ABO blood group system and occurrence of ischemic stroke.

BACKGROUND: Ischemic stroke (IS) is a multifactorial disease that presents high rates of morbimortality in Brazil. Several studies proved that there is a link between the ABO blood group system and the occurrence of thrombotic events. Nonetheless, its association with IS is not well established. OBJECTIVE: For that reason, the purpose hereof was to investigate the relation between the ABO blood groups and the occurrence of IS in a Brazilian cohort of cerebrovascular diseases. METHODS: Five hundred and twenty-nine subjects were included over 12 months, from which 275 presented an IS episode and 254 composed the control group. Blood samples were drawn for direct and reverse serotyping. The control and IS groups were compared regarding the traditional risk factors and the distribution of the ABO blood groups. RESULTS: The IS group presented a higher prevalence of systemic arterial hypertension (SAH), diabetes mellitus, smoking habits, family history, cardiopathy, and sedentary lifestyle in comparison with the control group. The AB blood type prevailed among the patients (5.1 vs. 1.6%; p<0.05) and this group had more SAH cases in comparison with the O type group (92.9 vs. 67.3%; p<0.05). CONCLUSIONS: Our results suggest that the occurrence of IS is more frequent among patients of the AB blood type.

ABO blood group system and occurrence of ischemic stroke / Sistema ABO de grupos sanguíneos e ocorrência de acidente vascular cerebral isquêmico

ABSTRACT Background: Ischemic stroke (IS) is a multifactorial disease that presents high rates of morbimortality in Brazil. Several studies proved that there is a link between the ABO blood group system and the occurrence of thrombotic events. Nonetheless, its association with IS is not well established. Objective: For that reason, the purpose hereof was to investigate the relation between the ABO blood groups and the occurrence of IS in a Brazilian cohort of cerebrovascular diseases. Methods: Five hundred and twenty-nine subjects were included over 12 months, from which 275 presented an IS episode and 254 composed the control group. Blood samples were drawn for direct and reverse serotyping. The control and IS groups were compared regarding the traditional risk factors and the distribution of the ABO blood groups. Results: The IS group presented a higher prevalence of systemic arterial hypertension (SAH), diabetes mellitus, smoking habits, family history, cardiopathy, and sedentary lifestyle in comparison with the control group. The AB blood type prevailed among the patients (5.1 vs. 1.6%; p<0.05) and this group had more SAH cases in comparison with the O type group (92.9 vs. 67.3%; p<0.05). Conclusions: Our results suggest that the occurrence of IS is more frequent among patients of the AB blood type.

RESUMO Antecedentes: O acidente vascular cerebral isquêmico (AVCI) é uma doença multifatorial que apresenta altas taxas de morbimortalidade no Brasil. Vários estudos provaram que existe uma ligação entre o sistema ABO de grupos sanguíneos e a ocorrência de eventos trombóticos. No entanto, sua associação com AVCI não está bem estabelecida. Objetivo: Por essa razão, o objetivo deste trabalho foi investigar a relação entre os grupos sanguíneos ABO e a ocorrência de AVCI em uma coorte brasileira de doenças cerebrovasculares. Métodos: Ao longo de 12 meses foram incluídos 529 indivíduos, dos quais 275 apresentaram um episódio de AVCI e 254 compuseram o grupo controle. Amostras de sangue foram coletadas para sorotipagem direta e reversa. Os grupos controle e AVCI foram comparados em relação aos fatores de risco tradicionais e à distribuição dos grupos sanguíneos ABO. Resultados: O grupo AVCI apresentou maior prevalência de hipertensão arterial sistêmica (HAS), diabetes mellitus, tabagismo, história familiar, cardiopatia e estilo de vida sedentário em comparação ao grupo controle. O tipo sanguíneo AB prevaleceu entre os pacientes (5,1 vs. 1,6%; p<0,05) e apresentou mais casos de HAS em comparação ao tipo O (92,9 vs. 67,3%; p<0,05). Conclusões: Nossos resultados sugerem que a ocorrência de AVCI é mais frequente entre os pacientes do tipo sanguíneo AB.

Trends in the Incidence and Mortality of Stroke in Matão, Brazil: The Matão Preventing Stroke (MAPS) Study.

BACKGROUND: Stroke population-based studies in the same setting comparing time trends of rates are a gold standard method to determine the primary prevention status of stroke. Twelve years ago, we measured the stroke incidence and mortality in Matão city, Southeast of Brazil. OBJECTIVE: This second Matão stroke registry study aimed to determine the time trends in the incidence, mortality, case fatality, and functional status of patients with stroke. METHODS: This was a prospective, population-based study known as the Matão Preventing Stroke (MAPS). We determined all incident stroke events that occurred between August 1, 2015, and July 31, 2016. Between the periods of November 1, 2003, to October 31, 2004, and August 1, 2015, to July 31, 2016, the rates were age adjusted to the Brazilian and world population. Functional status was measured by Barthel scale 1 year after the index event. RESULTS: We registered 81 cases of incident stroke. Demographic and cardiovascular risk factors were similar in both periods. The mean age increased by 9%, from 65.2 (95% CI 62.6-67.8) to 71.0 (95% CI 68.1-73.8) years. Between 2003-2004 and 2015-2016, the age-adjusted incidence decreased by 39% (incidence rate ratio [IRR] 0.61; 95% CI 0.46-0.79) and mortality by 50% (IRR 0.50; 95% CI 0.31-0.94). The 1-year case fatality was 26%; approximately 56% of the patients were functionally independent, while 7% had a recurrent stroke. Compared with the results of our first registry study, these outcomes did not differ significantly. CONCLUSION: Our findings agree with those of previous studies, showing a decline in the incidence and mortality of stroke in Brazil. Improvements in local public health care might explain these declines.

