Automated evaluation of collateral circulation for outcome prediction in acute ischemic stroke.

INTRODUCTION: The assessment of collateral circulation in acute ischemic stroke management is essential. Modern tools, such as Brainomix's e-CTA, powered by artificial intelligence, provide detailed insights into collateral assessment. This retrospective study aims to identify factors contributing to favorable collateral status and compare outcomes between patients with good collaterals (grade 3) and fair collaterals (grade 0-2). METHOD: This retrospective study included 97 patients admitted to the Stroke Unit at the Hospital de Clínicas of the Federal University of Paraná, Brazil, from September 2021 to January 2023. Comparative analyses involved demographic factors, cardiovascular risk factors, and the combined outcome of mortality and moderate to severe disability at discharge, 30-day, and 90-day follow-ups. RESULTS: Among the 97 cases, 58.8 % showed 'good collaterals' with a grade 3 status. Variables affecting collateral status included age (p = 0.042), neutrophil-lymphocyte ratio (p = 0.005), and initial NIHSS scores (p<0.001). The presence of good collaterals according to e-CTA reduced the odds of death and moderate-severe disability at discharge (p = 0.003; OR 0.27) and at 30 days (p = 0.015; OR 0.33), although this effect diminished at the 90-day mark after multivariate analysis. DISCUSSION: Automated collateral assessment through e-CTA is a valuable tool in acute ischemic stroke evaluation. Good e-CTA collateral score serve as a promising imaging biomarker, guiding informed clinical decisions during Stroke Unit hospitalizations. This study highlights the relationship between collaterals and stroke outcomes and underscores the potential for AI-driven tools to enhance stroke care management.

Functional impairment and post-stroke depression: a 6-month longitudinal study.

BACKGROUND: In recent decades, considerable advances have been made in the treatment of acute ischemic stroke (IS) and its prevention. However, even after treatment, approximately two-thirds of patients with IS have some degree of disability that requires rehabilitation, along with an increased possibility of developing psychiatric disorders, particularly depression. OBJECTIVE: To determine the predictors of post-stroke depression in a 6-month period in patients with IS. METHOD: Ninety-seven patients with IS without previous depression were included in the study. The study protocol was applied during hospitalization and at 30, 90, and 180 days after hospital discharge. A binary logistic regression was then used. Age, sex, marital status, occupation, education, thrombolysis, National Institute of Health Stroke Scale, modified Rankin scale (mRS) score, Barthel index, and Mini-Mental State Examination score were included as independent variables. RESULTS: Of the 97 patients, 24% of patients developed post-stroke depression. In the longitudinal follow-up, an mRS score of > 0 was the lone significant predictor of depression development (odds ratio = 5.38; 95% confidence interval: 1.25-23.12; p < 0.05). CONCLUSION: Our results showed that in patients without previous depression, functional impairment of any degree has a 5-fold greater chance of leading to depression development in the first 6 months post-stroke as compared to that in patients without functional impairment.

Stroke profile and care during the COVID-19 pandemic: What changed and what did not? A prospective cohort from Joinville, Brazil.

Introduction: The COVID-19 pandemic has wrought negative consequences concerning quality of care for stroke patients since its onset. Prospective population-based data about stroke care in the pandemic are limited. This study aims to investigate the impact of COVID-19 pandemic on stroke profile and care in Joinville, Brazil. Methods: A prospective population-based cohort enrolled the first-ever cerebrovascular events in Joinville, Brazil, and a comparative analyzes was conducted between the first 12 months following COVID-19 restrictions (starting March 2020) and the 12 months just before. Patients with transient ischemic attack (TIA) or stroke had their profiles, incidences, subtypes, severity, access to reperfusion therapy, in-hospital stay, complementary investigation, and mortality compared. Results: The profiles of TIA/stroke patients in both periods were similar, with no differences in gender, age, severity, or comorbidities. There was a reduction in incidence of TIA (32.8%; p = 0.003). In both periods, intravenous thrombolysis (IV) and mechanical thrombectomy (MT) rates and intervals from door to IV/MT were similar. Patients with cardioembolic stroke and atrial fibrillation had their in-hospital stay abbreviated. The etiologic investigation was similar before and during the pandemic, but there were increases in cranial tomographies (p = 0.02), transthoracic echocardiograms (p = 0.001), chest X-rays (p < 0.001) and transcranial Doppler ultrasounds (p < 0.001). The number of cranial magnetic resonance imaging decreased in the pandemic. In-hospital mortality did not change. Discussion: The COVID-19 pandemic is associated with a reduction in TIA, without any influence on stroke profile, the quality of stroke care, in-hospital investigation or mortality. Our findings show an effective response by the local stroke care system and offer convincing evidence that interdisciplinary efforts are the ideal approach to avoiding the COVID-19 pandemic's negative effects, even with scarce resources.

IScore, a useful prognostic tool for patients with acute ischemic stroke treated with intravenous thrombolysis: a validation study.

