Monitor the FHR continuously.Magnesium sulfate, which is used to prevent seizures in clients who have preeclampsia, is a high-alert medication that requires close monitoring. The FHR and uterine contractions should be monitored continuously while the client is receiving magnesium sulfate.The nurse should monitor the client's vital signs, including blood pressure, every 15 to 30 min. Magnesium sulfate, which is used to prevent seizures in clients who have preeclampsia, is a high-alert medication that requires close monitoring.The nurse should restrict the client's total hourly intake to no more than 125 mL. Clients who have preeclampsia can have an alteration in kidney function, leading to increases in edema.The nurse should administer calcium gluconate if the client shows manifestations of magnesium sulfate toxicity. Findings of toxicity include loss of deep-tendon reflexes, respiratory depression, slurred speech, and cardiac arrest.