Answer:
A naturally occurring mineral magnesium sulfate is used to monitor the blood levels of magnesium. The injection of magnesium sulfate is also used in cases of pediatric acute nephritis, and to inhibit seizures in extreme pre-eclampsia, toxemia of pregnancy, or eclampsia.
In the given case, magnesium sulfate would have been ordered in the context of suitable clinical obstetric practice comprising in specific, treatment and prevention of seizures in women with eclampsia or preeclampsia, and fetal neuroprotection prior of predicting early preterm delivery, that is, less than 32 weeks of gestation.