Ischemic Stroke and Genetic Variants: In Search of Association with Severity and Recurrence in a Brazilian Population.

OBJECTIVE: The aim of this study was to investigate the relationship between genetic variants in candidate genes and clinical severity and prognosis (recurrence) of ischemic stroke (IS) in a Brazilian population. METHODS: This was a retrospective study based on clinical and demographic data retrieved from the JOINVASC cohort-Epidemiological Study on Cerebrovascular Diseases in Joinville and on respective DNA samples available at the Joinville Stroke Biobank, over the period 2010-2015. Four hundred and thirty-five subjects were included. Patients were divided into large artery atherosclerosis (195 cases) and cardioembolic IS (240 cases) subgroups according to Trial of Org 10172 in the Acute Stroke Treatment standards. The severity of the event was established from the score obtained using the National Institutes of Health Stroke Scale. The genotypic and allelic frequencies of each variant were acquired by Real-Time Polymerase Chain Reaction. The codominance model was considered for the analysis of the genotypes' influence. RESULTS: There was no association between clinical severity and recurrence with variants rs2383207 (CDKN2B-AS1) for atherothrombotic IS and variants rs879324 (ZFHX3), rs966221 (PDE4D), and rs152312 (PDE4D) for cardioembolic IS. The variants rs1396476, rs2910829, rs6843082, and rs2107595 were not in Hardy-Weinberg equilibrium in the evaluated population. CONCLUSIONS: Although this study failed to identify an association between genetic variants and clinical response variability, the need to carry out related studies with larger number of cases covering other populations and genetic variants remains, which would allow the uncovering of hypothetical genetic factors governing stroke outcomes and recurrence.

The impact of acute kidney injury on fatality of ischemic stroke from a hospital-based population in Joinville, Brazil.

INTRODUCTION: The occurrence of acute kidney injury (AKI) after ischemic stroke has been associated to a worse prognosis. There is a lack of Brazilian studies evaluating this issue. This study aimed to describe the impact of AKI after a first-ever ischemic stroke in relation to fatality rate in 30 days. METHODS: This was a retrospective hospital-based cohort. We included patients who had their first ischemic stroke between January to December 2015. AKI was defined by an increase of serum creatinine in relation to baseline value at admission ≥ 0.3 mg/dL or a rise in serum creatinine level by 1.5 times the baseline value at any point in the first week after admission. We performed a univariate and multivariate analysis to evaluate the presence of AKI with fatality in 30 days. RESULTS: The final study population (n=214) had mean age of 66.46 ± 13.73 years, 48.1% were men, the mean NIHSS was 6.33 ± 6.27 and 20 (9.3%) presented AKI. Patients with AKI were older, had a higher score on the NIHSS, and had higher creatinine values on hospital discharge. The 30-day mortality was higher in the AKI subgroup compared to non-AKI (35% vs. 6.2%, p < 0.001). AKI was an independent predictor of fatality after an ischemic stroke but limited by severity of stroke (NIHSS). CONCLUSION: The presence of AKI is an important complication after ischemic stroke. Despite its impact on 30-day fatality, the predictive strength of AKI was limited by the severity of stroke.

The impact of acute kidney injury on fatality of ischemic stroke from a hospital-based population in Joinville, Brazil / O impacto da insuficiência renal aguda na letalidade do acidente vascular cerebral isquêmico de uma população de base hospitalar em Joinville, Brasil

Abstract Introduction: The occurrence of acute kidney injury (AKI) after ischemic stroke has been associated to a worse prognosis. There is a lack of Brazilian studies evaluating this issue. This study aimed to describe the impact of AKI after a first-ever ischemic stroke in relation to fatality rate in 30 days. Methods: This was a retrospective hospital-based cohort. We included patients who had their first ischemic stroke between January to December 2015. AKI was defined by an increase of serum creatinine in relation to baseline value at admission ≥ 0.3 mg/dL or a rise in serum creatinine level by 1.5 times the baseline value at any point in the first week after admission. We performed a univariate and multivariate analysis to evaluate the presence of AKI with fatality in 30 days. Results: The final study population (n=214) had mean age of 66.46 ± 13.73 years, 48.1% were men, the mean NIHSS was 6.33 ± 6.27 and 20 (9.3%) presented AKI. Patients with AKI were older, had a higher score on the NIHSS, and had higher creatinine values on hospital discharge. The 30-day mortality was higher in the AKI subgroup compared to non-AKI (35% vs. 6.2%, p < 0.001). AKI was an independent predictor of fatality after an ischemic stroke but limited by severity of stroke (NIHSS). Conclusion: The presence of AKI is an important complication after ischemic stroke. Despite its impact on 30-day fatality, the predictive strength of AKI was limited by the severity of stroke.