BACKGROUND: Stroke is one of the major causes of disability and mortality worldwide. Up to 30% of individuals who experience stroke die within 30 days, and more than 50% of those who survive will have some degree of disability. There are some predetermining factors based on admission data that could be used to objectively assess the odds of poor outcomes, including the Ischemic Stroke Predictive Risk Score (IScore). OBJECTIVE: To analyze and validate the IScore in patients undergoing intravenous thrombolysis for stroke and compare the results of this predictor with actual death and disability outcomes. METHODS: In a retrospective study, data were collected from a database housed at the Stroke Unit of the Teaching Hospital of Universidade Federal do Paraná, Southern Brazil. The IScore was applied to admission data from 239 patients, and the results were compared with actual outcomes (death and disability) within 30 days and 1 year after the stroke event. Data analysis was performed using an analysis of the receiver operating characteristic (ROC) curve to determine the sensitivity and specificity of the IScore in the study population. RESULTS: The IScore demonstrated moderate sensitivity and high specificity in patients with stroke who underwent thrombolysis when evaluated after 30 days and 1 year of the event. CONCLUSIONS: The IScore can be applied to in stroke patients undergoing thrombolysis; therefore, it may be used as an objective prognostic tool to guide clinical decision-making. Understanding the prognosis of patients in the acute phase can assist clinicians in making the best therapeutic decisions and enable better end-of-life care.

ANTECEDENTES: O acidente vascular cerebral (AVC) é uma das principais causas de morte e incapacidade no mundo. Até 30% dos indivíduos evoluem a óbito nos primeiros 30 dias. Dos sobreviventes, mais da metade ficam com alguma sequela. Certas variáveis identificadas já na admissão podem sinalizar maior risco de desfecho desfavorável. Uma dessas ferramentas prognósticas é a Escala de Previsão de Riscos de AVC Isquêmico (Ischemic Stroke Predictive Risk Score, IScore, em inglês). OBJETIVO: Analisar e validar a aplicação do IScore em pacientes com AVC isquêmico submetidos a trombólise endovenosa e comparar os resultados obtidos com a aplicação da escala aos verdadeiros desfechos de morte e incapacidade funcional. MéTODOS: Trata-se de um estudo retrospectivo, cujos dados foram obtidos do banco de dados da Unidade de AVC do Hospital de Clínicas da Universidade Federal do Paraná. A IScore foi aplicada conforme os dados de admissão de 239 pacientes. Os pacientes foram acompanhados ambulatorialmente, e os resultados da escala foram comparados aos desfechos reais de mortalidade e incapacidade. Os resultados foram demonstrados por meio da curva característica de operação do receptor (receiver operating characteristic, ROC, em inglês) para determinar sensibilidade e especificidade da escala. RESULTADOS: Em pacientes com AVC submetidos a trombólise, a IScore demonstrou moderada sensibilidade e alta especificidade para predizer desfechos tanto de óbito quanto de incapacidade, nos intervalos de 30 dias e 1 ano após o evento. CONCLUSõES: A IScore pode ser aplicada em pacientes com AVC isquêmico, na população específica submetida a trombólise; portanto, pode ser usada como uma ferramenta prognóstica útil, que pode guiar decisões terapêuticas. Entender o prognóstico de paciente na fase aguda pode auxiliar os clínicos a fazer as melhores decisões terapêuticas e possibilitar melhores cuidados ao fim da vida.

Quality of life: predictors and outcomes after stroke in a Brazilian public hospital.

BACKGROUND: Some scales are applied after stroke to measure functional independence but qualify of life (QoL) is sometimes neglected in this scenario. OBJECTIVE: To analyze predictors and outcomes of QoL after stroke using a validated scale in our population. METHODS: Our study included patients who had their first ischemic stroke and were followed in the outpatient clinic for at least 6 months from stroke index. Disability status was assessed using the modified Rankin scale (mRS), the Barthel index (BI), and the Lawton and Brody scale. Quality of life was assessed by a stroke-specific QoL (SSQoL) scale. Statistical significance was accepted for p < 0.05. The estimated measure of association was the odds ratio (OR) for which 95% confidence intervals (95%Cis) were presented. RESULTS: Of 196 patients studied, the median age was 60.4 (±13.4) years, and 89 (45.40%) of the patients were female. In a stepwise model considering risk factors, basic activities of daily living scales, satisfaction with life, and outcomes, we found four independent variables related to a poor QoL after stroke, namely hypertension, non-regular rehabilitation, not returning to work, and medical complications. The National Institutes of Health stroke scale (NIHSS) score at admission ≥ 9 was also an independent clinical marker. Approximately 30% of all participants had a negative score under 147 points in the SSQoL. CONCLUSIONS: Our results showed that QoL after stroke in a developing country did not seem to differ from those of other countries, although there is a gap in rehabilitation programs in our public system. The functional scales are important tools, but they have failed to predict QoL, in some patients, when compared with specific scales.

