A nurse is caring for a client who is at 35 weeks of gestation and has pre-term labor with intact membranes and no signs of infection.

The provider prescribes indomethacin to inhibit prostaglandin synthesis and suppress uterine contractions.

Which of the following laboratory tests should the nurse monitor while the client is receiving this medication?

Assess the client’s vital signs.

The nurse should first assess the client’s vital signs to determine the severity of the situation and identify any signs of infection, bleeding, or shock.

The nurse should also monitor the fetal heart rate to assess fetal well-being.

Choice B is wrong because a sterile vaginal exam is not indicated for a client who reports lower abdominal cramping and may increase the risk of infection or rupture of membranes.

Choice C is wrong because administering tocolytic medication is not the first action the nurse should take.

Tocolytic medication may be used to inhibit uterine contractions and prolong pregnancy, but only after assessing the client’s and fetus’s condition and obtaining a prescription from the provider.

Choice D is wrong because monitoring the fetal heart rate is not the first action the nurse should take.

Monitoring the fetal heart rate is important to assess fetal well-being, but it does not take priority over assessing the client’s vital signs.

Tocolytics are a category of drugs used to delay the labor process.These may be used in situations when a pregnant person begins showing signs of preterm labor —which is any time before 37 weeks of completed pregnancy.Tocolytics may help delay labor by two to seven days.

Some possible explanations for the other choices are:

• Choice A. Administering intravenous fluids.

This is not a correct answer because intravenous fluids are not effective in suppressing uterine contractions.They may be used to correct dehydration or electrolyte imbalance, which can sometimes trigger preterm labor, but they are not a primary intervention for preterm labor.

• Choice C. Administering corticosteroids.

This is not a correct answer because corticosteroids are not tocolytics.They do not stop or slow down uterine contractions, but they help accelerate fetal lung maturity and reduce the risk of neonatal respiratory distress syndrome and other complications of prematurity.

Corticosteroids are often given along with tocolytics, but they have a different function and mechanism of action.

• Choice D. Administering antibiotics.

This is not a correct answer because antibiotics are not tocolytics.They may be used to treat infections that can cause or complicate preterm labor, such as chorioamnionitis or group B streptococcus, but they do not directly affect uterine contractions.

Antibiotics may be given along with tocolytics, but they have a different function.