Resumo Introdução: A ocorrência de insuficiência renal aguda (IRA) após acidente vascular cerebral isquêmico (AVCI) está associada a pior prognóstico. Há uma deficiência de estudos brasileiros a respeito dessa questão. O presente estudo teve como objetivo descrever o impacto da IRA após o primeiro episódio de AVCI em relação à taxa de letalidade em 30 dias. Métodos: A presente coorte retrospectiva de base hospitalar incluiu pacientes que sofreram seu primeiro AVCI entre janeiro e dezembro de 2015. IRA foi definida por elevações da creatinina sérica em relação ao valor basal na internação ≥ 0.3 mg/dL ou aumento da creatinina sérica equivalente a 1,5 vez o valor basal em qualquer instante durante a primeira semana após a internação. Foi realizada análise univariada e multivariada para avaliar a presença de IRA com letalidade em 30 dias. Resultados: A população final do estudo (n = 214) apresentou média de idade de 66,46 ± 13,73 anos; 48,1% eram homens; a média de pontuação no NIHSS foi 6,33 ± 6,27; e 20 (9,3%) apresentaram IRA. Pacientes com IRA tinham idade mais avançada, pontuação maior na NIHSS e valores mais elevados de creatinina no momento da alta hospitalar. A mortalidade em 30 dias foi maior no subgrupo com IRA em comparação ao grupo sem IRA (35% vs. 6,2%, p < 0,001). IRA foi preditor independente de mortalidade após AVCI, porém limitado pela gravidade do acidente vascular cerebral (NIHSS). Conclusão: A presença de IRA é uma complicação importante após AVCI. Apesar de seu impacto na letalidade de 30 dias, a força preditiva da IRA foi limitada pela gravidade do AVC.

The cost of stroke in private hospitals in Brazil: a one-year prospective study.

OBJECTIVE: Few studies from low- and middle-income countries have assessed stroke and cerebral reperfusion costs from the private sector. To measure the in-hospital costs of ischemic stroke (IS), with and without cerebral reperfusion, primary intracerebral hemorrhage (PIH), subarachnoid hemorrhage (SAH) and transient ischemic attacks (TIA) in two private hospitals in Joinville, Brazil. METHODS: Prospective disease-cost study. All medical and nonmedical costs for patients admitted with any stroke type or TIA were consecutively determined in 2016-17. All costs were adjusted to the gross domestic product deflator index and purchasing power parity. RESULTS: We included 173 patients. The median cost per patient was US$3,827 (IQR: 2,800-8,664) for the 131 IS patients; US$2,315 (IQR: 1,692-2,959) for the 27 TIA patients; US$16,442 (IQR: 5,108-33,355) for the 11 PIH patients and US$28,928 (IQR: 12,424-48,037) for the four SAH patients (p < 0.00001). For the six IS patients who underwent intravenous thrombolysis, the median cost per patient was US$11,463 (IQR: 8,931-14,291), and for the four IS patients who underwent intra-arterial thrombectomy, the median cost per patient was US$35,092 (IQR: 31,833-37,626; p < 0.0001). A direct correlation was found between cost and length of stay (r = 0.67, p < 0.001). CONCLUSIONS: Stroke is a costly disease. In the private sector, the costs of cerebral reperfusion for IS treatment were three-to-ten times higher than for usual treatments. Therefore, cost-effectiveness studies are urgently needed in low- and middle-income countries.

The cost of stroke in a public hospital in Brazil: a one-year prospective study.

OBJECTIVE: Low- and middle-income countries face tight health care budgets, not only new resources, but also costly therapeutic resources for treatment of ischemic stroke (IS). However, few prospective data about stroke costs including cerebral reperfusion from low- and middle-income countries are available. To measure the costs of stroke care in a public hospital in Joinville, Brazil. METHODS: We prospectively assessed all medical and nonmedical costs of inpatients admitted with a diagnosis of any stroke or transient ischemic attack over one year, analyzed costs per type of stroke and treatment, length of stay (LOS) and compared hospital costs with government reimbursement. RESULTS: We evaluated 274 patients. The total cost for the year was US$1,307,114; the government reimbursed the hospital US$1,095,118. We found a significant linear correlation between LOS and costs (r = 0.71). The median cost of 134 IS inpatients who did not undergo cerebral reperfusion (National Institutes of Health Stroke Scale [NIHSS] median = 3 ) was US$2,803; for IS patients who underwent intravenous (IV) alteplase (NIHSS 10), the median was US$5,099, and for IS patients who underwent IV plus an intra-arterial (IA) thrombectomy (NIHSS > 10), the median cost was US$10,997. The median costs of a primary intracerebral hemorrhage, subarachnoid hemorrhage, and transient ischemic attack were US$2,436, US$8,031 and US$2,677, respectively. CONCLUSIONS: Reperfusion treatments were two-to-four times more expensive than conservative treatment. A cost-effectiveness study of the IS treatment option is necessary.

