A nurse is admitting a client who has a diagnosis of preterm labor. The nurse anticipates an order by the provider for which of the following medications?
A.
Prostaglandin E2
B.
Methylergonovine
C.
Terbutaline
D.
Oxytocin
The Correct answer and Explanation is:
The correct answer is C. Terbutaline.
Explanation:
Preterm labor is defined as regular contractions resulting in cervical changes occurring before 37 weeks of gestation. When a client presents with this diagnosis, the primary goal of the nursing and medical team is to prevent further progression of labor and improve fetal outcomes. One of the critical interventions is the use of tocolytic agents, which are medications that help to delay preterm labor.
Terbutaline is a tocolytic medication that works as a beta-adrenergic agonist. It relaxes uterine smooth muscle by stimulating beta-2 adrenergic receptors, effectively inhibiting contractions. This medication is typically administered subcutaneously or intravenously and can be used for a short-term period to halt contractions and allow for further fetal development or to administer corticosteroids, which help mature the fetal lungs and other organs.
In contrast, the other options listed are not suitable for managing preterm labor:
- A. Prostaglandin E2 is often used for cervical ripening and induction of labor, rather than for tocolysis.
- B. Methylergonovine is used to treat postpartum hemorrhage and is contraindicated in cases of preterm labor because it stimulates uterine contractions.
- D. Oxytocin is used to induce labor or augment contractions but would not be appropriate for a patient in preterm labor as it could worsen the situation by promoting further contractions.
In summary, the use of terbutaline as a tocolytic agent is crucial in the management of preterm labor, allowing healthcare providers to implement strategies aimed at prolonging pregnancy and ensuring better outcomes for the fetus.