A nurse is admitting a client who is at 30 weeks of gestation and is in preterm labor. The client has a new order for betamethasone and asks the nurse about the purpose of this medication. The nurse should provide which of the following explanations?
"It promotes fetal lung maturity."
"It halts cervical dilation."
"It increases the fetal heart rate."
"It is used to stop preterm labor contractions."
The Correct Answer is A
Choice A reason: This statement is correct, as betamethasone is a corticosteroid that is given to pregnant women who are at risk of delivering before 34 weeks of gestation. Betamethasone stimulates the production of surfactant, which is a substance that prevents the alveoli from collapsing and improves the lung function of the fetus.
Choice B reason: This statement is incorrect, as betamethasone does not affect the cervical dilation, which is a sign of labor progression. Betamethasone does not stop or delay labor, but rather reduces the complications of prematurity, such as respiratory distress syndrome, intraventricular hemorrhage, or necrotizing enterocolitis.
Choice C reason: This statement is incorrect, as betamethasone does not increase the fetal heart rate, which is a measure of fetal well-being. Betamethasone may cause transient fetal bradycardia, which is a decrease in the fetal heart rate, due to the increased vagal tone and blood pressure. The nurse should monitor the fetal heart rate and notify the provider if there are any signs of fetal distress.
Choice D reason: This statement is incorrect, as betamethasone is not used to stop preterm labor contractions, which are caused by the uterine muscle activity. Betamethasone does not have any tocolytic effect, which is the ability to inhibit uterine contractions. Other medications, such as magnesium sulfate, nifedipine, or indomethacin, may be used to stop preterm labor contractions.
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Related Questions
Correct Answer is C
Explanation
Choice A reason: Prostaglandin E2 is not an appropriate medication for the client, because it is a uterotonic agent that stimulates uterine contractions and cervical ripening. Prostaglandin E2 is used to induce labor, not to stop it.
Choice B reason: Methylergonovine is not an appropriate medication for the client, because it is a uterotonic agent that causes sustained uterine contractions and vasoconstriction. Methylergonovine is used to prevent or treat postpartum hemorrhage, not to stop preterm labor.
Choice C reason: Terbutaline is an appropriate medication for the client, because it is a tocolytic agent that relaxes the uterine smooth muscle and inhibits contractions. Terbutaline is used to delay preterm labor and prolong pregnancy.
Choice D reason: Oxytocin is not an appropriate medication for the client, because it is a uterotonic agent that stimulates uterine contractions and milk ejection. Oxytocin is used to augment labor, not to stop it.
Correct Answer is A
Explanation
Choice A reason: Erythroblastosis fetalis is the correct answer, as it is a hemolytic disease of the newborn that occurs when the mother is Rh-negative and the newborn is Rh-positive, and the maternal antibodies cross the placenta and destroy the newborn's red blood cells, causing anemia, jaundice, and edema. Rh0 (D) immunoglobulin is an injection that prevents the formation of Rh-positive antibodies in the mother, and reduces the risk of erythroblastosis fetalis in the current or subsequent pregnancies.
Choice B reason: Hypobilirubinemia is not the correct answer, as it is a low level of bilirubin in the blood that can cause pale skin, poor feeding, or lethargy. Hypobilirubinemia is not related to the Rh factor or the Rh0 (D) immunoglobulin injection, and it is not a common or serious complication in the newborn.
Choice C reason: Biliary atresia is not the correct answer, as it is a congenital defect of the bile ducts that prevents the flow of bile from the liver to the intestine, causing jaundice, dark urine, and clay-colored stools. Biliary atresia is not related to the Rh factor or the Rh0 (D) immunoglobulin injection, and it is not a preventable complication in the newborn.
Choice D reason: Transient clotting difficulties is not the correct answer, as it is a bleeding disorder that occurs due to the deficiency of vitamin K, which is essential for the synthesis of clotting factors. Transient clotting difficulties is not related to the Rh factor or the Rh0 (D) immunoglobulin injection, and it is preventable by administering vitamin K to the newborn.
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