Comparison of Zuspan regimen and its 12-hour modification in women with severe pre-eclampsia and eclampsia in two hospitals in Abeokuta

•A reduction in the maintenance dose of Zuspan Regimen to 12 h does not increase the risk of recurrence of seizures in patients with eclampsia.•A reduction in the maintenance dose of Zuspan Regimen to 12 h does not increase the risk of progression to eclampsia in those with Severe Preeclampsia.•A reduction in the maintenance dose of Zuspan Regimen to 12 h has no adverse effect on the neonatal outcomes in those with antenatal severe Preeclampsia and eclampsia. Hypertensive disorders in pregnancy (HDP) are leading causes of maternal mortality (with severe pre-eclampsia/eclampsia [SPE/EC] being causes of death). Magnesium sulphate (MgSO4) has proven to be the drug of choice for SPE/EC management. However, its availability and cost remain a drawback to its use in developing countries. This study aimed to compare Zuspan regimen with its 12-hour modification for SPE/EC management in two major hospitals in Abeokuta, Ogun state, South Western Nigeria. A randomized controlled trial of non-inferior parallel design carried out at Federal Medical Centre and Sacred Heart Hospital, Abeokuta involving 148 consenting women who were randomized into two groups A and B. Both groups had 4 g loading dose of MgSO4, but the duration of maintenance was reduced to 12-hours in Group A (intervention) while Group B received the standard Zuspan regimen (control). Outcome measures were the occurrence/recurrence of convulsions (primary), maternal side effects and perinatal outcomes (secondary). There was no statistically significant difference in the occurrence/recurrence of seizures between the two groups for both SPE/EC. No signs of maternal toxicity were observed in both arm of the study. There were no statistically significant differences in the perinatal/neonatal death and Apgar scores at 1 and 5 min. However, there was a significant increase in the number of days on admission in the control group of those neonates delivered to mothers with eclampsia. A 12-hr modification of Zuspan regimen was found to be non-inferior to the standard Zuspan regimen in the management of SPE/EC.