ANTECEDENTES: Algumas escalas são aplicadas após o acidente vascular cerebral (AVC) para avaliar a independência funcional, mas a qualidade de vida (QV) às vezes é negligenciada nesse cenário. OBJETIVO: Analisar preditores e desfechos de QV após AVC utilizando uma escala validada em nossa população. MéTODOS: Nosso estudo incluiu pacientes que tiveram seu primeiro AVC isquêmico e foram acompanhados no ambulatório por pelo menos 6 meses após o AVC. A funcionalidade foi avaliada pela escala de Rankin modificada, índice de Barthel e escala de Lawton e Brody. A QV foi avaliada pela ecala de qualidade de vida específica de acidente vascular cerebral (SSQoL). A significância estatística aceita foi p < 0,05. A medida de associação estimada foi o odds ratio (OR), para o qual foram apresentados intervalos de confiança (IC) de 95%. RESULTADOS: Dos 196 pacientes, a média de idade foi de 60,4 (±13,4) anos, sendo 89 (45,40%) do sexo feminino. Em um modelo stepwise considerando fatores de risco, escalas de atividades básicas da vida diária, satisfação com a vida e desfechos, encontramos quatro variáveis independentes relacionadas a uma QV ruim após o AVC, como hipertensão, reabilitação não regular, não retorno ao trabalho e comorbidades pós-AVC. A pontuação NIHSS na admissão ≥ 9 também foi um marcador clínico independente. Aproximadamente 30% de todos os participantes tiveram uma pontuação abaixo de 147 pontos para SSQoL. CONCLUSõES: Nossos resultados mostraram que a QV após AVC em um país em desenvolvimento não parece diferir de outros países, apesar da lacuna nos programas de reabilitação em nosso sistema público. As escalas funcionais são ferramentas importantes, mas falharam em alguns pacientes em predizer a QV quando comparadas com escalas específicas.

Quality of life: predictors and outcomes after stroke in a Brazilian public hospital / Qualidade de vida: preditores e desfechos após acidente vascular cerebral em um hospital público brasileiro

Abstract Background Some scales are applied after stroke to measure functional independence but qualify of life (QoL) is sometimes neglected in this scenario. Objective To analyze predictors and outcomes of QoL after stroke using a validated scale in our population. Methods Our study included patients who had their first ischemic stroke and were followed in the outpatient clinic for at least 6 months from stroke index. Disability status was assessed using the modified Rankin scale (mRS), the Barthel index (BI), and the Lawton and Brody scale. Quality of life was assessed by a stroke-specific QoL (SSQoL) scale. Statistical significance was accepted for p< 0.05. The estimated measure of association was the odds ratio (OR) for which 95% confidence intervals (95%Cis) were presented. Results Of 196 patients studied, the median age was 60.4 (±13.4) years, and 89 (45.40%) of the patients were female. In a stepwise model considering risk factors, basic activities of daily living scales, satisfaction with life, and outcomes, we found four independent variables related to a poor QoL after stroke, namely hypertension, non-regular rehabilitation, not returning to work, and medical complications. The National Institutes of Health stroke scale (NIHSS) score at admission ≥ 9 was also an independent clinical marker. Approximately 30% of all participants had a negative score under 147 points in the SSQoL. Conclusions Our results showed that QoL after stroke in a developing country did not seem to differ from those of other countries, although there is a gap in rehabilitation programs in our public system. The functional scales are important tools, but they have failed to predict QoL, in some patients, when compared with specific scales.

Resumo Antecedentes Algumas escalas são aplicadas após o acidente vascular cerebral (AVC) para avaliar a independência funcional, mas a qualidade de vida (QV) às vezes é negligenciada nesse cenário. Objetivo Analisar preditores e desfechos de QV após AVC utilizando uma escala validada em nossa população. Métodos Nosso estudo incluiu pacientes que tiveram seu primeiro AVC isquêmico e foram acompanhados no ambulatório por pelo menos 6 meses após o AVC. A funcionalidade foi avaliada pela escala de Rankin modificada, índice de Barthel e escala de Lawton e Brody. A QV foi avaliada pela ecala de qualidade de vida específica de acidente vascular cerebral (SSQoL). A significância estatística aceita foi p< 0,05. A medida de associação estimada foi o odds ratio (OR), para o qual foram apresentados intervalos de confiança (IC) de 95%. Resultados Dos 196 pacientes, a média de idade foi de 60,4 (±13,4) anos, sendo 89 (45,40%) do sexo feminino. Em um modelo stepwise considerando fatores de risco, escalas de atividades básicas da vida diária, satisfação com a vida e desfechos, encontramos quatro variáveis independentes relacionadas a uma QV ruim após o AVC, como hipertensão, reabilitação não regular, não retorno ao trabalho e comorbidades pós-AVC. A pontuação NIHSS na admissão ≥ 9 também foi um marcador clínico independente. Aproximadamente 30% de todos os participantes tiveram uma pontuação abaixo de 147 pontos para SSQoL. Conclusões Nossos resultados mostraram que a QV após AVC em um país em desenvolvimento não parece diferir de outros países, apesar da lacuna nos programas de reabilitação em nosso sistema público. As escalas funcionais são ferramentas importantes, mas falharam em alguns pacientes em predizer a QV quando comparadas com escalas específicas.

