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
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Correct Answer is D
Explanation
All of the above.The nurse should include all of these signs and symptoms in the teaching as they may indicate pre-term labor.Pre-term labor occurs when regular contractions begin to open the cervix before 37 weeks of pregnancy.
Choice A is wrong because decreased fetal movement is not a normal sign of pre-term labor, but it may indicate fetal distress or other complications.
Choice B is wrong because increased vaginal discharge is not a normal sign of pre-term labor, but it may indicate infection or rupture of membranes.
Choice C is wrong because pelvic pressure is not a normal sign of pre-term labor, but it may indicate cervical dilation or descent of the fetus.
Correct Answer is A
Explanation
Nitrazine paper test.
This test involves putting a drop of fluid obtained from the vagina onto paper strips containing nitrazine dye.
The strips change color depending on the pH of the fluid.The strips will turn blue if the pH is greater than 6.0, which indicates the presence of amniotic fluid.This test can help confirm rupture of membranes (ROM) in pregnancy, especially when preterm labor is suspected.
Choice B. Ferning test.This test involves examining a sample of vaginal fluid under a microscope and looking for a fern-like pattern that is formed by dried amniotic fluid crystals.This test can also help confirm ROM, but it is less reliable than the nitrazine test because other substances such as cervical mucus, semen, or blood can also cause ferning.
Choice C. Amniotic fluid index.This test involves measuring the amount of amniotic fluid in the uterus using ultrasound.This test can help assess the fetal well-being and detect conditions such as oligohydramnios (low amniotic fluid) or polyhydramnios (high amniotic fluid).This test cannot confirm ROM by itself, but it can be used in combination with other tests to evaluate the status of the pregnancy.
Choice D. Biophysical profile.This test involves using ultrasound and a fetal monitor to assess the fetal heart rate, breathing, movement, muscle tone, and amniotic fluid volume.
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