A nurse is caring for a pregnant woman at 30 weeks of gestation in preterm labor. The woman's physician orders
betamethasone 12 mg IM for two doses, with the first dose to begin at 11 am. In implementing this order, the nurse should:
Consult the physician, because the dose is too high.
Schedule the second dose for 11 am on the next day.
Prepare to administer the medication intramuscularly between contractions.
The Correct Answer is C
Choice a) Consult the physician, because the dose is too high is incorrect because this is not a necessary or appropriate action for a nurse who is following a valid order for betamethasone. Betamethasone is a corticosteroid that can be used to accelerate fetal lung maturation and reduce the risk of respiratory distress syndrome and other complications in preterm infants. The recommended dose for betamethasone is 12 mg IM every 24 hours for two doses, which is exactly what the physician ordered. Therefore, there is no reason to question or consult the physician about the dose, as it is within the normal range and based on evidence-based practice.
Choice b) Schedule the second dose for 11 am on the next day is incorrect because this is not a correct or accurate way to implement the order for betamethasone. Betamethasone should be given at least 24 hours apart, but not more than 48 hours apart, to achieve optimal fetal lung development and neonatal outcomes. Scheduling the second dose for 11 am on the next day would result in a 24-hour interval between the doses, which is acceptable, but not ideal. The best time to schedule the second dose would be between 24 and 48 hours after the first dose, such as at 11 pm on the same day or at 7 am on the next day.
Choice c) Prepare to administer the medication intramuscularly between contractions is correct because this is the best and most appropriate way to implement the order for betamethasone. Betamethasone should be given by intramuscular injection in a large muscle mass, such as the deltoid or gluteus, using a 21-gauge needle and a syringe with an air lock. The injection site should be cleaned with alcohol and aspirated before injecting. The medication should be administered between contractions, when the uterine blood flow is maximal and the fetal absorption is optimal. The nurse should also monitor the woman and the fetus for any adverse effects of betamethasone, such as maternal hyperglycemia, hypertension, infection, or edema, or fetal tachycardia, hypoglycemia, or infection.
Choice d) Explain to the woman that this medication will reduce her heart rate and help her to breathe easier is incorrect because this is not a true or relevant statement about betamethasone. Betamethasone does not have any direct effect on the maternal heart rate or respiratory function, as it is mainly intended to improve the fetal lung maturation and reduce the risk of respiratory distress syndrome and other complications in preterm infants.
Betamethasone may cause some side effects such as increased blood pressure, blood sugar, or fluid retention in the mother, which may affect her cardiovascular or respiratory status indirectly. However, these effects are usually transient and mild, and do not outweigh the benefits of betamethasone for the fetus. Therefore, this statement is misleading and inaccurate.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A) Decreased metabolic rate is incorrect because this is not a result of hypothermia in the newborn, but rather a cause of it. Metabolic rate is the speed at which the body uses energy to perform its functions. Newborns have a high metabolic rate, which helps them to maintain a normal body temperature of 36.5°C to 37.5°C (97.7°F to 99.5°F). However, some factors can lower the metabolic rate of newborns, such as prematurity, low birth weight, infection, or hypoglycemia. A low metabolic rate can make the newborn more susceptible to heat loss and hypothermia, which is a condition that occurs when the body temperature drops below 36°C (96.8°F). Therefore, this response is inaccurate and misleading.
Choice B) Decreased oxygen demands is incorrect because this is not a result of hypothermia in the newborn, but rather a consequence of it. Oxygen demand is the amount of oxygen that the body needs to function properly.
Newborns have a high oxygen demand, which helps them to support their growth and development. However, some factors can decrease the oxygen demand of newborns, such as hypothermia, sedation, or asphyxia. A low oxygen demand can impair the oxygen delivery and utilization by the tissues and organs, leading to hypoxia, acidosis, or organ failure. Therefore, this response is irrelevant and inaccurate.
Choice C) Shivering to generate heat is incorrect because this is not a result of hypothermia in the newborn, but rather a mechanism that is absent in them. Shivering is an involuntary contraction of the muscles that produces heat and raises the body temperature. It is a common response to cold exposure in adults and older children, but not in newborns. Newborns do not have the ability to shiver, as their muscles are immature and lack glycogen stores.
Instead, they rely on other methods to generate heat, such as non-shivering thermogenesis, which involves burning brown fat in certain areas of the body. Therefore, this response is irrelevant and inaccurate.
Choice D) Increased glucose demands is correct because this is a result of hypothermia in the newborn that can cause complications. Glucose demand is the amount of glucose that the body needs to produce energy and maintain its functions. Newborns have a high glucose demand, which helps them to support their metabolic rate and thermoregulation. However, some factors can increase the glucose demand of newborns, such as hypothermia, stress, or infection. A high glucose demand can deplete the glucose stores and cause hypoglycemia, which is a low level of glucose in the blood that can lead to seizures, brain damage, or death. Therefore, this response is clear and accurate.
Correct Answer is A
Explanation
Choice a) This could result in profound bleeding is correct because this is the primary reason why an internal examination should be avoided for a client who has placenta previa. Placenta previa is a condition where the placenta covers part or all of the cervix, preventing normal delivery. An internal examination involves inserting a gloved finger or a speculum into the vagina and cervix to assess their dilation, effacement, position, and station. This can cause trauma to the cervix or the placenta, which can trigger severe hemorrhage and endanger the mother and the fetus. Therefore, this explanation is accurate and appropriate.
Choice b) This could initiate preterm labor is incorrect because this is not the main reason why an internal examination should be avoided for a client who has placenta previa. Placenta previa is a condition where the placenta covers part or all of the cervix, preventing normal delivery. An internal examination may stimulate uterine contractions, which can lead to preterm labor and delivery. However, this is not the most serious or likely complication of an internal examination for a client who has placenta previa, as the bleeding risk is much higher and more urgent. Therefore, this explanation is incomplete and misleading.
Choice c) There is an increased risk of introducing infection is incorrect because this is not a specific reason why an internal examination should be avoided for a client who has placenta previa. Placenta previa is a condition where the placenta covers part or all of the cervix, preventing normal delivery. An internal examination may introduce bacteria or other microorganisms into the vagina or cervix, which can cause infection and inflammation. However, this is a general risk that applies to any pregnant woman who undergoes an internal examination, not just those who have placenta previa. Therefore, this explanation is irrelevant and inaccurate.
Choice d) There is an increased risk of rupture of the membranes is incorrect because this is not a relevant reason why an internal examination should be avoided for a client who has placenta previa. Placenta previa is a condition where the placenta covers part or all of the cervix, preventing normal delivery. An internal examination may cause rupture of the membranes, which are the sacs that contain the amniotic fluid and the fetus. However, this is not a significant or common complication of an internal examination for a client who has placenta previa, as the membranes are usually located above or away from the placenta and cervix. Therefore, this explanation is improbable and inaccurate.
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