Stroke in Young Military Men With Heterozygous for MTHFR Gene Mutation or Factor V Leiden Gene Mutation Associated With Patent Foramen Ovale: Report of Two Cases and Therapeutic Strategy.

We report two cases of Brazilian patients (a 22-year-old male and a 48-year-old male) with ischemic stroke, whose arterial vascular study and echocardiographic investigation did not reveal any steno-occlusive arterial disease or typical cardioembolic finding, such as atrial fibrillation or myocardial dysfunction. A transcranial Doppler ultrasound and a transesophageal echocardiogram showed a patent foramen ovale (PFO), and the laboratory screening for coagulation abnormalities showed heterozygosity for MTHFR C677T and A1298C in one of the patients and heterozygosity for factor V Leiden gene mutations in the other patient. The significance of the association of PFO with Methylenetetrahydrofolate (MTHFR) C677T and A1298C variants or factor V Leiden mutation is discussed as a possible cause of ischemic stroke through paradoxical embolism from a venous source. There is a high prevalence of these two mentioned conditions in the general population, so we discuss two cases in which indication for anticoagulant therapy or percutaneous closure of PFO prevails.

Automated evaluation of ASPECTS from brain computerized tomography of patients with acute ischemic stroke.

BACKGROUND AND PURPOSE: Precise evaluation of brain computerized tomography (CT) is a crucial step in acute ischemic stroke evaluation. Electronic Alberta Stroke Program Early CT Score (E-ASPECTS) helps in the selection of patients who may be eligible for thrombolysis. This paper seeks to assess the performance of emergency physicians (EPs) in the evaluation of ASPECTS scores with and without the use of E-ASPECTS and to compare their results with neuroradiologists. METHODS: A total of 116 patients were selected. Initially, two EPs and two neuroradiologists evaluated the admission nonenhanced CT without E-ASPECTS. Then, after 30 days, they re-evaluated the images using E-ASPECTS. Sensitivity, specificity, Matthew's correlation coefficients (MCC), and receiver operating characteristic curves were generated for analysis before and after the software use. RESULTS: Eps' performances improved when they used E-ASPECTS, with their results closer to those obtained by neuroradiologists. In the initial evaluation, MCC values for the two EPs were -0.01 and 0.04, respectively. After the software assistance, they obtained 0.38 and 0.43, respectively, which was closer to the scores obtained by the neuroradiologists (0.53 and 0.39, respectively). DISCUSSION: This is the first study that has specifically compared neuroradiologists' and EPs' performances before and after using E-ASPECTS. E-ASPECTS assisted and improved the evaluation of the images of patients with acute ischemic stroke. CONCLUSION: Artificial intelligence in the emergency room may increase the number of patients treated with tissue-type plasminogen activators.

IScore, a useful prognostic tool for patients with acute ischemic stroke treated with intravenous thrombolysis: a validation study / IScore, uma ferramenta prognóstica útil para pacientes com AVC isquêmico submetidos a trombólise: estudo de validação

Abstract Background Stroke is one of the major causes of disability and mortality worldwide. Up to 30% of individuals who experience stroke die within 30 days, and more than 50% of those who survive will have some degree of disability. There are some predetermining factors based on admission data that could be used to objectively assess the odds of poor outcomes, including the Ischemic Stroke Predictive Risk Score (IScore). Objective To analyze and validate the IScore in patients undergoing intravenous thrombolysis for stroke and compare the results of this predictor with actual death and disability outcomes. Methods In a retrospective study, data were collected from a database housed at the Stroke Unit of the Teaching Hospital of Universidade Federal do Paraná, Southern Brazil. The IScore was applied to admission data from 239 patients, and the results were compared with actual outcomes (death and disability) within 30 days and 1 year after the stroke event. Data analysis was performed using an analysis of the receiver operating characteristic (ROC) curve to determine the sensitivity and specificity of the IScore in the study population. Results The IScore demonstrated moderate sensitivity and high specificity in patients with stroke who underwent thrombolysis when evaluated after 30 days and 1 year of the event. Conclusions The IScore can be applied to in stroke patients undergoing thrombolysis; therefore, it may be used as an objective prognostic tool to guide clinical decision-making. Understanding the prognosis of patients in the acute phase can assist clinicians in making the best therapeutic decisions and enable better end-of-life care.

