Dhirapatara Charoenvidhya1, Saknan Manotaya. 1. Department of Obstetrics and Gynaecology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand. drearth@hotmail.com
Abstract
OBJECTIVE: To compare the percentages of pregnant women with preeclampsia who reached the therapeutic serum magnesium levels between those who receivedmaintenance magnesium sulfate infusion of 2 g/hour versus I g/hour MATERIAL AND METHOD: Sixty women diagnosed of preeclampsia and magnesium sulfate that were considered for seizure prophylaxis were randomized into two groups. A loading dose of 5 g magnesium sulfate was given intravenously over 20 minutes to both groups. Maintenance doses of magnesium sulfate of 2 g/hour and 1 g/hour were given to the study and control groups, respectively. The maintenance dose was continued until 24 hours postpartum. Blood samples for serum magnesium were collected at 0, 1/2, 2, and 4 hours after the loading dose and at 2 and 12 hours after delivery. Clinical signs of magnesium toxicity were carefully monitored. Maternal and neonatal outcome were evaluated. RESULTS: Significantly more women in the present study group reached the therapeutic level of serum magnesium at 2 hours (70% vs. 23%, p = 0.001) and at 4 hours (80% vs. 17%, p = 0.00) after the loading dose and at 2 hours (60% vs. 20%, p = 0.003) and at 12 hours (80% vs. 37%, p = 0.001) after delivery. No clinical magnesium toxicity was observed There were no significant differences in maternal and neonatal outcomes between the two groups. CONCLUSION: The maintenance dose of magnesium sulfate at 2 g/hour was more likely to attain the therapeutic level of serum magnesium when compared to 1 g/hour with no detectable difference in maternal and neonatal outcomes.
RCT Entities:
OBJECTIVE: To compare the percentages of pregnant women with preeclampsia who reached the therapeutic serum magnesium levels between those who received maintenance magnesium sulfate infusion of 2 g/hour versus I g/hour MATERIAL AND METHOD: Sixty women diagnosed of preeclampsia and magnesium sulfate that were considered for seizure prophylaxis were randomized into two groups. A loading dose of 5 g magnesium sulfate was given intravenously over 20 minutes to both groups. Maintenance doses of magnesium sulfate of 2 g/hour and 1 g/hour were given to the study and control groups, respectively. The maintenance dose was continued until 24 hours postpartum. Blood samples for serum magnesium were collected at 0, 1/2, 2, and 4 hours after the loading dose and at 2 and 12 hours after delivery. Clinical signs of magnesiumtoxicity were carefully monitored. Maternal and neonatal outcome were evaluated. RESULTS: Significantly more women in the present study group reached the therapeutic level of serum magnesium at 2 hours (70% vs. 23%, p = 0.001) and at 4 hours (80% vs. 17%, p = 0.00) after the loading dose and at 2 hours (60% vs. 20%, p = 0.003) and at 12 hours (80% vs. 37%, p = 0.001) after delivery. No clinical magnesiumtoxicity was observed There were no significant differences in maternal and neonatal outcomes between the two groups. CONCLUSION: The maintenance dose of magnesium sulfate at 2 g/hour was more likely to attain the therapeutic level of serum magnesium when compared to 1 g/hour with no detectable difference in maternal and neonatal outcomes.
Authors: Ana C F Pascoal; Leila Katz; Marcela H Pinto; Carina A Santos; Luana C O Braga; Sabina B Maia; Melania M R Amorim Journal: Medicine (Baltimore) Date: 2019-08 Impact factor: 1.817
Authors: B O Okusanya; O T Oladapo; Q Long; P Lumbiganon; G Carroli; Z Qureshi; L Duley; J P Souza; A M Gülmezoglu Journal: BJOG Date: 2015-11-24 Impact factor: 6.531