A nurse is admitting a patient who is at 30 weeks of gestation and is in preterm labor.The patient has a new prescription for betamethasone and asks the nurse about the purpose of this medication. Which explanation should the nurse provide?
“It increases the fetal heart rate.”.
“It promotes fetal lung maturity.”.
“It is used to stop preterm labor contractions.”.
“It halts cervical dilation.”.
The Correct Answer is B
Choice A rationale
Betamethasone does not typically increase the fetal heart rate14.
Choice B rationale
Betamethasone is often given to pregnant women who are at risk of preterm birth to promote fetal lung maturity. It helps speed up the development of the baby’s lungs and other organs14.
Choice C rationale
Betamethasone is not used to stop preterm labor contractions14.
Choice D rationale
Betamethasone does not halt cervical dilation14.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
An Apgar score of 7 is considered fairly low and would typically be associated with a newborn who has more significant health concerns.
Choice B rationale
An Apgar score of 8 is considered to be within the normal range. This score would be consistent with a newborn who has a pink trunk and head, bluish hands and feet, flexed extremities, a weak and slow cry, a heart rate of 130/min, and cries in response to suctioning.
Choice C rationale
An Apgar score of 9 is considered to be within the normal range. However, given the newborn’s weak and slow cry, an Apgar score of 9 would be less likely.
Choice D rationale
An Apgar score of 10 is very unusual, as almost all newborns lose 1 point for blue hands and feet, which is normal for after birth.
Correct Answer is C
Explanation
Choice A rationale
Administering oxygen at 10 L/min via a non-rebreather mask is a common intervention for fetal distress, but it is not the first action a nurse should take when a decrease in fetal heart rate is observed.
Choice B rationale
Applying a fetal scalp electrode can provide a more accurate fetal heart rate reading, but it is an invasive procedure and is not the first action a nurse should take when a decrease in fetal heart rate is observed.
Choice C rationale
Changing the client’s position is the correct action. This is often the first intervention for a decrease in fetal heart rate because it can relieve possible compression of the umbilical cord, which can improve fetal circulation and increase the fetal heart rate.
Choice D rationale
Increasing the rate of the IV infusion can increase maternal blood volume and improve placental blood flow, but it is not the first action a nurse should take when a decrease in fetal heart rate is observed.
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