A nurse is performing a speculum examination on a client who is at 26 weeks of gestation and has pre-term labor.

Which of the following findings indicates a positive FFN test?

Administering tocolytics.Tocolytics are drugs that inhibit uterine contractions and can delay preterm labor for a short time.This can allow time for the administration of corticosteroids and transfer to a tertiary care facility if necessary.

Choice A is wrong because administering intravenous fluids does not reduce uterine activity.It may be used to correct dehydration or electrolyte imbalance, which can be risk factors for preterm labor.

Choice C is wrong because administering corticosteroids does not reduce uterine activity.It may be used to enhance fetal lung maturity and reduce the risk of neonatal complications such as respiratory distress syndrome, intracranial hemorrhage, and necrotizing enterocolitis.

Choice D is wrong because administering antibiotics does not reduce uterine activity.It may be used to treat infections that can trigger preterm labor, such as bacterial vaginosis or chorioamnionitis.

Betamethasone is a corticosteroid that can be given to pregnant women who are at risk of preterm labor to enhance fetal lung maturity and reduce the risk of respiratory distress syndrome in the newborn.

Betamethasone stimulates the production of surfactant, a substance that helps the lungs expand and prevents them from collapsing.

Choice A is wrong because magnesium sulfate is used to prevent seizures in women with preeclampsia or eclampsia, not to enhance fetal lung maturity.

Choice B is wrong because nifedipine is a calcium channel blocker that can be used to relax the uterine muscles and inhibit contractions in preterm labor, but it does not affect fetal lung development.

Choice D is wrong because ampicillin is an antibiotic that can be used to treat infections that may cause preterm labor, such as chorioamnionitis or group B streptococcus, but it does not have any direct effect on fetal lung maturation.