Estudo comparativo entre os tratamentos clinico e cirurgico para pacientes com epilepsia do lobo temporal mesial

Orientador: Helder TedeschiDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciências MédicasResumo: A epilepsia é uma doença crônica que acomete 0,5% a 2% da população em geral, sendo considerada a segunda patologia neurológica mais freqüente. A epilepsia de lobo temporal mesial (ELTM) com atrofia hipocampal é a forma mais freqüente das epilepsias parciais refratárias ao tratamento medicamentoso. Nestes pacientes, o tratamento cirúrgico é capaz de proporcionar uma redução da freqüência ou o controle total de crises. Com o objetivo de comparar a eficácia dos tratamentos cirúrgico e clínico realizamos um estudo prospectivo com 26 pacientes com ELTM que foram submetidos a tratamento cirúrgico e 75 pacientes com ELTM submetidos a tratamento medicamentoso entre agosto de 2002 e outubro de 2004 . Todos os pacientes apresentavam critérios de refratariedade, ou seja, controle inadequado de crises parciais com uso em doses máximas toleradas de pelo menos duas drogas antiepilépticas, durante pelo menos um ano. Utilizamos a análise de curva de sobrevivência de Kaplan-Meier em função do tempo de recorrência das crises para obter o intervalo de confiança dos pacientes sem crises e o teste log-rank para comparação do estado de controle de crises entre os grupos. A proporção acumulada dos pacientes sem crise (classe IA de Engel) foi maior no grupo submetido ao tratamento cirúrgico (73.1%) comparando-se com o grupo clínico (12%) (p<0.0001). No grupo cirúrgico, 2 de 26 pacientes (7.7%) apresentaram alterações neurológicas transitórias e 2 dos 26 (7.7%), alterações neurológicas permanentes relacionados ao procedimento cirúrgico. No grupo clínico, sete pacientes (9.3%) apresentaram eventos adversos graves durante o seguimento, tais como queimaduras e estado de mal epiléptico. O tratamento cirúrgico para ELTM refratária ao tratamento clínico prévio com duas DAEs foi mais eficiente que o tratamento clínico, incluindo novas tentativas de mono ou politerapiaAbstract: Epilepsy is a chronic disease that affects 0.5% to 2% of the general population, and is considered the second most frequent neurological condition in outpatient clinics. Mesial temporal lobe epilepsy (MTLE) associated to hippocampal sclerosis is the most frequent type of partial epilepsy in adult. A significant proportion of these patients do not respond to antiepileptic drugs (AEDs). For patients with MTLE and refractory seizures, surgery is considered an efficient treatment option. We prospectively studied 26 patients with MTLE who underwent surgical treatment and 75 patients with MTLE who underwent medical treatment between August 2002 and October 2004. All patients failed to achieve seizure control with at least two first line AED for partial seizures before entering the study. We used Kaplan-Meier survival analysis as a function of time of seizure recurrence to obtain estimates of 95% confident interval of seizure freedom and log-rank test to compare the status of seizure control between the two groups. The cumulative proportion of patients free of all seizures (Engel¿s class IA) was higher in the surgical group (73.1%) compared to the clinical group (12%) (p<0.0001). In the surgical group, 2 of 26 patients (7.7%) had transient adverse effects and 2 of 26 patients (7.7%) had a permanent deficit related to the surgical procedure. In the clinical group 7 patients had (9.3%) major adverse events during follow-up, including burns and status epilepticus. Surgical treatment for patients with MTLE who failed to achieve seizure control with two previous AED regimens was more efficient than medical treatment with further trials of AEDMestradoNeurologiaMestre em Ciências Médica

[chronic Subdural Hematoma: Study Of 161 Patients And The Relationship With Coagulation Abnormalities].