The cost of stroke in private hospitals in Brazil: a one-year prospective study / O custo do AVC em hospitais privados no Brasil: um estudo prospectivo

ABSTRACT Few studies from low- and middle-income countries have assessed stroke and cerebral reperfusion costs from the private sector. Objective To measure the in-hospital costs of ischemic stroke (IS), with and without cerebral reperfusion, primary intracerebral hemorrhage (PIH), subarachnoid hemorrhage (SAH) and transient ischemic attacks (TIA) in two private hospitals in Joinville, Brazil. Methods Prospective disease-cost study. All medical and nonmedical costs for patients admitted with any stroke type or TIA were consecutively determined in 2016-17. All costs were adjusted to the gross domestic product deflator index and purchasing power parity. Results We included 173 patients. The median cost per patient was US$3,827 (IQR: 2,800-8,664) for the 131 IS patients; US$2,315 (IQR: 1,692-2,959) for the 27 TIA patients; US$16,442 (IQR: 5,108-33,355) for the 11 PIH patients and US$28,928 (IQR: 12,424-48,037) for the four SAH patients (p < 0.00001). For the six IS patients who underwent intravenous thrombolysis, the median cost per patient was US$11,463 (IQR: 8,931-14,291), and for the four IS patients who underwent intra-arterial thrombectomy, the median cost per patient was US$35,092 (IQR: 31,833-37,626; p < 0.0001). A direct correlation was found between cost and length of stay (r = 0.67, p < 0.001). Conclusions Stroke is a costly disease. In the private sector, the costs of cerebral reperfusion for IS treatment were three-to-ten times higher than for usual treatments. Therefore, cost-effectiveness studies are urgently needed in low- and middle-income countries.

RESUMO Poucos estudos determinam o custo do AVC em países de baixa e média renda nos setores privados. Objetivos Mensurar o custo hospitalar do tratamento do(a): AVC isquêmico com e sem reperfusão cerebral, hemorragia intracerebral primária (HIP), hemorragia subaracnóidea e ataque isquêmico transitório (AIT) em hospitais privados de Joinville, Brasil. Métodos Estudo prospectivo de custo de doença. Os custos médicos e não médicos dos pacientes admitidos com qualquer tipo de AVC ou AIT foram consecutivamente verificados em 2016-17. Os valores foram ajustados ao índice do deflator do produto interno bruto e à paridade do poder de compra. Resultados Nós incluímos 173 pacientes. A mediana de custo por paciente foi de US$ 3.827 (IQR: 2.800-8.664) para os 131 pacientes com AVC isquêmico; US$ 2.315 (1.692-2.959) para os 27 pacientes com AIT; US$ 16.442 (5.108-33.355) para os 11 pacientes com HIP e US$ 28.928 (12.424-48.037) para os quatro pacientes com HSA (p < 0,00001). Para seis pacientes submetidos à trombólise intravenosa, a mediana do custo por paciente foi de US$ 11.463 (8.931-14.291) e, para quatro pacientes submetidos à trombectomia intra-arterial, a mediana de custo por paciente foi de US$ 35.092 (31.833-37.626; p < 0,0001). Uma correlação direta foi encontrada entre custo e tempo de permanência (r = 0,67, p < 0,001). Conclusão O AVC é uma doença cara. Em ambiente privado, os custos da reperfusão cerebral foram de três a dez vezes superiores aos tratamentos habituais do AVC isquêmico. Portanto, estudos de custo-efetividade são urgentemente necessários em países de baixa e média rendas.

The cost of stroke in a public hospital in Brazil: a one-year prospective study / Custo do AVC em um hospital público no Brasil: um estudo prospectivo de um ano

ABSTRACT Low- and middle-income countries face tight health care budgets, not only new resources, but also costly therapeutic resources for treatment of ischemic stroke (IS). However, few prospective data about stroke costs including cerebral reperfusion from low- and middle-income countries are available. Objective To measure the costs of stroke care in a public hospital in Joinville, Brazil. Methods We prospectively assessed all medical and nonmedical costs of inpatients admitted with a diagnosis of any stroke or transient ischemic attack over one year, analyzed costs per type of stroke and treatment, length of stay (LOS) and compared hospital costs with government reimbursement. Results We evaluated 274 patients. The total cost for the year was US$1,307,114; the government reimbursed the hospital US$1,095,118. We found a significant linear correlation between LOS and costs (r = 0.71). The median cost of 134 IS inpatients who did not undergo cerebral reperfusion (National Institutes of Health Stroke Scale [NIHSS] median = 3 ) was US$2,803; for IS patients who underwent intravenous (IV) alteplase (NIHSS 10), the median was US$5,099, and for IS patients who underwent IV plus an intra-arterial (IA) thrombectomy (NIHSS > 10), the median cost was US$10,997. The median costs of a primary intracerebral hemorrhage, subarachnoid hemorrhage, and transient ischemic attack were US$2,436, US$8,031 and US$2,677, respectively. Conclusions Reperfusion treatments were two-to-four times more expensive than conservative treatment. A cost-effectiveness study of the IS treatment option is necessary.

