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Master's Dissertation
DOI
10.11606/D.17.2017.tde-06012017-100818
Document
Author
Full name
Pablo Vinícius Silveira Feitoza
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
Ribeirão Preto, 2016
Supervisor
Committee
Santos, Antonio Carlos dos (President)
Becker, Jefferson
Bichuetti, Denis Bernardi
Title in Portuguese
Estudo comparativo do acometimento medular entre a mielite transversa aguda idiopática e a neuromielite óptica
Keywords in Portuguese
Acometimento medular
Mielite transversa aguda idiopática
Neuromielite óptica
Abstract in Portuguese
Introdução: A mielite transversa aguda é uma lesão inflamatória da medula espinhal, expressa por acometimento dos sistemas sensitivo, motor e autonômico. Entidade nosológica que pode representar um episódio de doença desmielinizante primária do sistema nervoso central e determina grande grau de incapacidade funcional. Objetivo: Caracterizar os aspectos clínicos, laboratoriais e de imagem que permitam distinguir o padrão de acometimento medular da mielite transversa aguda idiopática (MTAi) e a neuromielite óptica (NMO). Casuística e métodos: Estudo de casos e controles, retrospectivo, comparativo entre indivíduos com critérios diagnósticos para MTAi e NMO. Admitindo-se como dados estatisticamente significantes p < 0,05. Resultados: Foram incluídos 33 pacientes divididos em dois grupos, sendo 16 pacientes com o diagnóstico de MTAi e 17 pacientes com NMO. A evolução ao nadir deficitário foi de 6,25 ± 3,87 e 10 ± 4,04 dias nos grupos MTAi e NMO, respectivamente. As escalas de funcionalidade Rankin modificada e EDSS modificada aplicadas à admissão e à alta diferiram entre os grupos denotando maior comprometimento pela MTAi (p=0,001). O número de pacientes com EDSS à alta <= 3 foi 10,06 + 4,15 e > 3 foi 6,41 + 3,82 (p=0,014). Houve maior comprometimento axial > 50% da medula na MTAi (p=0,001). A mielite recorreu em 79% dos casos de NMO, enquanto em apenas 25% da MTAi. O anticorpo antiaquaporina 4 (82,35%) e a neurite óptica (88,2%) apresentaram maior associação à NMO. Conclusão: A MTAi apresenta uma evolução mais precoce ao nadir deficitário clínico, maior comprometimento concomitante dos sistemas sensitivo, motor e esfincteriano, maior grau de incapacidade funcional, mais frequentemente curso monofásico, maior comprometimento axial medular e mais dor lombar comparativamente à NMO. Enquanto a NMO apresentou mais frequentemente mielite recorrente, maior positividade para anticorpo antiaquaporina 4 e episódios de neurite óptica.
Title in English
Comparative study of spinal cord involvement between idiopathic acute transverse myelitis and neuromyelitis optica
Keywords in English
Idiopathic acute transverse myelitis
Optic neuromyelitis
Spinal cord injury
Abstract in English
Introduction: Acute transverse myelitis is an inflammatory injury of the spinal cord, expressed by involvement of sensory, motor and autonomic systems. This nosological entity may represent an episode of primary demyelinating disease of the central nervous system and result in high degree of disability. Objective: To characterize the clinical, laboratory and imaging that can distinguish the pattern of spinal cord involvement of idiopathic acute transverse myelitis (iATM) and neuromyelitis optica (NMO). Methods: Retrospective, cases and controls study, comparison between individuals with diagnostic criteria for iATM and NMO. Admitting statistically significant data p <0.05. Results: 33 patients were included divided into two groups, 16 patients diagnosed with MTAi and 17 patients with NMO. The evolution to deficit nadir was 6.25 ± 3.87 and 10 ± 4.04 days in iATM and NMO groups, respectively. The admission and outcome Rankin functionality scales modified and modified EDSS differed between the groups showing greater commitment by iATM (p = 0.001). The number of patients with outcome EDSS <= 3 was 10.06 + 4.15 and > 3 was 6,41 + 3,82 (p=0,014). There was a greater axial involvement > 50% of the spinal cord in iATM (p = 0.001). The myelitis recurred in 79% of cases of NMO, whereas in only 25% of iATM. The antiaquaporina antibody 4 (82.35%) and optic neuritis (88.2%) showed greater association with NMO. Conclusion: iATM presents an early clinical evolution to deficit nadir, higher concomitant compromise of sensitive, motor and sphincter systems, higher degree of disability, most often monophasic course, most spinal axial involvement and more back pain compared to NMO. Meanwhile, NMO presented more often recurrent myelitis, higher positivity for antiaquaporina antibody 4 and episodes of optic neuritis.
 
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Publishing Date
2017-03-31
 
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