A nurse is assisting with the admission of a client who is in preterm labor at 30 weeks of gestation and has a new prescription for betamethasone. Which of the following statements should the nurse make?
"The purpose of this medication is to increase the fetal heart rate.".
"The purpose of this medication is to halt cervical dilation.".
"The purpose of this medication is to stop preterm labour contractions.".
"The purpose of this medication is to boost fetal lung maturity.".
The Correct Answer is D
Choice D rationale:
The nurse should state, "The purpose of this medication is to boost fetal lung maturity.”. The rationale behind this choice is that betamethasone is a corticosteroid medication commonly administered to women at risk of preterm delivery between 24 and 34 weeks of gestation. Its primary goal is to accelerate fetal lung maturation by promoting the production of surfactant, a substance that coats the lungs and prevents their collapse. By enhancing lung development, the medication helps reduce the risk of respiratory distress syndrome and other respiratory complications that premature infants might face. It does not directly impact fetal heart rate (Choice A), halt cervical dilation (Choice B), or stop preterm labor contractions (Choice C).
Choice A rationale:
The nurse should not state, "The purpose of this medication is to increase the fetal heart rate.”. Betamethasone does not affect the fetal heart rate, as it is primarily used to enhance lung maturity, as mentioned earlier. The incorrect statement may lead to confusion and misunderstanding of the medication's intended purpose.
Choice B rationale:
The nurse should not state, "The purpose of this medication is to halt cervical dilation.”. Betamethasone does not stop or halt cervical dilation. Its main action is on the fetal lungs to promote surfactant production. Cervical dilation is a natural process that occurs during labor and is not influenced by this medication.
Choice C rationale:
The nurse should not state, "The purpose of this medication is to stop preterm labor contractions.”. Betamethasone is not used to stop or prevent preterm labor contractions directly. Instead, its focus is on improving fetal lung maturity to enhance the baby's respiratory function once born prematurely.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The correct answer is choice A: Respiratory rate of 16/min.
Choice A rationale:
A respiratory rate of 16/min is within the normal range for adults, which is typically between 12 to 20 breaths per minute. In the context of severe preeclampsia, maintaining a normal respiratory rate is crucial when administering magnesium sulfate IV, as one of the signs of magnesium toxicity is respiratory depression. Therefore, a respiratory rate of 16/min indicates that the client is not experiencing respiratory depression and it is safe to continue the magnesium sulfate infusion.
Choice B rationale:
A heart rate of 60/min is at the lower end of the normal range, which is 60 to 100 beats per minute for adults. However, bradycardia or a low heart rate can be a sign of magnesium sulfate toxicity, especially if accompanied by other symptoms such as hypotension or altered mental status. Without additional context, a heart rate of 60/min alone does not necessarily indicate it is unsafe to continue the infusion, but it would require further assessment.
Choice C rationale:
A urine output of 50 mL in 4 hours is significantly below the expected minimum of 30 mL/hour for adults. Adequate urine output is an important indicator of kidney function and is essential for the excretion of magnesium. In the case of magnesium sulfate infusion for severe preeclampsia, a low urine output could indicate renal insufficiency and an increased risk of magnesium toxicity. Therefore, a urine output of 50 mL in 4 hours is a contraindication for continuing the infusion without further evaluation.
Choice D rationale:
Diminished deep-tendon reflexes can be a sign of magnesium toxicity. Deep-tendon reflexes are assessed to monitor for signs of magnesium overdose during infusion, as magnesium acts as a central nervous system depressant at high levels. If deep-tendon reflexes are diminished, it may suggest that the serum magnesium levels are too high, and the infusion should be paused or discontinued to prevent further toxicity.
In summary, the only finding that clearly indicates it is safe to continue the magnesium sulfate infusion is a normal respiratory rate, as provided in choice A. The other options either require further assessment or are indicators of potential magnesium toxicity.
Correct Answer is B
Explanation
Choice A rationale:
Severe nausea and vomiting are not indicative of an ectopic pregnancy. While nausea and vomiting are common symptoms in early pregnancy, they are not specific to ectopic pregnancies. These symptoms are more likely associated with typical pregnancy changes.
Choice B rationale:
Pelvic pain is a crucial finding that the nurse should expect in a possible ectopic pregnancy. As the pregnancy implants outside of the uterus, usually in the fallopian tube, it can cause sharp and severe pain in the pelvic region. This pain may be unilateral and can be accompanied by shoulder pain due to blood or fluid irritating the diaphragm.
Choice C rationale:
Uterine enlargement greater than expected for gestational age is not likely in an ectopic pregnancy. In fact, uterine enlargement may not be noticeable at all in an ectopic pregnancy since the embryo is not developing in the uterus.
Choice D rationale:
Copious vaginal bleeding is more commonly associated with miscarriages or other complications in intrauterine pregnancies. In an ectopic pregnancy, vaginal bleeding may occur, but it is typically lighter and often described as spotting.
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