RESUMO Os países de baixa e media renda enfrentam orçamentos apertados na saúde, não somente devido aos novos recursos terapêuticos, mas relacionado ao custo oneroso do tratamento do acidente vascular cerebral. No entanto, poucos dados prospectivos sobre os custos do AVC, incluindo reperfusão cerebral de países de baixa e média renda estão disponíveis. Objetivo Mensurar os custos do atendimento ao AVC em um hospital público. Métodos Avaliamos prospectivamente todos os custos médicos e não médicos de pacientes internados com diagnóstico de acidente vascular cerebral ou AIT durante 1 ano, analisamos os custos por tipo de AVC e tratamento, tempo de permanência e comparamos os custos hospitalares com o reembolso governamental. Resultados Foram avaliados 274 pacientes. O custo total em um ano foi de US$ 1.307,114; o governo reembolsou o hospital no valor de US$ 1.095.118. Encontramos uma correlação linear significativa entre LOS e custos (r = 0,71). A mediana do custo do AVCI em 134 pacientes que não sofreram reperfusão cerebral (National Institutes of Health Stroke Scale [NIHSS] mediana = 3) foi de US$ 2.803; para pacientes submetidos a alteplase intravenosa (IV) (NIHSS 10), a mediana foi de US$ 5.099 e para os pacientes submetidos a trombectomia intra-arterial (IA) (NIHSS > 10), o custo mediano foi de US$ 10.997. A mediana do custo de uma hemorragia intracerebral primária, hemorragia subaracnóidea e AIT foram de US$ 2.436, US$ 8.031 e US$ 2.677, respectivamente. Conclusões Os tratamentos de reperfusão foram duas a quatro vezes mais caros do que o tratamento conservador. Estudo de custo-efetividade para o tratamento do AVC são necessários.

Association and interaction of genetic variants with occurrence of ischemic stroke among Brazilian patients.

Ischemic Stroke (IS) is a severe and complex disorder of high morbidity and mortality rates associated with clinical, environmental, and genetic predisposing factors. Despite previous studies have associated genetic variants to stroke, inconsistent results from different populations pointed to the genetic heterogeneity for IS. Therefore, we may hypothesize that an interaction effect among genetic variants could contribute to IS occurrence rather than genetic variants independently. In this context, we investigated the association and interaction between genetic variants and large-artery atherosclerosis IS (LAAS-IS) and cardioembolic IS (CE-IS). We genotyped 435 patients (195 LAAS-IS; 240 CE-IS) and 535 controls from a population of Joinville, Santa Catarina, Brazil. Association and interaction analysis were performed by chi-square test and Multifactor-dimensionality Reduction test. We found an association between rs2383207*A allele, nearby CDKN2B-AS1, and LAAS-IS [OR 2.35 (95% CI = 1.79-3.08); p = 4.66 × 10-10]. We found an interaction among rs2910829, rs966221 and rs152312, with an accuracy of 0.62 (p = 4.3 × 10-5) demonstrating the interaction effect among variants from different genes can contribute to CE-IS risk. Further prediction analysis confirmed that clinical information, such as hypertension and dyslipidemia, presented high accuracy to predict LAAS-IS (86.47%) and CE-IS (90.47%); however, the inclusion of genetic variant information did not increase the accuracy.

High five-year mortality rates of ischemic stroke subtypes: A prospective cohort study in Brazil.

BACKGROUND: Studies regarding long-term outcomes of ischemic stroke subtypes are scarce in low- and middle-income countries. We aimed to measure the five-year prognosis of ischemic stroke subtypes in Joinville, Brazil. METHODS: All first-ever ischemic strokes that occurred in Joinville in 2010 were followed-up for five years. RESULTS: We included 334 ischemic stroke patients. Over five years, 156 died, 51 had a recurrent stroke, and 128 were free of recurrent stroke. The overall cumulative risk of death was 17% (95% CI, 13% to 22%) at 30 days and 47% (95% CI, 41% to 52%) after five years. Undetermined with incomplete investigation ischemic stroke had a significantly worse survival probability (ß -4.91; 95% CI, -6.31 to -3.50; p < 0.001), followed by cardioembolic ischemic stroke (ß -3.07; 95% CI, -4.32 to -1.83; p < 0.001) and large artery disease ischemic stroke (ß -1.95; 95% CI, -3.30 to -0.60; p = 0.005). The survival probability of undetermined with negative investigation or cryptogenic ischemic stroke did not differ significantly from small artery disease ischemic stroke (ß -1.022; 95% CI, -3.37 to -1.43; p = 0.414). The five-year mortality for small artery disease ischemic stroke was 30% (95% CI, 22% to 39%) and 47% (95% CI, 35% to 60%) for large artery ischemic stroke. The risk of stroke recurrence was 2% in the first year and 5% in the second year. The proportion of disability among survivors in the first month ranged from 8% (95% CI, 3-15) for small artery disease ischemic stroke to 40% (95% CI, 30-52) for cardioembolic ischemic stroke patients. CONCLUSIONS: Cardioembolic and undetermined with incomplete investigation ischemic stroke sub-types have a poor long-term prognosis. An alarming finding was that our patients with both small and large artery ischemic stroke had higher five-year mortality rates compared with subjects from high-income countries.

