A nurse is admitting a client who is at 30 weeks of gestation and has pre-term labor.
Which of the following medications should the nurse anticipate administering to prevent fetal respiratory distress syndrome?
Betamethasone
Magnesium sulfate
Nifedipine
Indomethacin
The Correct Answer is A
Betamethasone is a corticosteroid that is given to pregnant women who are at risk of preterm delivery to enhance fetal lung maturity and prevent respiratory distress syndrome. It is usually given in two doses, 24 hours apart, and takes effect within 24 hours of administration.
Choice B. Magnesium sulfate is wrong because it is used to prevent seizures in women with severe preeclampsia or eclampsia, not to prevent respiratory distress syndrome.
Choice C. Nifedipine is wrong because it is a calcium channel blocker that is used to inhibit uterine contractions and prolong pregnancy in women with preterm labor, not to prevent respiratory distress syndrome.
Choice D. Indomethacin is wrong because it is a nonsteroidal anti-inflammatory drug that is used to inhibit prostaglandin synthesis and reduce uterine activity in women with preterm labor, not to prevent respiratory distress syndrome. However, it can also cause premature closure of the ductus arteriosus in the fetus and should be avoided after 32 weeks of gestation.
Normal ranges for gestational age are 37 to 42 weeks.
Preterm labor is defined as regular uterine contractions with cervical changes.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Ultrasound.
An ultrasound can help determine the gestational age, fetal growth, placental location, and amniotic fluid volume of the fetus.
These factors can affect the risk of pre-term labor and delivery.
An ultrasound can also detect cervical changes that may indicate pre-term labor.
Choice B is wrong because a blood count is not specific for pre-term labor.
It may be done to check for anemia, infection, or other conditions that may affect the pregnancy, but it does not directly assess the risk of pre-term labor.
Choice C is wrong because a urine culture is not specific for pre-term labor.
It may be done to check for urinary tract infection, which can cause pre-term labor, but it does not directly assess the risk of pre-term labor.
Choice D is wrong because an amniocentesis is not usually done for pre-term labor.
It may be done to check for fetal lung maturity, chromosomal abnormalities, or infections, but it is an invasive procedure that carries some risks and complications.
It does not directly assess the risk of pre-term labor.
Correct Answer is A
Explanation
Leukocoria (white pupils) is a symptom of retinopathy of prematurity (ROP), an eye disease that can happen in premature babies.ROP happens when abnormal blood vessels grow on the retina, the light-sensitive layer of tissue in the back of the eye.
Choice B is wrong because strabismus (crossed eyes) is not a symptom of ROP, but a possible complication that can occur later in life.
Choice C is wrong because nystagmus (involuntary eye movements) is not a symptom of ROP, but another possible complication that can occur later in life.
Choice D is wrong because it includes choices B and C, which are incorrect.
Normal ranges for gestational age and birth weight are 38 to 42 weeks and 5.5 to 10 pounds, respectively.Babies born before 31 weeks or weighing less than 3 pounds are at risk for ROP.
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