Barriers to patient recruitment in a poststroke neurorehabilitation multicenter trial in Brazil

There is a high demand for stroke rehabilitation in the Brazilian public health system, but most studies that have addressed rehabilitation for unilateral spatial neglect (USN) after stroke have been performed in high-income countries. Therefore, the aim of this study was to analyze USN patient recruitment in a multicenter noninvasive brain stimulation clinical trial performed in Brazil and to provide study design recommendations for future studies. We evaluated the reasons for exclusion of patients from a multicenter, randomized, double-blinded clinical trial of rehabilitation of USN patients after stroke. Clinical and demographic variables were compared between the included and excluded patients. A descriptive statistical analysis was performed. Only 173 of the 1953 potential neglect patients (8.8%) passed the initial screening. After screening evaluation, 87/173 patients (50.3%) were excluded for clinical reasons. Cognitive impairment led to the exclusion of 21/87 patients (24.1%). Low socioeconomic status led to the exclusion of 37/173 patients (21.4%). Difficulty obtaining transportation to access treatment was the most common reason for their exclusion (16/37 patients, 43.3%). The analyzed Brazilian institutions have potential for conducting studies of USN. The recruitment of stroke survivors with USN was restricted by the study design and limited financial support. A history of cognitive impairment, intracranial stenting or craniectomy, and lack of transportation were the most common barriers to participating in a multicenter noninvasive brain stimulation trial among patients with USN after stroke.

Effect of Robot-Assisted Training on Unilateral Spatial Neglect After Stroke: Systematic Review and Meta-Analysis of Randomized Controlled Trials.

BACKGROUND: Several studies have shown that robotic devices can effectively improve motor function in stroke patients through limb activation. However, the effects of robot-assisted therapy on perceptual deficits after stroke is unclear. OBJECTIVE: This review aimed to evaluate the effectiveness of robotic limb activation in patients with unilateral spatial neglect (USN) after stroke. METHODS: In this systematic review, a literature search was performed using MEDLINE, EMBASE, CENTRAL, CINAHL, and LILACS databases without language restrictions. Randomized controlled trials (RCTs) and quasi-RCTs of robot-assisted therapy for USN after stroke were selected. Two reviewers independently assessed the risk of bias and certainty of the evidence of the included studies. RESULTS: A total of 630 studies were identified, including five studies for qualitative synthesis and four meta-analyses. The results of RCTs comparing robotic limb activation with a control group suggested an improvement in the degree of USN measured by the line bisection test (standardized mean difference [SMD], -0.64; 95% confidence interval [CI], -1.13 to -0.15; P = .01). There were no differences between the groups in the motor-free visual perception test 3rd edition (SMD, 0.27; 95% CI, -0.25-0.79; P = .31), star cancellation test (SMD, 0.26; 95% CI, -0.42-0.94; P = .54), Albert's test (SMD, -0.67; 95% CI, -2.01-0.66; P = .32), and Catherine Bergego Scale (SMD, -0.81; 95% CI, -2.07-0.45; P = .21). CONCLUSION: The study demonstrated that limb activation through robotic therapy can improve midline perception. However, there was no impact on tasks assessing visual scanning, functionality, or activities of daily living.

Norm scores of cancelation and bisection tests for unilateral spatial neglect: data from a Brazilian population

OBJECTIVE: Unilateral spatial neglect (USN) results in a consistent and exaggerated spatial asymmetry in the processing of information about the body or space due to an acquired brain injury. There are several USN tests for clinical diagnosis, but none of them are validated in Brazil. The aim was to obtain normative values from a healthy sample in Brazil and to evaluate the effects of demographic variables on USN tests. METHODS: This was a cross-sectional study performed with 150 neurologically healthy individuals. USN was evaluated using the line cancelation (LC), star cancelation (SC), and line bisection (LB) tests in the A3 (29.7 x 42.0 cm) sheet format. RESULTS: In LC, 143 participants had 0 omissions, and the occurrence of failure was significantly associated with aging (OR=1.1[1.02-1.2]; p=0.012). In SC, 145 participants had fewer than 1 omission, and the occurrence of failure was significantly associated with aging (OR=1.07[1.03-1.11]; p<0.001). In LB, deviations were the lowest for those with the highest level of education (r=0.20; p=0.015), and the deviation was 9.5 mm. CONCLUSION: The cutoff points presented in this study may be indicative of USN, but due to performance differences based on age, we suggest using different norm scores for different age groups. These norm scores can be used in the clinic immediately for USN diagnosis.