Resumo Antecedentes O acidente vascular cerebral (AVC) é uma das principais causas de morte e incapacidade no mundo. Até 30% dos indivíduos evoluem a óbito nos primeiros 30 dias. Dos sobreviventes, mais da metade ficam com alguma sequela. Certas variáveis identificadas já na admissão podem sinalizar maior risco de desfecho desfavorável. Uma dessas ferramentas prognósticas é a Escala de Previsão de Riscos de AVC Isquêmico (Ischemic Stroke Predictive Risk Score, IScore, em inglês). Objetivo Analisar e validar a aplicação do IScore em pacientes com AVC isquêmico submetidos a trombólise endovenosa e comparar os resultados obtidos com a aplicação da escala aos verdadeiros desfechos de morte e incapacidade funcional. Métodos Trata-se de um estudo retrospectivo, cujos dados foram obtidos do banco de dados da Unidade de AVC do Hospital de Clínicas da Universidade Federal do Paraná. A IScore foi aplicada conforme os dados de admissão de 239 pacientes. Os pacientes foram acompanhados ambulatorialmente, e os resultados da escala foram comparados aos desfechos reais de mortalidade e incapacidade. Os resultados foram demonstrados por meio da curva característica de operação do receptor (receiver operating characteristic, ROC, em inglês) para determinar sensibilidade e especificidade da escala. Resultados Em pacientes com AVC submetidos a trombólise, a IScore demonstrou moderada sensibilidade e alta especificidade para predizer desfechos tanto de óbito quanto de incapacidade, nos intervalos de 30 dias e 1 ano após o evento. Conclusões A IScore pode ser aplicada em pacientes com AVC isquêmico, na população específica submetida a trombólise; portanto, pode ser usada como uma ferramenta prognóstica útil, que pode guiar decisões terapêuticas. Entender o prognóstico de paciente na fase aguda pode auxiliar os clínicos a fazer as melhores decisões terapêuticas e possibilitar melhores cuidados ao fim da vida.

Stroke-related mortality analysis in Paraná, Brazil, over 10 years.

BACKGROUND: Stroke is the second leading cause of death and disability around the world. OBJECTIVE: The purpose of this study is to evaluate the age- and sex-specific mortality rates related to stroke in the state of Paraná, Brazil, between 2007 and 2016. METHODS: In this cross-sectional study, residents in the state of Paraná were selected by death certificates (from 2007-2016); the basic cause of death was stroke. A descriptive analysis was performed, and mortality rates were calculated with a 95% confidence interval (95% CI) for each year. RESULTS: From 2007 to 2016, there were 62,607 deaths in the state of Paraná due to stroke. Most individuals had medical assistance before death (85.7% in 2007 versus 83.9% in 2016), and most of these deaths occurred in hospitals (73.6% in 2007 versus 74.8% in 2016). Death rates due to stroke increased from 138 (95% CI 135-142) to 163 (95% CI 159-166) per 100,000 inhabitants. This raise occurred mainly in those over 79 years old. For the ages groups of 34 to 44 and 44 to 54 years, mortality rate decreased. CONCLUSIONS: In the past 15 years, despite the advances in the diagnosis and treatment of stroke, there has been an increase in mortality due to stroke in the state of Paraná. This fact is possibly associated with the aging of the population because there was a more pronounced increase in the group over 79 years old. Thus, new health strategies are necessary to improve the survival and quality of life of poststroke individuals.

ANTECEDENTES: O acidente vascular cerebral (AVC) é a segunda principal causa de morte e invalidez em todo o mundo. OBJETIVO: O objetivo desse estudo é avaliar as taxas de mortalidade específicas por idade e sexo relacionadas ao AVC no estado do Paraná, Brasil, entre 2007 e 2016. MéTODOS: Neste estudo transversal, foram selecionados residentes no estado do Paraná por certidões de óbito (de 2007­2016); a causa básica da morte foi AVC. Uma análise descritiva foi realizada e as taxas de mortalidade calculadas com intervalo de confiança de 95% (IC 95%) para cada ano. RESULTADOS: De 2007 a 2016, ocorreram 62.607 óbitos no estado do Paraná por AVC. A maioria dos indivíduos teve assistência médica antes do óbito (85,7% em 2007 contra 83,9% em 2016), e a maioria desses óbitos ocorreu em hospitais (73,6% em 2007 contra 74,8% em 2016). As taxas de mortalidade por AVC aumentaram de 138 (IC 95% 135­142) para 163 (IC 95% 159­166) por 100.000 habitantes. Esse aumento ocorreu principalmente em maiores de 79 anos. Para as faixas etárias de 34 a 44 e 44 a 54 anos, a taxa de mortalidade diminuiu. CONCLUSõES: Nos últimos 15 anos, apesar dos avanços no diagnóstico e tratamento do AVC, houve aumento da mortalidade no estado do Paraná. Este fato está possivelmente associado ao envelhecimento da população, pois houve um aumento mais acentuado no grupo acima de 79 anos. Assim, novas estratégias de saúde são necessárias para melhorar a sobrevida e a qualidade de vida dos indivíduos pós-AVC.

