True or False: Administration of magnesium sulfate in women with preterm labor leads to inhibition of uterine contractions.

• A. True
• B. False
• C. Only during active labor
• D. Only in high-risk pregnancies

Answer: (A)

The statement is true; the administration of magnesium sulfate in women with preterm labor indeed leads to the inhibition of uterine contractions. Magnesium sulfate acts as a tocolytic agent, which means it helps to relax the smooth muscles of the uterus. This relaxation reduces the frequency and intensity of uterine contractions, thereby helping to delay preterm labor and maintain the pregnancy for a longer period, which can be crucial for fetal development.

This tocolytic effect is particularly beneficial in cases of preterm labor, as it can provide additional time for other interventions, such as corticosteroids for fetal lung maturity. The use of magnesium sulfate is supported by its effectiveness and safety profile in managing preterm labor, making it a standard option in clinical practice.

While there are considerations regarding specific patient circumstances and potential adverse effects, these factors do not negate the primary action of magnesium sulfate in inhibiting contractions during preterm labor. Other options proposed do not accurately reflect the primary action of magnesium sulfate in the context of preterm labor management.