Validation of the Catherine Bergego Scale in patients with unilateral spatial neglect after stroke.

The Catherine Bergego Scale (CBS) is a scale to evaluates the impact of unilateral spatial neglect (USN) on everyday life of patients after stroke. OBJECTIVE: The aim of this study was to evaluate the reliability and comprehension of the Portuguese version of the CBS for patients with USN after stroke. METHODS: This was a cross-sectional study in patients with stroke and USN. The CBS was translated, culturally adapted and applied by two independent investigators. The patients were also evaluated by the Behavioural Inattention Test (BIT), NIHSS, mRS and Barthel scale to assess USN severity, neurological function, disability and autonomy consecutively. Consistency and coherence were analysed using Cronbach's α, inter-observer reliability by Kappa, and the correlation between the CBS, BIT, NIHSS, mRS, and Barthel was determined using Pearson correlation. RESULTS: Twenty-two patients were evaluated and the observed Cronbach's α=0.913. For intra-observer reproducibility, the 10 items showed a reasonable and high reliability between evaluators. The CBS showed a negative correlation with the BIT. There was a low correlation between the BIT and NIHSS, mRS and Barthel index. CONCLUSION: The CBS is an adequate and validated scale for assessing patients with USN after stroke in a Brazilian population.

A Escala de Catherine Bergego (CBS) é uma escala para avaliar o impacto da negligência espacial unilateral (USN) no cotidiano de pacientes após AVC. OBJETIVO: Não há validação da CBS para população brasileira e o objetivo deste estudo foi avaliar a confiabilidade e compreensão da versão em português da CBS para pacientes com USN após AVC. MÉTODOS: Trata-se de um estudo transversal em pacientes com AVC e USN. A CBS foi traduzida, adaptada culturalmente e aplicada por dois investigadores independentes. Os pacientes também foram avaliados pelo Behaviour Innatention Test (BIT), NIHSS, mRS e Barthel para avaliar a gravidade da USN, função neurológica, incapacidade e autonomia consecutivamente. A consistência e a coerência foram analisadas pelo coeficiente α de Cronbach, a confiabilidade interobservador foi avaliada pelo coeficiente kappa e a correlação entre o CBS, BIT, NIHSS, mRS e Barthel foi avaliada pela correlação de Pearson. RESULTADOS: Vinte e dois pacientes foram avaliados e observaram-se consistência e coerência pelo coeficiente α de Cronbach=0,913. Na análise da reprodutibilidade intraobservador, os 10 itens da escala apresentaram confiabilidade razoável e alta entre os avaliadores. O CBS mostrou correlação negativa com o BIT. Houve baixa correlação entre BIT e NIHSS, mRS e índice de Barthel. CONCLUSÃO: A CBS é uma escala adequada e validada para avaliar pacientes com USN após AVC em uma população brasileira e de língua portuguesa.

Validation of the Catherine Bergego Scale in patients with unilateral spatial neglect after stroke / Validação da Escala Catherine Bergego em pacientes com negligência espacial unilateral após acidente vascular cerebral

ABSTRACT: The Catherine Bergego Scale (CBS) is a scale to evaluates the impact of unilateral spatial neglect (USN) on everyday life of patients after stroke. Objective: The aim of this study was to evaluate the reliability and comprehension of the Portuguese version of the CBS for patients with USN after stroke. Methods: This was a cross-sectional study in patients with stroke and USN. The CBS was translated, culturally adapted and applied by two independent investigators. The patients were also evaluated by the Behavioural Inattention Test (BIT), NIHSS, mRS and Barthel scale to assess USN severity, neurological function, disability and autonomy consecutively. Consistency and coherence were analysed using Cronbach's α, inter-observer reliability by Kappa, and the correlation between the CBS, BIT, NIHSS, mRS, and Barthel was determined using Pearson correlation. Results: Twenty-two patients were evaluated and the observed Cronbach's α=0.913. For intra-observer reproducibility, the 10 items showed a reasonable and high reliability between evaluators. The CBS showed a negative correlation with the BIT. There was a low correlation between the BIT and NIHSS, mRS and Barthel index. Conclusion: The CBS is an adequate and validated scale for assessing patients with USN after stroke in a Brazilian population.

