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Premenstrual seizure increase influence of age, duration of disease, seizure frequency, previous complaint of perimenstrual accentuation, eeg and ct scan findings

Aumento pré-menstrual de crises epilépticas: importância da idade, duração da doença, frequência das crises, queixa prévia de piora perimenstrual das crises, resultado do CT e do EEG

Abstracts

We selected prospectively 80 mentally healthy women at menacme age, with chronic epilepsy and at least one seizure in the month preceding this study. They underwent four EEGs weekly. CT scan of the skull was done in 57 patients (71.25%). Seven patients were excluded because they had no seizures or menses. We registered 5630 seizures during 579 regular menstrual cycles over a 30 month period. RESULTS: - there was a higher incidence of seizures in the premenstrual period (p<0.001); - age did not influence the distribution of seizures during the menstrual cycle in the group studied; - patients with 11 or more years of disease showed more accentuation of premenstrual seizures than patients with 10 or less years of disease; - there was no relation between the patients frequency of seizures and the occurrence of premenstrual seizures; - the patients impression of the incidence of seizures not related to menstruation was not confirmed; - patients with abnormal skull CT scans had more accentuation of premenstrual seizures than patients with normal exams; - patients with abnormal EEGs had more premenstrual seizures than patients with normal exams. Our findings suggest that the female sexual hormones alter cerebral excitability when there is an underlying structural pathology shown by CT scan or an electrical cerebral dysfunction revealed by EEG.


Selecionamos prospectivamente 80 mulheres epilépticas, sem aparente distúrbio comportamental ou retardo mental, na menacme, com crises epilépticas não completamente controladas. Foram submetidas a 4 EEGs com intervalos semanais. CT-scan de crânio foi realizado em 57 pacientes (71,25%). Sete pacientes foram excluídas por não apresentarem crises ou menstruações, ou por colaboração insatisfatória. Foram registradas 5630 crises epilépticas em 579 ciclos menstruais regulares durante 30 meses. RESULTADOS: - houve maior incidência de crises epilépticas no período peri-menstrual: - a idade não influenciou na distribuição de crises durante o ciclo menstrual no grupo estudado; - pacientes com 11 ou mais anos de doença mostraram maior tendência a crises no período pré-menstrual que pacientes com 10 ou menos anos de_ doença; - não houve relação entre a freqüência das crises e a ocorrência de crises pré-menstruais; - a negativa da referência prévia de piora peri-menstrual pela paciente não mostrou ser dado relevante; - pacientes cujos CT scan foram anormais tiveram tendência a ter crises no período pré-menstrual; - pacientes com EEGs anormais tiveram mais crises no período pré-menstrual quando comparadas às pacientes com EEGs normais. Nossos achados sugerem que os hormônios sexuais femininos modifiquem a excitabilidade cortical, particularmente quando há prévio comprometimento estrutural evidenciado pelo CT-scan ou disfunção elétrica cerebral, pelo EEG.


CONTENTS CONTEÚDO

Carlos A. M. Gueirreiro; Marcelo C. Ramos

Department of Neurology, Campinas University (UNICAMP). Paper presented in part at the 18th International Epilepsy Congress (New Delhi, October 1989).

SUMMARY

We selected prospectively 80 mentally healthy women at menacme age, with chronic epilepsy and at least one seizure in the month preceding this study. They underwent four EEGs weekly. CT scan of the skull was done in 57 patients (71.25%). Seven patients were excluded because they had no seizures or menses. We registered 5630 seizures during 579 regular menstrual cycles over a 30 month period.

RESULTS: - there was a higher incidence of seizures in the premenstrual period (p<0.001); - age did not influence the distribution of seizures during the menstrual cycle in the group studied; - patients with 11 or more years of disease showed more accentuation of premenstrual seizures than patients with 10 or less years of disease; - there was no relation between the patients frequency of seizures and the occurrence of premenstrual seizures; - the patients impression of the incidence of seizures not related to menstruation was not confirmed; - patients with abnormal skull CT scans had more accentuation of premenstrual seizures than patients with normal exams; - patients with abnormal EEGs had more premenstrual seizures than patients with normal exams. Our findings suggest that the female sexual hormones alter cerebral excitability when there is an underlying structural pathology shown by CT scan or an electrical cerebral dysfunction revealed by EEG.

RESUMO

Selecionamos prospectivamente 80 mulheres epilépticas, sem aparente distúrbio comportamental ou retardo mental, na menacme, com crises epilépticas não completamente controladas. Foram submetidas a 4 EEGs com intervalos semanais. CT-scan de crânio foi realizado em 57 pacientes (71,25%). Sete pacientes foram excluídas por não apresentarem crises ou menstruações, ou por colaboração insatisfatória. Foram registradas 5630 crises epilépticas em 579 ciclos menstruais regulares durante 30 meses.

RESULTADOS: - houve maior incidência de crises epilépticas no período peri-menstrual: - a idade não influenciou na distribuição de crises durante o ciclo menstrual no grupo estudado; - pacientes com 11 ou mais anos de doença mostraram maior tendência a crises no período pré-menstrual que pacientes com 10 ou menos anos de_ doença; - não houve relação entre a freqüência das crises e a ocorrência de crises pré-menstruais; - a negativa da referência prévia de piora peri-menstrual pela paciente não mostrou ser dado relevante; - pacientes cujos CT scan foram anormais tiveram tendência a ter crises no período pré-menstrual; - pacientes com EEGs anormais tiveram mais crises no período pré-menstrual quando comparadas às pacientes com EEGs normais. Nossos achados sugerem que os hormônios sexuais femininos modifiquem a excitabilidade cortical, particularmente quando há prévio comprometimento estrutural evidenciado pelo CT-scan ou disfunção elétrica cerebral, pelo EEG.

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Dr. Carlos A. M. Guerreiro - Departamento de Neurologia, UNICAMP - Caixa Postal 6111 -13081 Campinas SP - Brasil.

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  • Premenstrual seizure increase influence of age, duration of disease, seizure frequency, previous complaint of perimenstrual accentuation, eeg and ct scan findings

    Aumento pré-menstrual de crises epilépticas: importância da idade, duração da doença, frequência das crises, queixa prévia de piora perimenstrual das crises, resultado do CT e do EEG.
  • Publication Dates

    • Publication in this collection
      22 Feb 2011
    • Date of issue
      Mar 1991
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