A client at 30 weeks of gestation is experiencing pre-term labor.

Which intervention should the nurse anticipate to suppress uterine contractions?

White blood cell count 25,000/mm3.

This indicates a potential complication of necrotizing enterocolitis (NEC), which is the death of intestinal tissue in premature or sick newborns.A high white blood cell count can be a sign of infection or inflammation in the bowel, which are common features of NEC.

Choice A is wrong because hematocrit 45% is within the normal range for newborns.

Hematocrit measures the percentage of red blood cells in the blood.

A low hematocrit can indicate blood loss or anemia, which can be complications of NEC, but a normal hematocrit does not rule out NEC.

Choice B is wrong because platelets 150,000/mm3 is also within the normal range for newborns.

Platelets are cells that help the blood clot.A low platelet count can indicate a consumption coagulopathy, which is a bleeding disorder that can occur in severe cases of NEC.

However, a normal platelet count does not exclude NEC.

Choice D is wrong because blood glucose 80 mg/dL is also within the normal range for newborns.

Blood glucose measures the amount of sugar in the blood.

A low blood glucose can indicate hypoglycemia, which can be caused by sepsis or other conditions that mimic NEC, but a normal blood glucose does not eliminate NEC.

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.