RESUMEN
Introduction: Traumatic brain injury (TBI) is an important public health concern and that may lead to severe neural sequels, such as color vision deficits. Methods: We evaluated the color vision of 10 TBI patients with normal cognitive function using a color discrimination test in a fixed saturation level. We also analyzed computerized tomography scans to identify the local of the brain damages. Results: Four TBI patients that had lesions in brain areas of the ventral visual streams, five TBI patients had lesions inferred in brain areas of the dorsal visual stream, and one TBI patient had lesion in the occipital area. All the patients had cognitive and color vision screened and they had characterized the chromatic discrimination at high and low saturation. All participants had no significant cognitive impairment in the moment of the color vision test. Additionally, they had perfect performance for discrimination of chromatic stimulus at high saturation and similar to controls (n = 37 age-matched participants). Three of four TBI patients with lesions in the ventral brain and one patient with lesion in the occipital area had impairment of the chromatic discrimination at low saturation. All TBI patients with lesions in the dorsal brain had performance similar or slightly worse than the controls. Conclusion: Chromatic discrimination at low saturation was associated to visual damage in the ventral region of the brain and is a potential tool for functional evaluation of brain damage in TBI patients.
RESUMEN
Objetivou-se estimar a incidência global e em casos índices de hanseníase e traçar o perfil sócio demográfico em menores de 15 anos no município de Imperatriz, Maranhão. Realizou-se um estudo longitudinal retrospectivo dos casos de hanseníase no município, utilizando-se dados obtidos das notificações do agravo junto ao SINAN NET. A população do estudo compreendeu 284 casos novos notificados no período entre 2004 e 2010. A análise dos dados utilizou os testes Qui-quadrado de Pearson ou o Exato de Fischer. Evidenciou-se elevados coeficientes de detecção no ano de 2005 (83,38/ 100.000 hab.), incapacidade física no diagnóstico em 2004 (39,62%.) e de contatos examinados (24,44%). Houve predomínio de casos no sexo masculino (51,06%), cor parda (55,65%), faixa etária de 1014 anos (60,22%) e com escolaridade média de 611 anos (59,8%). A maioria das formas clínicas notificadas foi do tipo indeterminada (40,13 %), tendo como predominante o grau de incapacidade física II (21,1 %). Não foram estatisticamente significantes as diferenças proporcionais entre as formas clínicas (p-valor=0,056); ao passo que a escolaridade apresentou associação significativa (p<0,0001) com a ocorrência da doença entre menores de 15 anos de idade. Conclui-se que a hanseníase continua uma doença de fácil disseminação, considerando a frequência de casos novos.
The purpose of this study was to estimate the global incidence and cases indexes of leprosy and to design the socio-demographic profile in children under 15 years of age in the municipality of Imperatriz, in the state of Maranhão, Brazil. A longitudinal retrospective study of leprosy cases in the municipality was performed, using information generated by the disease reports in SINAN NET. Data collection included 284 patients reported from 2004 to 2010, classified as new cases. Data analysis used Pearson's Chi-square test or Fisher's exact test. There were high detection coefficients in 2005 (83.38/100.000 inhabitants), physical incapacity in the diagnosis in 2004 (39.62%) and in examined contacts (24.44%). There was a predominance of male (51.06%), brown color (55.65%), aged between 10-14 years (60.22%), and average schooling of 6-11 years (59.8%). Most of the clinical forms reported were of the indeterminate type (40.13%), with predominance of physical incapacity degree II (21.1%). The proportional differences between the clinical forms (p-value = 0.056) were not statistically significant, while schooling presented a significant association (p <0.0001) with the occurrence of the disease among children under 15 years of age. It can be concluded that leprosy remains a disease with easy spread when considering the rate of new cases.