RESUMO: A Escala de Catherine Bergego (CBS) é uma escala para avaliar o impacto da negligência espacial unilateral (USN) no cotidiano de pacientes após AVC. Objetivo: Não há validação da CBS para população brasileira e o objetivo deste estudo foi avaliar a confiabilidade e compreensão da versão em português da CBS para pacientes com USN após AVC. Métodos: Trata-se de um estudo transversal em pacientes com AVC e USN. A CBS foi traduzida, adaptada culturalmente e aplicada por dois investigadores independentes. Os pacientes também foram avaliados pelo Behaviour Innatention Test (BIT), NIHSS, mRS e Barthel para avaliar a gravidade da USN, função neurológica, incapacidade e autonomia consecutivamente. A consistência e a coerência foram analisadas pelo coeficiente α de Cronbach, a confiabilidade interobservador foi avaliada pelo coeficiente kappa e a correlação entre o CBS, BIT, NIHSS, mRS e Barthel foi avaliada pela correlação de Pearson. Resultados: Vinte e dois pacientes foram avaliados e observaram-se consistência e coerência pelo coeficiente α de Cronbach=0,913. Na análise da reprodutibilidade intraobservador, os 10 itens da escala apresentaram confiabilidade razoável e alta entre os avaliadores. O CBS mostrou correlação negativa com o BIT. Houve baixa correlação entre BIT e NIHSS, mRS e índice de Barthel. Conclusão: A CBS é uma escala adequada e validada para avaliar pacientes com USN após AVC em uma população brasileira e de língua portuguesa.

Impact of unilateral spatial neglect on chronic patient's post-stroke quality of life.

BACKGROUND: Unilateral spatial neglect (USN) is the prevalent feature in patients with right-sided stroke. It is diagnosed through the behavior inattention test (BIT) and has a negative impact on patients affecting both their functional capacity and quality of life. OBJECTIVE: Here, we aimed to evaluate the impact of USN on the quality of life of patients in the chronic phase of stroke. METHODS: This is a cross-sectional study with stroke patients with USN. After confirming the presence of stroke through neuroimaging examinations and of USN through the BIT, patients' quality of life was evaluated by using the EUROQOL scale. Spearman's correlation was used to validate the correlation between patients' USN and quality of life, with a p < .05 representing significant results. RESULTS: Eighteen individuals were included. When correlating the value of each domain of the EUROQOL scale with the results of the BIT, we observed a negative correlation between mobility (r = -0.97; p = .000), self-care (r = -0.82; p = .013), usual activities (r = -0.87; p = .005); pain or discomfort (r = -0.88; p = .004), anxiety or depression (r = -0.97; p = .000), and EUROQOL total score (r = -0.97, p = .000). CONCLUSION: After a correlation between the overall EUROQOL and BIT scores, we suggest that the higher the USN degree is in stroke patients, the worse their perceived quality of life tends to be.

Crossed Leg Sign Is Associated With Severity of Unilateral Spatial Neglect After Stroke.

BACKGROUND: The crossed leg sign in patients with right hemisphere stroke is thought to be associated with perceptual disorders, such as unilateral spatial neglect (USN). The aim of this study was to compare the crossed leg sign with the severity of USN during the acute phase of stroke. EXPERIMENTAL PROCEDURES: This was an observational and prospective clinical study of individuals with a diagnosis of right parietal stroke, as confirmed by neuroimaging. The occurrence of the crossed leg sign, the time at which this occurred after the stroke, and a clinical diagnosis of USN were measured and recorded. The patients' age, sex, and lesion severity, as determined by the National Institutes of Health Stroke Scale and Glasgow coma scale, were included in the analyses as confounding variables. The outcome of interest was the degree of USN, as measured by the cancellation and bisection tests. Binary logistic regression was used to analyze the effect of crossed leg syndrome on the severity of USN. In the adjusted multiple regression model, a p-value of <0.05 was considered statistically significant. RESULTS: Overall, 60 patients were included in this study. There were no associations between patient demographics and the presence of the crossed leg sign. There was, however, an association between the crossed leg sign and the absolute value of the deviation in the line bisection test (B = -0.234; p = 0.039). The crossed leg sign was not associated with other measures of USN. CONCLUSION: Based on the results of our study, we can conclude that a crossed leg sign in the acute phase of stroke is associated with USN severity, specifically the misinterpretation of the midline.

