A nurse is caring for a pre-term newborn who has a patent ductus arteriosus (PDA).
Which of the following medications should the nurse expect to administer to close the ductus arteriosus?
Indomethacin
Prostaglandin E1
Furosemide
Digoxin
The Correct Answer is A
Indomethacin is a nonsteroidal anti-inflammatory drug (NSAID) that helps close the ductus arteriosus, a blood vessel connecting two arteries of the heart (aorta and pulmonary artery) in fetus. This drug is effective only among premature babies.
Choice B. Prostaglandin E1 is wrong because it is used to keep the ductus arteriosus open in some congenital heart defects that require surgery.
Choice C. Furosemide is wrong because it is a diuretic that reduces fluid retention and blood pressure, but does not affect the ductus arteriosus.
Choice D. Digoxin is wrong because it is a cardiac glycoside that strengthens the heart muscle contractions and regulates the heart rhythm, but does not affect the ductus arteriosus.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
This medication will help relax my uterus and stop contractions.
Magnesium sulfate is a tocolytic, a medication used to suppress uterine contractions and delay preterm delivery.The exact mechanism through which magnesium sulfate inhibits contractions is unknown, but researchers believe it likely works by lowering calcium levels in the uterine muscles.
Choice A is wrong because magnesium sulfate is not used to prevent seizures in case of preeclampsia.
Preeclampsia is a condition characterized by high blood pressure and protein in the urine during pregnancy.Magnesium sulfate may be used to treat seizures if they occur with eclampsia, which is a severe complication of preeclampsia.
Choice B is wrong because magnesium sulfate does not help mature the baby’s lungs in case of preterm birth.
Magnesium sulfate may have some neuroprotective effects for the baby, but it does not affect lung development.Steroids are usually given to pregnant women at risk of preterm delivery to help accelerate fetal lung maturation.
Choice D is wrong because magnesium sulfate does not lower blood pressure in case it gets too high.
Magnesium sulfate may have some vasodilatory effects, but it is not used as an antihypertensive agent.Other medications, such as hydralazine or labetalol, are used to treat high blood pressure during pregnancy.
Correct Answer is A
Explanation
History of urinary tract infections.According to the Mayo Clinic, untreated vaginal infections, such as urinary tract infections or sexually transmitted infections, are risk factors for preterm labor.
These infections can cause inflammation and irritation of the cervix, which can trigger contractions and cervical dilation.
Choice B is wrong because maternal age of 25 years is not a risk factor for preterm labor.In fact, women younger than 18 or older than 35 are more likely to have a preterm delivery.
Choice C is wrong because singleton pregnancy is not a risk factor for preterm labor.On the contrary, being pregnant with twins, triplets, or more (called "multiple gestations") is associated with a higher risk of preterm labor and birth.
Choice D is wrong because cervical length of 3 cm is not a risk factor for preterm labor.A short cervix (less than 2.5 cm) or a cervix that shortens in the second trimester instead of the third trimester is a risk factor for preterm delivery.A normal cervical length ranges from 3 to 5 cm during pregnancy.
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