Prevalence of obesity among stroke patients in five Brazilian cities: a cross-sectional study.

OBJECTIVE: There is gap in knowledge about obesity prevalence in stroke patients from low- and middle-income countries. Therefore, we aimed to measure the prevalence of overweight and obesity status among patients with incident stroke in Brazil. METHODS: In a cross-sectional study, we measured the body mass index (BMI) of ischemic and hemorrhagic stroke patients. The sample was extracted in 2016, from the cities of Sobral (CE), Sertãozinho (SP), Campo Grande (MS), Joinville (SC) and Canoas (RS). RESULTS: In 1,255 patients with first-ever strokes, 64% (95% CI, 62-67) were overweight and 26% (95%CI, 24-29) were obese. The obesity prevalence ranged from 15% (95%CI, 9-23) in Sobral to 31% (95%CI, 18-45) in Sertãozinho. Physical inactivity ranged from 53% (95%CI, 43-63) in Sobral to 80% (95%CI, 73-85) in Canoas. CONCLUSIONS: The number of overweight patients with incident stroke is higher than the number of patients with stroke and normal BMI. Although similar to other findings in high-income countries, we urgently need better policies for obesity prevention.

Prevalence of obesity among stroke patients in five Brazilian cities: a cross-sectional study / Prevalência de excesso de peso em pacientes com acidente vascular cerebral em cinco cidades brasileiras

ABSTRACT Objective There is gap in knowledge about obesity prevalence in stroke patients from low- and middle-income countries. Therefore, we aimed to measure the prevalence of overweight and obesity status among patients with incident stroke in Brazil. Methods In a cross-sectional study, we measured the body mass index (BMI) of ischemic and hemorrhagic stroke patients. The sample was extracted in 2016, from the cities of Sobral (CE), Sertãozinho (SP), Campo Grande (MS), Joinville (SC) and Canoas (RS). Results In 1,255 patients with first-ever strokes, 64% (95% CI, 62-67) were overweight and 26% (95%CI, 24-29) were obese. The obesity prevalence ranged from 15% (95%CI, 9-23) in Sobral to 31% (95%CI, 18-45) in Sertãozinho. Physical inactivity ranged from 53% (95%CI, 43-63) in Sobral to 80% (95%CI, 73-85) in Canoas. Conclusions The number of overweight patients with incident stroke is higher than the number of patients with stroke and normal BMI. Although similar to other findings in high-income countries, we urgently need better policies for obesity prevention.

RESUMO Objetivo Há uma lacuna de conhecimento sobre a prevalência de obesidade em pacientes com AVC (acidente vascular cerebral) de países de baixa e média renda. Portanto, objetivamos medir a prevalência de sobrepeso e obesidade entre pacientes com AVC no Brasil. Métodos Em um estudo transversal, medimos o índice de massa corporal (IMC) em pacientes com AVC isquêmico e hemorrágico. A amostra foi extraída em 2016, nas cidades de Sobral (CE), Sertãozinho (SP), Campo Grande (MS), Joinville (SC) e Canoas (RS). Resultados Entre 1255 casos de AVC, 64% (95%CI, 62-67) apresentavam sobrepeso e 26% (95%CI, 24-29) obesidade. A prevalência de obesidade variou de 15% (95%CI, 9-23) em Sobral a 31% (95%CI, 18-45) em Sertãozinho. Conclusões A quantidade de pacientes com AVC e IMC anormal é maior do que a de pacientes com AVC e IMC normal. Embora esta prevalência seja similar às de países de alta renda, precisamos urgentemente de melhores políticas de prevenção da obesidade. Atividade física deveria ser parte da prescrição médica.

Factors contributing to sex differences in functional outcomes and participation after stroke.