Unilateral spatial neglect in the acute phase of ischemic stroke can predict long-term disability and functional capacity

OBJECTIVE: The aim of this study was to assess the relationship between the degree of unilateral spatial neglect during the acute phase of stroke and long-term functional independence. METHODS: This was a prospective study of right ischemic stroke patients in which the independent variable was the degree of spatial neglect and the outcome that was measured was functional independence. The potential confounding factors included sex, age, stroke severity, topography of the lesion, risk factors, glycemia and the treatment received. Unilateral spatial neglect was measured using the line cancellation test, the star cancellation test and the line bisection test within 48 hours of the onset of symptoms. Functional independence was measured using the modified Rankin and Barthel scales at 90 days after discharge. The relationship between unilateral spatial neglect and functional independence was analyzed using multiple logistic regression that was corrected for confounding factors. RESULTS: We studied 60 patients with a median age of 68 (34-89) years, 52% of whom were male and 74% of whom were Caucasian. The risk for moderate to severe disability increased with increasing star cancellation test scores (OR=1.14 [1.03-1.26], p=0.01) corrected for the stroke severity, which was a confounding factor that had a statistically positive association with disability (OR=1.63 [1.13-2.65], p=0.01). The best chance of functional independence decreased with increasing star cancellation test scores (OR=0.86 [0.78-0.96], p=0.006) corrected for the stroke severity, which was a confounding factor that had a statistically negative association with independence (OR=0.66 [0.48-0.92], p=0.017). CONCLUSION: The severity of unilateral spatial neglect in acute stroke worsens the degree of long-term disability and functional independence.

Standardization of the face-hand test in a Brazilian multicultural population: prevalence of sensory extinction and implications for neurological diagnosis

OBJECTIVE: The face-hand test is a simple, practical, and rapid test to detect neurological syndromes. However, it has not previously been assessed in a Brazilian sample; therefore, the objective of the present study was to standardize the face-hand test for use in the multi-cultural population of Brazil and identify the sociodemographic factors affecting the results. METHODS: This was a cross sectional study of 150 individuals. The sociodemographic variables that were collected included age, gender, race, body mass index and years of education. Standardization of the face-hand test occurred in 2 rounds of 10 sensory stimuli, with the participant seated to support the trunk and their vision obstructed in a sound-controlled environment. The face-hand test was conducted by applying 2 rounds of 10 sensory stimuli that were applied to the face and hand simultaneously. The associations between the face-hand test and sociodemographic variables were analyzed using Mann-Whitney tests and Spearman correlations. Binomial models were adjusted for the number of face-hand test variations, and ROC curves evaluated sensitivity and specificity of sensory extinction. RESULTS: There was no significant relationship between the sociodemographic variables and the number of stimuli perceived for the face-hand test. There was a high relative frequency of detection, 8 out of 10 stimuli, in this population. Sensory extinction was 25.3%, which increased with increasing age (OR=1.4[1:01–1:07]; p=0.006) and decreased significantly with increasing education (OR=0.82[0.71-0.94]; p=0.005). CONCLUSION: In the Brazilian population, a normal face-hand test score ranges between 8–10 stimuli, and the results indicate that sensory extinction is associated with increased age and lower levels of education.

Treatment of unilateral spatial neglect after stroke using transcranial direct current stimulation (ELETRON trial): study protocol for a randomized controlled trial.

