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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?

A.

Magnesium sulfate.

B.

Morphine sulfate.

C.

Terbutaline.

D.

Betamethasone.

Answer and Explanation

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 C

Explanation

Choice A rationale

While maternal lacerations are a risk during childbirth, they are not the greatest risk in cases of fetal dystocia. The focus is primarily on fetal wellbeing.

Choice B rationale

Fetal injury such as bruising can occur with dystocia, but the primary concern is the potential for severe, life-threatening complications.

Choice C rationale

Neonatal asphyxia related to prolonged labor is the greatest risk with fetal dystocia. Prolonged labor can lead to decreased oxygen supply to the fetus, causing asphyxia and

potential brain injury.

Choice D rationale

Increased consideration for a cesarean delivery is a possible outcome of fetal dystocia, but it is a management decision rather than a direct risk to the baby’s immediate health.

Correct Answer is B

Explanation

Choice A rationale

Decreased muscle tone is not typically associated with neonatal abstinence syndrome (NAS). Instead, NAS often presents with hypertonia or increased muscle tone due to

withdrawal symptoms.

Choice B rationale

A continuous high-pitched cry is a hallmark sign of NAS, indicating the newborn is experiencing withdrawal and discomfort. This symptom results from the overstimulation of the

central nervous system.

Choice C rationale

Newborns with NAS often have difficulty sleeping and may sleep for shorter periods due to irritability and discomfort. Prolonged sleep after feeding is not characteristic of NAS.

Choice D rationale

Tremors in newborns with NAS are usually pronounced and continuous, not just when disturbed. These tremors are a result of withdrawal effects on the nervous system.

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