Stroke-related mortality analysis in Paraná, Brazil, over 10 years / Análise da mortalidade relacionada ao acidente vascular cerebral no estado do Paraná, Brasil, ao longo de 10 anos

Abstract Background Stroke is the second leading cause of death and disability around the world. Objective The purpose of this study is to evaluate the age- and sex-specific mortality rates related to stroke in the state of Paraná, Brazil, between 2007 and 2016. Methods In this cross-sectional study, residents in the state of Paraná were selected by death certificates (from 2007-2016); the basic cause of death was stroke. A descriptive analysis was performed, and mortality rates were calculated with a 95% confidence interval (95% CI) for each year. Results From 2007 to 2016, there were 62,607 deaths in the state of Paraná due to stroke. Most individuals had medical assistance before death (85.7% in 2007 versus 83.9% in 2016), and most of these deaths occurred in hospitals (73.6% in 2007 versus 74.8% in 2016). Death rates due to stroke increased from 138 (95% CI 135-142) to 163 (95% CI 159-166) per 100,000 inhabitants. This raise occurred mainly in those over 79 years old. For the ages groups of 34 to 44 and 44 to 54 years, mortality rate decreased. Conclusions In the past 15 years, despite the advances in the diagnosis and treatment of stroke, there has been an increase in mortality due to stroke in the state of Paraná. This fact is possibly associated with the aging of the population because there was a more pronounced increase in the group over 79 years old. Thus, new health strategies are necessary to improve the survival and quality of life of poststroke individuals.

Resumo Antecedentes O acidente vascular cerebral (AVC) é a segunda principal causa de morte e invalidez em todo o mundo. Objetivo O objetivo desse estudo é avaliar as taxas de mortalidade específicas por idade e sexo relacionadas ao AVC no estado do Paraná, Brasil, entre 2007 e 2016. Métodos Neste estudo transversal, foram selecionados residentes no estado do Paraná por certidões de óbito (de 2007-2016); a causa básica da morte foi AVC. Uma análise descritiva foi realizada e as taxas de mortalidade calculadas com intervalo de confiança de 95% (IC 95%) para cada ano. Resultados De 2007 a 2016, ocorreram 62.607 óbitos no estado do Paraná por AVC. A maioria dos indivíduos teve assistência médica antes do óbito (85,7% em 2007 contra 83,9% em 2016), e a maioria desses óbitos ocorreu em hospitais (73,6% em 2007 contra 74,8% em 2016). As taxas de mortalidade por AVC aumentaram de 138 (IC 95% 135-142) para 163 (IC 95% 159-166) por 100.000 habitantes. Esse aumento ocorreu principalmente em maiores de 79 anos. Para as faixas etárias de 34 a 44 e 44 a 54 anos, a taxa de mortalidade diminuiu. Conclusões Nos últimos 15 anos, apesar dos avanços no diagnóstico e tratamento do AVC, houve aumento da mortalidade no estado do Paraná. Este fato está possivelmente associado ao envelhecimento da população, pois houve um aumento mais acentuado no grupo acima de 79 anos. Assim, novas estratégias de saúde são necessárias para melhorar a sobrevida e a qualidade de vida dos indivíduos pós-AVC.

Store-and-forward teleneurology results in a large Brazilian city.

BACKGROUND: Neurology is a high-demand specialty with long waiting lines. Some pathologies require rapid decision-making. Through technology, telemedicine can allow neurological patients to have faster access to specialized assessment. In store-and-forward telemedicine, the specialist physician evaluates data collected by a general practitioner and optimizes screening. OBJECTIVE: The aim of the present study is to evaluate the effectiveness of asynchronous telemedicine, used to refer patients from primary care to neurology, in the city of Curitiba, in southern Brazil. METHODS: A retrospective analysis of all patients referred from primary care to neurology between September 2019 and February 2020. After a request is made by a general medical doctor for a specialist's opinion, 5 neurologists with complete access to patients' records are tasked with the decision-making. The main variables analyzed were clinical reasons for telemedicine request, neurologist decision, final diagnosis, indication for diagnostic procedures, and subsequent follow-up. RESULTS: Between September 2019 and February 2020, 1,035 asynchronous telemedicine consultations were performed. Headache (30.43%), epilepsy (19.03%), and dementia (15.85%) accounted for almost two-thirds of the primary care requests; one-third of the cases (33.62%) required a complementary diagnostic procedure. More than 70% of the cases did not require face-to-face assessment by a neurologist. CONCLUSIONS: In this study, store-and-forward teleneurology successfully reduced the need for in-visit consultation in 70% of cases. Further studies should identify the best opportunities for teleneurology in the city of Curitiba to facilitate better integrated care between primary care providers and neurologists.