OBJECTIVE: To examine factors contributing to the sex differences in functional outcomes and participation restriction after stroke. METHODS: Individual participant data on long-term functional outcome or participation restriction (i.e., handicap) were obtained from 11 stroke incidence studies (1993-2014). Multivariable log-binomial regression was used to estimate the female:male relative risk (RR) of poor functional outcome (modified Rankin Scale score >2 or Barthel Index score <20) at 1 year (10 studies, n = 4,852) and 5 years (7 studies, n = 2,226). Multivariable linear regression was used to compare the mean difference (MD) in participation restriction by use of the London Handicap Scale (range 0-100 with lower scores indicating poorer outcome) for women compared to men at 5 years (2 studies, n = 617). For each outcome, study-specific estimates adjusted for confounding factors (e.g., sociodemographics, stroke-related factors) were combined with the use of random-effects meta-analysis. RESULTS: In unadjusted analyses, women experienced worse functional outcomes after stroke than men (1 year: pooled RRunadjusted 1.32, 95% confidence interval [CI] 1.18-1.48; 5 years: RRunadjusted 1.31, 95% CI 1.16-1.47). However, this difference was greatly attenuated after adjustment for age, prestroke dependency, and stroke severity (1 year: RRadjusted 1.08, 95% CI 0.97-1.20; 5 years: RRadjusted 1.05, 95% CI 0.94-1.18). Women also had greater participation restriction than men (pooled MDunadjusted -5.55, 95% CI -8.47 to -2.63), but this difference was again attenuated after adjustment for the aforementioned factors (MDadjusted -2.48, 95% CI -4.99 to 0.03). CONCLUSIONS: Worse outcomes after stroke among women were explained mostly by age, stroke severity, and prestroke dependency, suggesting these potential targets to improve the outcomes after stroke in women.

Joinville stroke biobank: study protocol and first year's results.

Aiming to contribute to studies that use detailed clinical and genomic information of biobanks, we present the initial results of the first Latin American Stroke Biobank. METHODS: Blood samples were collected from patients included in the Joinville Stroke Registry and four Brazilian cities. Demographic socio-economic data, cardiovascular risk factors, Causative Classification System for Ischemic Stroke, Trial of Org 10172 in Acute Stroke Treatment and National Institutes of Health scores, functional stroke status (modified Rankin) and brain images were recorded. Additionally, controls from both geographic regions were recruited. High-molecular-weight genomic DNA was obtained from all participants. RESULTS: A total of 2,688 patients and 3,282 controls were included. Among the patients, 76% had ischemic stroke, 12% transient ischemic attacks, 9% hemorrhagic stroke and 3% subarachnoid hemorrhage. Patients with undetermined ischemic stroke were most common according the Trial of Org 10172 in Acute Stroke Treatment (40%) and Causative Classification System for Ischemic Stroke (47%) criteria. A quarter of the patients were under 55 years of age at the first-ever episode. CONCLUSIONS: We established the Joinville Stroke Biobank and discuss its potential for contributing to the understanding of the risk factors leading to stroke.

Joinville stroke biobank: study protocol and first year's results / Biobanco de acidente cerebrovascular de Joinville: protocolo de estudos e resultados dos primeiros anos

ABSTRACT Aiming to contribute to studies that use detailed clinical and genomic information of biobanks, we present the initial results of the first Latin American Stroke Biobank. Methods: Blood samples were collected from patients included in the Joinville Stroke Registry and four Brazilian cities. Demographic socio-economic data, cardiovascular risk factors, Causative Classification System for Ischemic Stroke, Trial of Org 10172 in Acute Stroke Treatment and National Institutes of Health scores, functional stroke status (modified Rankin) and brain images were recorded. Additionally, controls from both geographic regions were recruited. High-molecular-weight genomic DNA was obtained from all participants. Results: A total of 2,688 patients and 3,282 controls were included. Among the patients, 76% had ischemic stroke, 12% transient ischemic attacks, 9% hemorrhagic stroke and 3% subarachnoid hemorrhage. Patients with undetermined ischemic stroke were most common according the Trial of Org 10172 in Acute Stroke Treatment (40%) and Causative Classification System for Ischemic Stroke (47%) criteria. A quarter of the patients were under 55 years of age at the first-ever episode. Conclusions: We established the Joinville Stroke Biobank and discuss its potential for contributing to the understanding of the risk factors leading to stroke.

RESUMO Com o objetivo de contribuir para estudos que utilizam informações clínicas e genômicas de biobancos, apresentamos os resultados iniciais do primeiro Biobanco Latinoamericano em Acidente Vascular Cerebral (AVC). Métodos: Foram coletadas amostras de sangue de pacientes recrutados pelo Registro de AVC de Joinville e posteriormente de quatro cidades brasileiras. Foram registrados dados socioeconômicos demográficos, fatores de risco cardiovasculares, Causative Classification System (CCS), Trial of Org 10172 in Acute Stroke Treatment, National Institutes of Health, estado funcional (Rankin modificado) e imagens cerebrais. Adicionalmente, foram recrutados controles das regiões geográficas correspondentes. Obteve-se DNA genômico de todos participantes. Resultados: Foram incluídos 2688 pacientes e 3282 controles. Entre os pacientes, 76% tiveram AVC isquêmico, 12% ataques isquêmicos transitórios, 9% AVC hemorrágico e 3% hemorragia subaracnóidea. Os casos indeterminados foram os mais frequentes e classificados de acordo com TOAST (40%) e CCS (47%). Um quarto dos pacientes tinham menos de 55 anos no primeiro evento. Conclusões: Estabelecemos o Joinville Stroke Biobank, e discutimos aqui seu potencial na compreensão dos fatores de risco do AVC.

Increase of Stroke Incidence in Young Adults in a Middle-Income Country: A 10-Year Population-Based Study.