The chronic subdural hematoma represents one of the most frequent types of intracranial hemorrhage. One hundred sixty one patients operated in the Clinical Hospital of State University of Campinas-SP (UNICAMP) from April 1994 to May 2000, were analyzed retrospectively in order to characterize the population and to study the importance of the pre-operative coagulation analysis in the outcome. The majority of the population was male (86%), white (85.1%) and in the fifth decade (median age: 57 years). A high mortality index in the postoperative period was found in patients with INR (international normalized ratio) values greater than 1.25 and/or thrombocytopenia (p<0.001 and p=0.004 respectively). Patients with previous head injury history (76%) showed a lower mortality (p=0.044). The results stand out the importance of the pre-operative evaluation with coagulation studies in order to correct possible abnormalities.611011-

Artifacts in brain magnetic resonance imaging due to metallic dental objects

Objective: Artifacts caused by metallic objects, such as dental crowns, dental implants and metallic orthodontic appliances, are a common problem in head and neck MRI. The aim of this retrospective study was to identify the main metal dental objects that produce artifacts on brain MRIs.Study design: Imaged metallic artifacts and their sources were identifi ed. Artifact image plane was rated on a score of 0 or 1 (0 - distinguishable for diagnosis and 1 - not distinguishable for diagnosis).Results: Seventy-eight percent of the artifacts appearing in images were caused by orthodontic appliances, followed by dental titanium implants (18%) and metallic crowns (4%). Orthodontic appliances obtained the highest scores in all planes.Conclusions: We concluded that is diffi cult to avoid the effect of metallic artifacts in the maxillofacial regions on brain scan. Removing metallic parts of the orthodontic appliance should ensure diagnostically useful quality scans

Chronic subdural hematoma: study of 161 patients and the relationship with coagulation abnormalities

The chronic subdural hematoma represents one of the most frequent types of intracranial hemorrhage. One hundred sixty one patients operated in the Clinical Hospital of State University of Campinas - SP (UNICAMP) from April 1994 to May 2000, were analyzed retrospectively in order to characterize the population and to study the importance of the pre-operative coagulation analysis in the outcome. The majority of the population was male (86%), white (85.1%) and in the fifth decade (median age: 57 years). A high mortality index in the postoperative period was found in patients with INR (international normalized ratio) values greater than 1.25 and/or thrombocytopenia (p<0.001 and p=0.004 respectively). Patients with previous head injury history (76%) showed a lower mortality (p=0.044). The results stand out the importance of the pre-operative evaluation with coagulation studies in order to correct possible abnormalities.O objetivo deste estudo é analisar a evolução de pacientes com hematoma subdural crônico em relação aos achados do coagulograma. Foram analisados 161 pacientes operados no Hospital das Clínicas-UNICAMP entre abril de 1994 e 2000. Foi detectado um predomínio do sexo masculino (86,3%), da cor branca (85,1%) e da faixa etária na quinta década (mediana 57 anos). O estudo mostrou mortalidade maior no período pós-operatório entre os pacientes com valores de RNI (international normalized ratio) superiores a 1,25 e/ou trombocitopenia (p<0,001 e p=0,004, respectivamente) e mortalidade menor para os pacientes com antecedente de traumatismo cranioencefálico (76%) (p=0,044). Os resultados ressaltam a importância da avaliação pré-operatória com o coagulograma a fim de se corrigir possíveis alterações.1011101

Padrões de controle de crises em pacientes com epilepsia de lobo temporal com ou sem esclerose hipocampal