ANTECEDENTES: Neurologia é uma especialidade de alta demanda com grandes filas de espera. Algumas doenças necessitam de rapidez na tomada de decisões. A telemedicina permite que pacientes neurológicos tenham acesso mais rápido à avaliação especializada. Na telerregulação, um ramo da telemedicina, o especialista avalia os dados coletados pelo generalista e otimiza a triagem. OBJETIVO: Avaliar a eficácia da telerregulação assíncrona, usada para referenciar pacientes da atenção primária à neurologia, na cidade de Curitiba, no sul do Brasil. MéTODOS: Análise retrospectiva de todos os pacientes referenciados da atenção primária para a especialidade de neurologia, no período entre setembro de 2019 e fevereiro de 2020, em Curitiba, Brasil. Para cada pedido de avaliação do médico generalista, 5 neurologistas experientes tiveram acesso completo ao prontuário para a tomada de decisão. As variáveis analisadas foram: razões para o referenciamento, decisão do especialista, diagnóstico final, indicação de exame complementar e necessidade de acompanhamento com a especialidade. RESULTADOS: Durante o período de estudo, 1.035 telerregulações foram realizadas. Cefaleia (30.43%), epilepsia (19.03%) e demência (15.85%) compreenderam aproximadamente dois terços de todos os pedidos de consulta; para um terço dos casos, o especialista indicou exame complementar. Mais de 70% dos pacientes não necessitaram de consulta presencial com neurologista. CONCLUSõES: A telerregulação assíncrona diminuiu de forma importante a necessidade de avaliação presencial pelo neurologista em 70% dos casos. Através da tecnologia, é possível conseguir melhor integração entre atenção primária e serviços especializados. Ainda são necessários mais estudos para explorar as janelas de oportunidade para a teleneurologia no Brasil.

Store-and-forward teleneurology results in a large Brazilian city / Telerregulação em neurologia e seus resultados em uma grande cidade brasileira

Abstract Background Neurology is a high-demand specialty with long waiting lines. Some pathologies require rapid decision-making. Through technology, telemedicine can allow neurological patients to have faster access to specialized assessment. In store-and-forward telemedicine, the specialist physician evaluates data collected by a general practitioner and optimizes screening. Objective The aim of the present study is to evaluate the effectiveness of asynchronous telemedicine, used to refer patients from primary care to neurology, in the city of Curitiba, in southern Brazil. Methods A retrospective analysis of all patients referred from primary care to neurology between September 2019 and February 2020. After a request is made by a general medical doctor for a specialist's opinion, 5 neurologists with complete access to patients' records are tasked with the decision-making. The main variables analyzed were clinical reasons for telemedicine request, neurologist decision, final diagnosis, indication for diagnostic procedures, and subsequent follow-up. Results Between September 2019 and February 2020, 1,035 asynchronous telemedicine consultations were performed. Headache (30.43%), epilepsy (19.03%), and dementia (15.85%) accounted for almost two-thirds of the primary care requests; one-third of the cases (33.62%) required a complementary diagnostic procedure. More than 70% of the cases did not require face-to-face assessment by a neurologist. Conclusions In this study, store-and-forward teleneurology successfully reduced the need for in-visit consultation in 70% of cases. Further studies should identify the best opportunities for teleneurology in the city of Curitiba to facilitate better integrated care between primary care providers and neurologists.

Resumo Antecedentes Neurologia é uma especialidade de alta demanda com grandes filas de espera. Algumas doenças necessitam de rapidez na tomada de decisões. A telemedicina permite que pacientes neurológicos tenham acesso mais rápido à avaliação especializada. Na telerregulação, um ramo da telemedicina, o especialista avalia os dados coletados pelo generalista e otimiza a triagem. Objetivo Avaliar a eficácia da telerregulação assíncrona, usada para referenciar pacientes da atenção primária à neurologia, na cidade de Curitiba, no sul do Brasil. Métodos Análise retrospectiva de todos os pacientes referenciados da atenção primária para a especialidade de neurologia, no período entre setembro de 2019 e fevereiro de 2020, em Curitiba, Brasil. Para cada pedido de avaliação do médico generalista, 5 neurologistas experientes tiveram acesso completo ao prontuário para a tomada de decisão. As variáveis analisadas foram: razões para o referenciamento, decisão do especialista, diagnóstico final, indicação de exame complementar e necessidade de acompanhamento com a especialidade. Resultados Durante o período de estudo, 1.035 telerregulações foram realizadas. Cefaleia (30.43%), epilepsia (19.03%) e demência (15.85%) compreenderam aproximadamente dois terços de todos os pedidos de consulta; para um terço dos casos, o especialista indicou exame complementar. Mais de 70% dos pacientes não necessitaram de consulta presencial com neurologista. Conclusões A telerregulação assíncrona diminuiu de forma importante a necessidade de avaliação presencial pelo neurologista em 70% dos casos. Através da tecnologia, é possível conseguir melhor integração entre atenção primária e serviços especializados. Ainda são necessários mais estudos para explorar as janelas de oportunidade para a teleneurologia no Brasil.

