The nurse is explaining the difference between active and passive immunity to the student nurse. Which statement accurately describes a characteristic of the process of immunity?

A. Increase the progress of labor: Magnesium sulfate does not stimulate uterine contractions or accelerate labor. Its pharmacologic action primarily affects neuromuscular excitability rather than uterine contractility.

B. Decrease blood pressure: While magnesium sulfate may have a mild vasodilatory effect, it is not used as a primary antihypertensive in preeclampsia. Blood pressure management typically involves medications such as labetalol, hydralazine, or nifedipine.

C. Prevent seizures: Magnesium sulfate acts as a central nervous system depressant and blocks neuromuscular transmission, reducing the risk of eclampsia by preventing seizure activity in clients with severe preeclampsia. It is the drug of choice for seizure prophylaxis during pregnancy.

D. Prevent contractions: Although magnesium sulfate has some tocolytic properties at high doses, its standard use in preeclampsia is for seizure prevention rather than inhibition of labor, and it is not the first-line agent for stopping preterm contractions.

A. Jaundice: Jaundice in neonates is typically related to elevated bilirubin levels and liver immaturity rather than low blood glucose levels. Monitoring for jaundice would not address immediate hypoglycemic symptoms.

B. Erythema toxicum: This is a common, benign rash seen in healthy newborns and is unrelated to blood glucose abnormalities or hypoglycemia.

C. Jitters, tremors: Neurologic manifestations such as jitters, tremors, irritability, and poor feeding are classic signs of neonatal hypoglycemia and indicate the need for prompt intervention.

D. Subconjunctival hemorrhage: This occurs from birth trauma, particularly vaginal delivery, and is not associated with low blood glucose or metabolic disturbances in the neonate.