Objective Patients with mesial temporal lobe epilepsy (MTLE) may present unstable pattern of seizures. We aimed to evaluate the occurrence of relapse-remitting seizures in MTLE with (MTLE-HS) and without (MTLE-NL) hippocampal sclerosis. Method We evaluated 172 patients with MTLE-HS (122) or MTLE-NL (50). Relapse-remitting pattern was defined as periods longer than two years of seizure-freedom intercalated with seizure recurrence. Infrequent seizures was considered as up to three seizures per year and frequent seizures as any period of seizures higher than that. Results Thirty-seven (30%) MTLE-HS and 18 (36%) MTLE-NL patients had relapse-remitting pattern (X2, p = 0.470). This was more common in those with infrequent seizures (X2, p < 0.001). Twelve MTLE-HS and one MTLE-NL patients had prolonged seizure remission between the first and second decade of life (X2, p = 0.06). Conclusion Similar proportion of MTLE-HS or MTLE-NL patients present relapse-remitting seizures and this occurs more often in those with infrequent seizures.Patients with mesial temporal lobe epilepsy (MTLE) may present unstable pattern of seizures. We aimed to evaluate the occurrence of relapse-remitting seizures in MTLE with (MTLE-HS) and without (MTLE-NL) hippocampal sclerosis. Method: We evaluated 172 pat7327982FAPESP - FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULOCNPQ - CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO2005/56578-4; 2009/54552-9SEM INFORMAÇÃOPacientes com epilepsia do lobo temporal mesial (ELTM) podem apresentar padrão instável de crises epilépticas. Nosso objetivo foi avaliar ocorrência de crises remitente-recorrentes em ELTM com (ELTM-EH) e sem (ELTM-NL) esclerose hipocampal. Método: Ava

Evolução da epilepsia de lobo temporal mesial familiar

OBJECTIVE: To analyze seizure outcome in individuals with familial mesial temporal lobe epilepsy (FMTLE). METHOD: We followed prospectively 64 individuals with FMTLE and 37 asymptomatic individuals belonging to 28 families. RESULTS: Patients with FMTLE had a mean follow up was 93.4 ± 15.8 months. At baseline they were divided in benign (n = 29), remission (n = 28) and refractory (n = 7). At last follow up visit 41.4% patients with benign FMTLE remained classified as benign, 20.7% became refractory and 37.9% were in remission. In the subgroup of FMTLE in remission 21 75% remained without seizures; 21.4% were classified as benign FMTLE, and one died (3.6%) from cause unrelated to epilepsy. All refractory patients remained refractory. From the asymptomatic group, 10.8% became symptomatic (FMTLE). The mean follow up was 76.0 ± 21.2 months. CONCLUSION: Prospective follow up of more than 7 years in patients with FMTLE revealed that it is unlikely to achieve seizure control in those with refractory seizures. Patients with diagnose of more benign forms of FMTLE for more than one year are likely to either remit or remain under well controlled seizures. The majority of patients who had achieved seizure remission remained seizure-free and none became refractory. Asymptomatic individuals had a greater probability to have seizures compared to the general population in a 6 year period of follow up.OBJETIVOS: Analisar a evolução de famílias com epilepsia de lobo temporal mesial familiar (ELTMF). METODOLOGIA: Seguimento prospectivo de 64 pacientes com ELTMF e 37 membros assintomáticos pertencente a 28 famílias. RESULTADOS: A média de seguimento dos pacientes com ELTMF foi de 93,4 ± 15,8 meses. Na avaliação inicial os pacientes foram divididos em benignos (n = 29), remissão (n = 28) e refratários (n = 7). Na última visita disponível, 41,4% dos pacientes com ELTMF benigna permaneceram classificados como benignos, 20,7% tornaram-se refratários e 37,9% entraram em remissão. No grupo em remissão, 75% permaneceram livres de crise, 21,4% foram classificados como benignos e um faleceu (3,6%) de causa não relacionada à epilepsia. Todos pacientes refratários permaneceram refratários. Em relação aos assintomáticos 10,8% evoluíram com crises. A média de seguimento dos assintomáticos foi de 76,0 ± 21,2 meses. CONCLUSÃO: O seguimento prospectivo de mais de 7 anos de pacientes com ELTMF revelou que é improvável ocorrer controle de crises no grupo refratário. No grupo benigno é muito provável que estes indivíduos entrem em remissão ou permaneçam com evolução benigna. A maioria dos pacientes do grupo em remissão permaneceu em remissão e nenhum se tornou refratário. Em relação aos assintomáticos a probabilidade de apresentar uma crise no decorrer de aproximadamente 6 anos foi maior que o observado na população geral.111113Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP