What medication may be prescribed for a 30-week-pregnant woman suspected of having preterm labor?

Magnesium sulfate is often prescribed for a pregnant woman suspected of having preterm labor because it serves as a tocolytic, a class of medications used to delay labor. Magnesium sulfate acts by inhibiting uterine contractions, thus helping to prolong pregnancy in cases of preterm labor. Its effectiveness in reducing the risk of neurological complications in preterm infants is also a significant benefit, as it can help protect the developing fetus from issues associated with premature birth.

Additionally, magnesium sulfate can provide neuroprotection for the fetus if delivery does occur before 32 weeks of gestation. This protective effect is important in preterm labor management, making magnesium sulfate a preferred option for this clinical scenario. The options pertaining to indomethacin or calcium channel blockers might also have roles in certain cases, but magnesium sulfate is particularly recognized for its dual benefits in managing labor and protecting fetal outcomes.

Aspirin's primary uses do not include tocolysis; it is mainly indicated for cardiovascular issues and is not effective for managing preterm contractions. Thus, the choice of magnesium sulfate is crucial for both its immediate effect on labor and the long-term benefits for fetal health in a preterm labor situation.