A nurse in a provider's office is caring for a client who is at 34 weeks of gestation and at risk for placental abruption. The nurse should recognize that which of the following is the most common risk factor for abruption?

Choice A reason: Initiation of pushing is not an appropriate nursing action, as it can increase the bleeding and the risk of placental separation, which can cause fetal hypoxia, hemorrhage, or shock. Pushing is contraindicated in clients with placenta previa, which is a condition where the placenta covers the cervical opening and can cause painless, bright red bleeding in the third trimester.

Choice B reason: Examination to determine cervical status is not an appropriate nursing action, as it can cause trauma and perforation of the placenta, which can lead to severe bleeding and infection. Examination is contraindicated in clients with placenta previa, unless it is confirmed by ultrasound that the placenta is not low-lying or covering the cervix.

Choice C reason: Preparation for cesarean birth is an appropriate nursing action, as it is the preferred mode of delivery for clients with placenta previa, especially if the bleeding is heavy, the fetus is mature, or the fetal distress is present. Cesarean birth can prevent the complications of placenta previa, such as fetal hypoxia, hemorrhage, or shock.

Choice D reason: A magnesium sulfate infusion is not an appropriate nursing action, as it is a drug that prevents seizures and lowers the blood pressure in clients with severe preeclampsia, which is a hypertensive disorder of pregnancy. Magnesium sulfate is not indicated for clients with placenta previa, unless they also have severe preeclampsia or eclampsia.

Choice A reason: This statement is incorrect, as surfactant is not an antibiotic and does not treat infections. Surfactant is a substance that is naturally produced by the lungs to reduce the surface tension and prevent the alveoli from collapsing. Premature infants may have insufficient surfactant, which can cause RDS.

Choice B reason: This statement is partially true, as surfactant can help reduce episodes of periodic apnea, which is a condition where the newborn stops breathing for more than 20 seconds. However, this is not the main purpose of surfactant therapy, and other interventions, such as oxygen, ventilation, and caffeine, may be needed to treat apnea.

Choice C reason: This statement is correct, as surfactant improves the ability of the baby's lungs to exchange oxygen and carbon dioxide, which are essential for life. Surfactant therapy can improve the lung function, reduce the need for mechanical ventilation, and prevent complications, such as bronchopulmonary dysplasia and pulmonary hemorrhage.

Choice D reason: This statement is false, as surfactant does not affect the level of sedation in the newborn. Surfactant is administered through an endotracheal tube, which may require sedation to reduce discomfort and agitation. The nurse should monitor the newborn's vital signs, oxygen saturation, and pain level during and after the procedure.