A nurse is caring for a client who is receiving magnesium sulfate for pre-term labor.

Which of the following assessments should the nurse perform to evaluate the therapeutic effect of the medication?

Regular uterine contractions occurring every 15 minutes.

This finding suggests that the client may have placental abruption, which is a serious complication that requires immediate medical attention.Placental abruption is the premature separation of the placenta from the uterine wall, which can cause heavy bleeding, pain, and fetal distress.

Choice B is wrong because low back pain and pelvic pressure are common symptoms of preterm labor, which is not as urgent as placental abruption.

Choice C is wrong because a change in vaginal discharge is not a specific sign of any complication and may be normal in pregnancy.

Choice D is wrong because rupture of membranes is not a priority finding in this case, unless it is associated with infection or cord prolapse.

Drinking enough water can help prevent dehydration, which can trigger preterm labor contractions.Dehydration can also cause low amniotic fluid levels, which can affect fetal growth and development.

Choice A is wrong because avoiding sexual intercourse until term is not necessary for most women at risk for preterm labor.Sexual activity does not cause preterm labor unless there are other complications, such as placenta previa or cervical insufficiency.

Choice C is wrong because lying down when feeling contractions may not stop preterm labor.If a woman has regular contractions that cause cervical change, she should seek medical attention as soon as possible.Lying down may also reduce blood flow to the uterus and placenta, which can affect fetal oxygenation.

Choice D is wrong because taking aspirin for pelvic pain is not recommended for pregnant women.Aspirin can increase the risk of bleeding and affect fetal blood circulation.

Pelvic pain may be a sign of preterm labor or other complications, so it should be evaluated by a health care provider