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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Correct Answer is C
Explanation
Choice A rationale
Decreased pain level can be an effect of addressing the cause of pain, but it doesn't indicate improved uterine tone or resolution of atony.
Choice B rationale
Stable blood pressure is important, but it is not the direct outcome of improved uterine tone or the resolution of uterine atony.
Choice C rationale
A firm fundus at or below the umbilicus indicates successful contraction of the uterus, resolving uterine atony and reducing bleeding.
Choice D rationale
Reduced lochial flow can indicate decreased bleeding, but it does not directly indicate improved uterine tone or resolution of uterine atony.
Correct Answer is B
Explanation
Choice A rationale
While massaging the fundus and ensuring IV access are correct initial actions, methylergonovine (Methergine) is typically used for patients without hypertensive history due to its
potential to raise blood pressure.
Choice B rationale
This option correctly identifies initial steps and appropriate medication. Carboprost-tromethamine (Hemabate) is effective in controlling postpartum hemorrhage and can be safely
used in patients with hypertension when oxytocin is insufficient.
Choice C rationale
Quantifying blood loss is essential but it is not an immediate priority when the patient is showing signs of significant bleeding and instability. Immediate intervention to control bleeding
takes precedence.
Choice D rationale
Assisting the patient to the restroom and then massaging the fundus overlooks the immediate need to control bleeding. This approach may delay necessary treatment and increase
the risk of further hemorrhage.
Choice E rationale
Straight catheterization and oxytocin maintenance are part of the management of postpartum hemorrhage but do not address the immediate need to ensure uterine contraction and
control active bleeding as effectively as the initial steps outlined in Choice B. .