew , Colby Geoffrey P. , Lin Li‐Mei , Coon Alexander L.
Published: March 2024

Introduction

Middle meningeal artery (MMA) embolization for the treatment of chronic subdural hematomas (cSDH) is becoming an alternative to surgical intervention. Recent literature suggests distal embolic penetration beyond visible MMA branches achieves optimal cSDH devascularization. Here, we report the mid‐term radiographic follow‐up of a hyper‐dilution glue technique for enhanced embolization of non‐visible dural vasculature.

Methods

A prospectively maintained IRB‐approved institutional database of the senior authors was retrospectively reviewed to identify and analyze cSDHs managed with 10:1 glue hyper‐dilution (TRUFILLTM n‐BCA liquid embolic) paradigm.

Results

Over a 5‐month study period (September 2022 to February 2023), 46 cases of 10:1 glue hyper‐dilution for MMA embolization were identified in 23 patients. 56% of the cases were female with an average age of 70±1.59 years. Average admission cSDH thickness was 9.3±0.8 mm with an average midline shift of 3.5±0.5 mm. Bilateral embolization was performed in 91% (n=21) of patients. Technical success was achieved in all cases without need for periprocedural rescue surgery. One postprocedural complication (2.2%), a unilateral partial facial nerve palsy (House‐Brackmann 2), was identified. All patients were discharged at their mRS baseline. Nine patients (40%) had radiographic follow‐up (mean 42±6.7 days; range 1 to 194 days). Complete resolution of the cSDH was achieved in 67% of those with follow‐up imaging (n=9) cases. In those with residual cSDH, average followup thickness was 7.2±0.8mm.

Conclusion

Mid‐term radiographic results of 10:1 glue hyper‐dilution for MMA embolization for enhanced non‐visible dural vasculature demonstrates a favorable safety profile compatible with the literature and encouraging resolution of cSDH. Further follow‐up and comparative studies are warranted.
Abstract 138: Use of a 046” Intermediate Guide Catheter for Mini‐Triaxial Access in Flow Diversion: Multi‐institution Experience
Authors: Khan Muhammad W. , Meyer Benjamen M. , Campos Jessica K. , Laghari Fahad A. , Zarrin David A. , de Beaufort Jonathan C. Collard , Amin Gizal , Golshani Kiarash , Beaty Narlin B. , Bender Matthew T. , Lin Li‐Mei P. , Colby Geoffrey P. , Coon Alexander L.
Published: March 2024

Introduction

The latest FDA‐approved intermediate guide catheter, Vecta46, allows for a unique, mini‐triaxial access platform. The size of this catheter allows for 058” guide compatibility, intraluminal accommodation of an 027” microcatheter for flow diverter delivery, and angiographic procedural injections in an 070” guide catheter.

Methods

We retrospectively identified and analyzed patients who underwent Surpass Evolve flow diversion treatment utilizing the Vecta46 across the senior authors’ institutions.

Results

The use of the Vecta46 was identified for treatment of 9 aneurysms treated with the Surpass Evolve Flow Diverter (March to April 2023), in patient’s aged 61±3.5 years (range 40‐74 years) with 89% (n=8) female. Aneurysm average size of 4.3±0.47mm, aneurysms originating along the internal carotid artery (n=6) and MCA branches (n=4). Preoperative PRU measured 92 ± 21. Radial access was utilized in 2 cases. Mean Surpass Evolve utilized was 4.4±0.17mm (diameter) by 15.7±0.88mm (length). An 071” guide catheter (Armadillo, Q’Appel Medical) was used in 8 cases. Vecta46 was safely navigated to the supraclinoid ICA segment in all cases. Average fluoroscopy time was 24±3.1 minutes, radiation exposure was 756±259mGy, and verapamil was used in all cases. Technical success was achieved in all cases with adequate vessel wall apposition verified. There were no hemorrhagic complications nor parent vessel wall dissection or vasospasm in the region of the Vecta46 catheter on final control angiography in all 9 cases.