BACKGROUND: Unilateral spatial neglect (USN) is characterized by the inability to report or respond to people or objects that are presented in the spatial hemisphere that is contralateral to the lesioned hemisphere of the brain. USN has been associated with poor functional outcomes and long stays in hospitals and rehabilitation centers. Noninvasive brain stimulation, such as transcranial direct current stimulation (tDCS), has been used in people who have been affected by USN after stroke. The effects of such treatment could provide new insights for health professionals and policy-makers. The aim of this study will be to evaluate the effectiveness and safety of tDCS for USN after stroke. METHODS: A prospective randomized controlled trial with two parallel groups will be conducted, which will aim to recruit 60 patients with USN after ischemic or hemorrhagic stroke. Participants will be randomly placed into the following four treatment groups: (1) anodal tDCS over the right parietal lobe (n = 15), (2) cathodal tDCS over the left parietal lobe (n = 15), (3) a sham group of anodal tDCS over the right parietal lobe (n = 15), and (4) a sham group of cathodal tDCS over the left parietal lobe (n = 15). Blinded assessors will conduct two baseline assessments and one post-intervention assessment. The primary outcome measure will be the level of USN as assessed by the conventional Behavioral Inattention Tasks and the Catherine Bergego Scale. Secondary measures will include neurological capacity (based on the Scandinavian Stroke Scale), functional capacity (based on the Functional Independence Measure and Modified Rankin Scale), autonomy (based on the Barthel Index), and quality of life (based on the EuroQol-5D). Group allocation will be concealed, and all analyses will be based on an intention-to-treat principle. DISCUSSION: This study will explore the effects of more than 15 sessions of tDCS on the level of USN, functional capacity, autonomy, and quality of life in patients with USN after stroke. This proposed study has the potential to identify a new, evidence-based intervention that can enhance perception and independent living in patients with USN after stroke. TRIAL REGISTRATION: REBEC - RBR-78jvzx , registered on 13 March 2016.

Alzheimer's patients do not show left unilateral spatial neglect but exhibit peripheral inattention and simplification.

The Rey-Osterrieth Complex Figure Test (RCFT) is widely used to measure visuoperceptual and visuoconstructional skills, while the Line Bisection (LB) test is commonly employed to assess unilateral spatial neglect (USN). Previous studies have suggested that Alzheimer's disease (AD) patients may suffer from left USN. OBJECTIVES: The purpose of this study was to clarify whether left USN occurs in AD. METHODS: Forty controls, 40 very mild AD patients and 31 mild/moderate AD patients performed both the RCFT copying and the LB test. RESULTS: The very mild AD and mild/moderate AD groups had lower total RCFT copying scores and also scored lower in the "left" and "detail" categories compared to controls. However, there were no correlations between the left-category score for RCFT and the LB score. Instead, peripheral inattention and simplification patterns were noted. CONCLUSIONS: We found that the RCFT copying test is effective for detecting early AD and suggest that AD patients manifest peripheral inattention and simplification but not left USN.

O teste da figura complexa de Rey-Osterrieth (TFCR) é muito utilizado para avaliar habilidades vísuo-espaciais e vísuo-construtivas, enquanto o teste de Bisecção de Linhas (TBL) é usualmente empregado para avaliar a presença de negligência espacial unilateral. Estudos anteriores têm sugerido que pacientes com doença de Alzheimer (DA) podem apresentar negligência espacial unilateral esquerda. OBJETIVOS: O propósito deste estudo foi o de verificar se negligência espacial unilateral esquerda ocorre na DA. MÉTODOS: Quarenta controles, 40 pacientes com DA muito leve e 31 com DA leve/moderada foram avaliados mediante o TFCR e o TBL. RESULTADOS: Os pacientes com DA muito leve e com DA leve/moderado tiveram escores mais baixos na cópia do TFCR e também nas categorias "esquerda" e "detalhe" comparados com controles. Entretanto, não houve correlação entre os escores na categoria-esquerda do TFCR e os escores no TBL. Por outro lado, foram notados padrões de inatenção periférica e simplificação. CONCLUSÕES: Nós observamos que a cópia do TFCR é eficaz para detector DA inicial e sugerimos que pacientes com DA manifestam inatenção periférica e simplificação, mas não negligência espacial unilateral esquerda.