A nurse is assessing a client for pre-term labor.

Which diagnostic test should the nurse anticipate being ordered for this client?

The client should not limit their physical activity and rest as much as possible, unless advised by their provider.Excessive rest and inactivity can increase the risk of blood clots and decrease blood circulation, which can affect the placenta and the fetus.The client should follow the recommended guidelines for physical activity during pregnancy, unless they have a medical condition that requires bed rest or reduced activity.

Choice A is wrong because smoking and drinking alcohol during pregnancy are known risk factors for preterm labor and birth.Smoking can reduce blood flow to the placenta and affect fetal growth and development, while alcohol can cause fetal alcohol spectrum disorders and other complications.

Choice B is wrong because reporting any vaginal bleeding or fluid leakage to the provider is important to prevent or treat preterm labor and birth.Bleeding can indicate placenta previa or placental abruption, which are serious conditions that can cause premature delivery or fetal distress.Fluid leakage can indicate rupture of membranes, which can increase the risk of infection and preterm labor.

Choice D is wrong because drinking plenty of fluids and eating a balanced diet are beneficial for the health of the mother and the fetus.Dehydration can cause uterine contractions and trigger preterm labor, while malnutrition can affect fetal growth and development.A balanced diet can also help prevent or manage conditions like diabetes, high blood pressure, and anemia, which are risk factors for preterm labor and birth.

According to the search results, magnesium sulfate can have a negative effect on the fetal heart rate (FHR) by lowering the baseline, decreasing the variability, and reducing the reactivity or acceleration pattern.Absent variability means that there is no fluctuation in the FHR and it indicates fetal hypoxia or acidosis.

This is a potential adverse effect of magnesium sulfate on the fetus and requires immediate intervention.

Choice A.Accelerations is wrong because accelerations are transient increases in the FHR that indicate fetal well-being.They are not affected by magnesium sulfate.

Choice B.Early decelerations is wrong because early decelerations are decreases in the FHR that occur with uterine contractions and are caused by fetal head compression.They are benign and do not indicate fetal distress.They are not associated with magnesium sulfate.

Choice C.Variable decelerations is wrong because variable decelerations are abrupt decreases in the FHR that vary in shape, duration, and timing and are caused by umbilical cord compression.

They may or may not indicate fetal compromise.