Conclusion

The new low‐profile Vecta46 intermediate catheter can be safely and effectively utilized in a 6‐French mini‐triaxial system for flow diverter delivery without compromising injection quality, support, or trackability.
Abstract 143: Tigertriever in the Treatment of Acute Ischemic Stroke with Underlying Intracranial Atherosclerotic Disease
Authors: Ojeda Diego , Ghannam Malik , Sanchez Sebastian , Almajali Mohammad , Koul Prateeka , Saver Jeffrey L. , Gupta Rishi , Sagues Elena , Gudino Andres , Saleem Arshaq , Wang Bincheng , Ortega Santiago , Samaniego Edgar
Published: March 2024

Introduction

The Tigertriever stentretriever provides operators the ability to manually regulate the radial expansion of the device. In vitro testing of the Tigertriever has demonstrated that it exerts a radial force twice as powerful as that exerted by self‐expanding stentretrievers. The enhanced radial force of the Tigertriever may improve the recanalization of patients with acute large vessel occlusion (LVO) due to underlying intracranial atherosclerosis (ICAD). We analyzed the TIGER trial dataset to determine the safety and effectiveness of Tigertriever in the recanalization of patients with underlying ICAD and acute ischemic stroke.

Methods

An independent imaging laboratory assessed the presence of ICAD. ICAD was present if at least ≥ one of the following features were observed: (1) angiographic evidence of taper‐shape occlusion, (2) presence of arterial calcific lesions, and/or (3) remnant stenosis > 70% after mechanical thrombectomy (MT). Vessel diameter changes were studied by measuring the occlusion site and the proximal parent vessel using the best projection of pre‐ and post‐thrombectomy DSA images. additionally, a retrospective analysis of revascularization rates during the first attempt was conducted. The first‐pass effect (FPE) was defined as the achievement of successful recanalization (mTICI 2b‐3) using only one pass of the Tigertriever device.

Results

A total of 160 patients from the TIGER trial were included in our study, with 32 (20%) patients having ICAD. An increase in the mean diameter of the vessel at the site of the occlusion was observed post‐thrombectomy (1.5 ± 0.73 mm vs 1.88 ± 0.67 mm, p < 0.01). The diameter in the proximal parent vessel did not change after thrombectomy (2.22 ± 0.68 mm vs 2.32 ± 0.64 mm; p = 0.34). There were no symptomatic hemorrhages. The FPE was documented in of 15 out of 32 (46.8%) patients.

Conclusion

The Tigertriever device is safe and effective in the revascularization of patients with LVO and underlying ICAD. The diameter of the occluded arterial segment with underlying ICAD increased after mechanical thrombectomy with Tigertriever. The FPE with the Tigertriever in this subpopulation of the TIGER trial was 46.8%.
Abstract 145: Hyperacute Virtual Reality Augmented Rehabilitation (VRAR) in the Neurological ICU: A Safety and Feasibility Study
Authors: Subah Galadu , Lin Fangyi , Ming Tiffany , Clare Kevin , Oishi Akihiko , Thacker Akash , Bulbul Sarah , Uddin Anaz , Feldstein Eric , Nolan Bridget , Dominguez Jose , Zeller Sabrina , Hanft Simon , Gandhi Chirag , Al‐Mufti Fawaz
Published: March 2024

Introduction

Virtual reality (VR) has shown great promise in stroke rehabilitation, providing interactive exercises that target motor and cognitive impairments with minimal adverse events and positive outcomes in improving motor function, balance, and patient motivation. However, most post‐stroke rehabilitation focuses on recovery after discharge, emphasizing the need for efficient interventions like VR to make the most of limited hospital rehab time for stroke survivors. This study aimed to evaluate the safety and feasibility of incorporating hyperacute virtual reality augmented rehabilitation (VRAR) as part of acute stroke care.

Methods

A prospective, proof‐of‐concept study was conducted with 13 eligible patients who experienced hemorrhagic or ischemic stroke between July 1st, 2021, and January 1st, 2022. Enrolled patients received VRAR in addition to the standard‐of‐care rehabilitation. Patients with dementia, expressive aphasia, delirium, or were unable to participate in physical therapy/ utilize the virtual reality hardware were excluded. Demographic data, functional scores, and complications were collected.

Results

Of the 13 patients who used the VRAR rehabilitation program, ten completed up to three visits. The cohort consisted of 50% male patients with a mean age of 73.6 years. Half of the patients had a primary diagnosis of ischemic stroke, while the rest were diagnosed with either hemorrhagic stroke (30%) or transient ischemic attack (20%). The mean length of hospital stay was 11.1 days, and the median time from admission to rehabilitation was 4 days. Most patients (80%) were discharged to outpatient rehabilitation, while 20% were discharged home. The median number of sessions was one, with four patients using the VRAR program multiple times. Despite the withdrawal of two patients (15.4%) who expressed mild discontent, there were no adverse events reported during the use of the VRAR rehabilitation program.

Conclusion

The findings of this study offer evidence backing the safety and feasibility of integrating VRAR as a supplementary tool in hyperacute stroke care. These results underscore the potential of VR therapy as a promising addition to conventional stroke rehabilitation methods.