The importance of the Brazilian Society of Neurological Investigation (SBIN) / A importância da Sociedade Brasileira de Investigação Neurológica (SBIN)

The Brazilian Society of Neurological Research (SBIN) was founded on December 19, 2000, by a group of neurol-ogists headed by Professor Lineu César Werneck, MD, Ph.D., to promote scientific development and cultural diver-sity in neurology and neurosciences. The criteria for members' admission have always been strict, and the group reached 80% of physicians with a Ph.D. degree. However, the conditions to become a member were modified to attract more researchers, especially the younger ones, and neuroscientists from other areas of health and biology. The scientific events were the primary goal of SBIN. Eighteen editions were performed. The board and members of the SBIN recognized that the Brazilian Academy of Neurology, and the other societies that encouraged the neuro-sciences, were working to continue the exponential increase of scientific production in the neurosciences in Brazil, realizing that their purposes were fulfilled. The society was dissolved in December 2020 (AU)

A Sociedade Brasileira de Investigação Neurológica (SBIN) foi fundada em 19 de dezembro de 2000 por um grupo de neurologistas capitaneados pelo Prof. Dr. Lineu César Werneck, com a finalidade de promover o desenvolvimento científico e cultural na neurologia e nas neurociências. Os critérios de admissão de membros sempre foram rígi-dos, tendo o grupo alcançado 80% de médicos com doutorado. Entretanto, as condições para se tornar membro foram modificadas com a intenção de atrair mais pesquisadores, principalmente os mais jovens, e neurocientistas de outras áreas da saúde e da biologia. Os eventos científicos foram o objetivo maior da SBIN. Foram realizadas 18 edições. A diretoria e os membros da SBIN reconheceram que a Academia Brasileira de Neurologia, e as outras sociedades de incentivo às neurociências, estavam trabalhando para a continuidade do aumento exponencial da produção científica em ciências neurológicas no Brasil, compreendendo que seus propósitos estavam cumpridos. A sociedade se desfez em dezembro de 202 (AU)

Comparison of right-to-left shunt characteristics in cryptogenic embolic ischemic stroke and non-cardioembolic ischemic stroke.

BACKGROUND: Patent foramen ovale (PFO) has been considered a potential mechanism of embolic stroke of undetermined origin. OBJECTIVE: The aim of the present study was to identify the features of the right-to-left shunt (RLS) in patients with undetermined embolic ischemic stroke and compare them with those of patients with non-cardioembolic ischemic stroke. METHODS: A retrospective study was conducted with 168 patients with stroke and RLS separated into the following two groups: the undetermined embolic stroke group (UES group) and non-cardioembolic stroke group (NCES group). All patients were assessed by transcranial Doppler to evaluate the presence and quantification of microembolic signals (MES) at rest and under Valsalva maneuver. RESULTS: Of all patients evaluated in the current study, 96 were included in the UES group and 72 in the NCES group. In the UES group, 65 patients had RLS with ≥10 MES (67.7%), which was higher than that observed in the NCES group (51.4%, p=0.038). According to the moment of the cardiac cycle, 75 patients (78.1%) in the UES group had a positive test at rest compared to 42 (58.3%) in the NCES group (p=0.007). CONCLUSIONS: The current study demonstrated that almost 70% of patients with undetermined embolic stroke and PFO presented a large RLS and more than 75% had RLS at rest. These findings suggest that the size of the shunt should be taken into account when evaluating whether PFO could be a possible mechanism underlying cryptogenic stroke.

Embolic Stroke of Undetermined Source (ESUS) and Stroke in Atrial Fibrillation Patients: not so Different after all?

Abstract Background: Stroke related to atrial fibrillation (AF) is associated with high recurrence and mortality rates. Embolic Stroke of Undetermined Source (ESUS) is associated with fewer vascular risk factors, less disability, and a high recurrence rate. Objective: To compare risk factors, functional outcomes and the occurrence of primary endpoint (a composite of recurrent stroke, cardiovascular death, and myocardial infarction) between AF stroke and ESUS patients. Method: A retrospective analysis was conducted including all consecutive patients with first-ever ischemic stroke admitted to the Hospital de Clinicas (Clinical Hospital) of the Federal University of Paraná from October 2012 to January 2017 (n=554). There were 61 patients with stroke due to AF and 43 due to ESUS. Both groups were compared for demographic characteristics and vascular risk factors. Logistic regression models were performed to assess the impact of each variable on the primary endpoint in a 12-month follow-up. Statistical significance was considered for p-values < 0.05. Results: ESUS patients, as compared to AF patients, were younger and more likely to be smokers. ESUS patients presented a mean CHADS2VASc score of 4, while the AF group presented a score of 5 (p <0.001). The primary endpoint was observed in 9 (20.9%) ESUS and 11 (18.0%) AF patients over a 12-month period (p=0.802). Higher glucose levels upon hospital admission (p=0.020) and a higher modified Rankin Scale upon hospital discharge (p=0.020) were predictors of the primary endpoint occurrence. Conclusion: AF and ESUS stroke patients presented very similar independence rates upon hospital discharge and outcomes after 12 months, despite some baseline differences, including stroke recurrence, vascular death, and myocardial infarction.