A nurse is caring for a client who gave birth 1 hour ago and is experiencing excessive vaginal bleeding. Which of the following medications should the nurse anticipate the provider will prescribe?

Choice A rationale Tranexamic acid (TXA) is an antifibrinolytic agent that works by reversibly blocking lysine binding sites on plasminogen and plasmin. This action inhibits the conversion of plasminogen to plasmin and prevents the breakdown of fibrin clots, thereby promoting clot stabilization and reducing blood loss. It is a key medication, often used as an adjunct to uterotonics, in the treatment of postpartum hemorrhage (PPH) which is the likely cause of excessive vaginal bleeding. Choice B rationale Betamethasone is a corticosteroid primarily used for fetal lung maturity enhancement when preterm birth is anticipated, typically between 24 and 34 weeks of gestation. It is not used for managing acute PPH. Its mechanism involves inducing the production of surfactant in the fetal lungs, thereby reducing the risk of respiratory distress syndrome in preterm infants. Choice C rationale Magnesium sulfate is an anticonvulsant and tocolytic agent. Its primary uses are for seizure prophylaxis in preeclampsia or for short-term inhibition of preterm labor. It is a smooth muscle relaxant and can actually cause uterine atony, which is the most common cause of PPH, thus it would be contraindicated or used with extreme caution in a bleeding client. Choice D rationale Terbutaline is a beta-2 adrenergic receptor agonist used as a tocolytic to relax the smooth muscles of the uterus, thereby inhibiting preterm labor contractions. Since excessive vaginal bleeding in the immediate postpartum period is often due to uterine atony (relaxation), a drug that further relaxes the uterus would be contraindicated as it would exacerbate the hemorrhage by reducing the myometrial tone.