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Revista Brasileira de Ginecologia e Obstetrícia

Print version ISSN 0100-7203On-line version ISSN 1806-9339

Abstract

AMORIM, Melania Maria Ramos de et al. Recurrence of Seizures after Anticonvulsant Therapy with Magnesium Sulfate in Patients with Eclampsia. Rev. Bras. Ginecol. Obstet. [online]. 2000, vol.22, n.3, pp.159-165. ISSN 1806-9339.  https://doi.org/10.1590/S0100-72032000000300007.

Purpose: to determine the frequency of recurrence of seizures after anticonvulsant therapy with magnesium sulfate and to evaluate treatment and maternal prognosis. Patients and Methods: a prospective cohort study was conducted, enrolling all cases of eclampsia managed at IMIP between January/1995 and June/1998. Magnesium sulfate and oxygen therapy were administered routinely and interruption of pregnancy was performed after maternal stabilization. The frequency of recurrence of seizures and its association with maternal complications were determined. c2 test for association was used at a 5% level of significance. Results: twelve cases presented recurrence of convulsions after magnesium sulfate (10%) and all received a repeated dose. In four of them convulsions persisted and they received intravenous diazepam. After diazepam, one patient still had seizures, with unsuccessful administration of phenytoin and therefore barbituric coma was induced (thionembutal). This patient had a CT-scan with evidence of intracerebral hemorrhage. Maternal complications were significantly more frequent in the group with recurrence: coma (16.7% versus 0.95), acidosis (50% versus 2.9%), pulmonary edema (16.7% versus 2.9%), cerebral hemorrhage (16.7% versus 0%) and acute renal failure (16.7% versus 1.9%). Three cases of maternal death occurred in patients with recurrence (25%) versus 2 cases in patients without recurrence (1.9%). Conclusions: rate of recurrence after anticonvulsant therapy with magnesium sulfate is low (10%) but it is associated with increased maternal morbidity and mortality. These cases must be managed in an intensive care unit and submitted to routine CT-scan because cerebral hemorrhage can be the cause of recurrence.

Keywords : Eclampsia; Magnesium sulfate; Eclampsia: seizure recurrence; Maternal death.

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