A client at 28 weeks' gestation with intact membranes is admitted with the following findings: contractions every 5 minutes lasting 60 seconds, 3 cm dilated, 80% effaced.
Which of the following medications will the obstetrician likely order?
Magnesium sulfate.
Morphine sulfate.
Terbutaline.
Betamethasone.
The Correct Answer is C
Choice A rationale
Magnesium sulfate is primarily used for neuroprotection in preterm infants and to prevent seizures in severe preeclampsia, not as a first-line tocolytic for preterm labor.
Choice B rationale
Morphine sulfate is an opioid analgesic used for pain management, not for inhibiting preterm labor contractions.
Choice C rationale
Terbutaline is a beta-agonist used as a tocolytic to relax uterine muscles and delay preterm labor. It helps decrease the intensity and frequency of contractions, making it suitable for managing preterm labor.
Choice D rationale
Betamethasone is a corticosteroid used to accelerate fetal lung maturity in preterm labor, not for direct contraction inhibition.
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View Related questions
Correct Answer is A
Explanation
Choice A rationale
Blood pressure of 160/110 indicates severe preeclampsia and warrants immediate intervention to prevent complications. Stopping oxytocin is part of the management of severe
preeclampsia to avoid exacerbating the condition.
Choice B rationale
Frequency of contractions every 3 minutes is within the normal range during labor induction and does not warrant stopping the infusion unless there are other concerns.
Choice C rationale
A fetal heart rate of 155 bpm with early decelerations may require close monitoring but does not necessarily warrant stopping the oxytocin infusion. Early decelerations are typically a
normal physiological response.
Choice D rationale
Frequency of contractions every 3 minutes is expected during active labor and is generally not a cause to stop the oxytocin infusion. The nurse should continue to monitor the labor
progression closely.
Correct Answer is C
Explanation
Choice A rationale
Dexamethasone does not directly stop labor contractions; instead, it is used to enhance fetal lung maturity.
Choice B rationale
Dexamethasone is not for infection prevention; antibiotics are used for that purpose in cases of premature rupture of membranes.
Choice C rationale
Dexamethasone is administered to enhance fetal lung maturity, reducing the risk of respiratory distress syndrome in preterm infants.
Choice D rationale
Dexamethasone is not used for pain relief in preterm labor; other medications are prescribed for pain management.