BACKGROUND AND PURPOSE: The incidence of stroke is on the rise in young adults in high-income countries. However, there is a gap of knowledge about trends in stroke incidence in young adults from low- and middle-income countries. We aimed to measure trends in incidence of ischemic stroke (IS) and intracerebral hemorrhage (IH) in young people from 2005 to 2015 in Joinville, Brazil. METHODS: We retrospectively ascertained all first-ever IS subtypes and IH that occurred in Joinville in the periods of 2005 to 2006, 2010 to 2011, and 2014 to 2015. Poisson regression was used to calculate incidence rate ratios of all strokes, IS, and IH. We also compared the prevalence of risk factors and extension of diagnostic work-up across the 3 periods. RESULTS: For 10 years, we registered 2483 patients (7.5% aged <45 years). From 2005 to 2006 to 2014 to 2015, overall stroke incidence significantly increased by 62% (incidence rate ratios, 1.62; 95% confidence interval, 1.10-2.40) in subjects <45 years and by 29% in those <55 years (incidence rate ratios, 1.29; 95% confidence interval, 1.04-1.60). Incidence of IS increased by 66% (incidence rate ratios, 1.66; 95% confidence interval, 1.09-2.54), but there was no significant change in incidence of IH in subjects <45 years. Smoking rates decreased by 71% (odds ratio, 0.29; 95% confidence interval, 0.12-0.68). CONCLUSIONS: Stroke incidence is rising in young adults in Joinville, Brazil, because of increase in rates of ischemic but not hemorrhagic strokes. We urgently need better policies of cardiovascular prevention in the young.

How Many Patients Become Functionally Dependent after a Stroke? A 3-Year Population-Based Study in Joinville, Brazil.

The decrease in stroke mortality will increase the burden of survivors with functional dependence (FD). The aim of this study was to evaluate how many patients become functionally dependent over 3 years after an incident event in Joinville, Brazil. The proportion of FD (defined as a modified Rankin score 3 to 5) among stroke survivors from the Joinville Stroke Registry was assessed using a validated telephone interview. Incidence of FD after stroke in Joinville in one year was 23.24 per 100,000 population. The overall proportion of FD among stroke survivors at discharge was 32.7%. Of 303 patients with first-ever ischaemic stroke (IS), one-third were FD at discharge, and 12%, 9% and 8%, respectively at 1, 2 and 3 years. Among 37 patients with haemorrhagic stroke (HS), 38% were dependent at discharge, 16% after 1 and 2 years and 14% after 3. Among 27 patients with subarachnoid haemorrhage (SAH), 19% were dependent at discharge and 4% from 1 to 3 years. Among IS subtypes, cardioembolic ones had the worst risk of FD. (RR 19.8; 95% CI: 2.2 to 175.9). Our results showed that one-third of stroke survivors have FD during the first year after stroke in Brazil. Therefore, a city with half a million people might expect 120 new stroke patients with FD each year.

Does the side of middle cerebral artery compromise matters in the mortality after thrombolysis in ischemic stroke? / O lado acometido da artéria cerebral média interfere na mortalidade do acidente vascular isquêmico pós trombólise?

The impact of the side in middle cerebral artery (MCA) ischemic stroke is not well established. Our aim was to analyze the differences between right (RMCA) and left middle cerebral artery (LMCA) stroke in patients submitted to intravenous thrombolysis and the influence of the affected side in the patient’s mortality after 3 months. Method Patients with MCA ischemic stroke submitted to intravenous thrombolysis from March 2010 to December 2011 at two Brazilian Stroke Centers were included. Differences between patients with RMCA and LMCA stroke were identified by univariate analysis. Results Forty-five patients with RMCA stroke and 67 with LMCA stroke were analyzed. Patients with LMCA had a higher incidence of atrial fibrillation (p = 0.031), although patients with RMCA more often had a previous ischemic stroke (p = 0.034). The mortality over 3 months was similar for either side (OR = 1.20 ;0.37 - 4.29, p = 0.772). Conclusion The side of the MCA ischemic stroke did not influence the patients mortality. .

O impacto do lado de acometimento da artéria cerebral média (ACM) não é bem estabelecido. Nosso objetivo é analisar as diferenças entre pacientes com acidente vascular isquêmico (AVCi) de ACM direita (ACMD) e esquerda (ACME) submetidos à trombólise endovenosa e a influência do lado acometido na mortalidade em 3 meses. Método Pacientes com AVCi ACMD e ACME submetidos à trombólise endovenosa entre Março de 2010 a Dezembro de 2012 em duas Unidades de AVC brasileiras foram incluídos. Diferenças entre AVCi ACMD e ACME foram identificadas pela análise univariada. Resultados Quarenta e cinco pacientes com AVCi de ACMD e 67 de ACME foram analisados. Pacientes com AVCi de ACME tiveram maior incidência de fibrilação atrial (p = 0,031), enquanto de ACMD maior de AVCi prévio (p = 0,034). A mortalidade em 3 meses foi similar em ambos os grupos (OR = 1,20; 0,37 -4,29, p = 0,772). Conclusão O lado de acometimento da ACM no AVCi não influencia na mortalidade. .