Which analysis of maternal serum may predict chromosomal abnormalities in the fetus?
Biophysical profile
Lecithin/sphingomyelin [L/S] ratio
Type and crossmatch of maternal and fetal serum
Multiple-marker screening
The Correct Answer is D
Choice A reason: Biophysical profile is a test that assesses the fetal well-being by measuring five parameters: fetal breathing movements, fetal movements, fetal tone, amniotic fluid volume, and fetal heart rate. It does not predict chromosomal abnormalities in the fetus.
Choice B reason: Lecithin/sphingomyelin [L/S] ratio is a test that measures the amount of two phospholipids in the amniotic fluid. It is used to evaluate the fetal lung maturity and the risk of respiratory distress syndrome. It does not predict chromosomal abnormalities in the fetus.
Choice C reason: Type and crossmatch of maternal and fetal serum is a test that determines the blood type and Rh factor of the mother and the fetus. It is used to identify the risk of hemolytic disease of the newborn due to Rh incompatibility. It does not predict chromosomal abnormalities in the fetus.
Choice D reason: Multiple-marker screening is a test that measures the levels of four substances in the maternal serum: alpha-fetoprotein, human chorionic gonadotropin, unconjugated estriol, and inhibin A. It is used to estimate the risk of Down syndrome, trisomy 18, and neural tube defects in the fetus.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","C","E"]
Explanation
Choice A reason: Eating three larger meals a day is not recommended for hyperemesis gravidarum, as it may increase the nausea and vomiting. Instead, the nurse should advise the woman to eat small, frequent meals throughout the day.
Choice B reason: Ice cream may stay down better than other foods, as it is cold, bland, and soothing. The nurse should encourage the woman to try foods that are appealing to her and avoid foods that trigger nausea.
Choice C reason: Eating what sounds good to the woman even if her meals are not well-balanced is acceptable for hyperemesis gravidarum, as the priority is to maintain hydration and nutrition. The nurse should reassure the woman that she can resume a balanced diet once her symptoms improve.
Choice D reason: Avoiding ginger tea or sweet drinks is not necessary for hyperemesis gravidarum, as some women may find them helpful in reducing nausea. The nurse should suggest the woman to experiment with different beverages and see what works for her.
Choice E reason: Eating a high-protein snack at bedtime is beneficial for hyperemesis gravidarum, as it can prevent low blood sugar levels and morning sickness. The nurse should recommend the woman to have a protein-rich food, such as cheese, yogurt, nuts, or eggs, before going to bed.
Correct Answer is D
Explanation
Choice A reason: Cheese is a good source of calcium, protein, and vitamin B12, but not folates. Folate is a water-soluble vitamin that is essential for the synthesis of DNA and the prevention of neural tube defects in the fetus.
Choice B reason: Potatoes are a good source of carbohydrates, potassium, and vitamin C, but not folates. Folate is found mainly in plant-based foods, especially dark green vegetables.
Choice C reason: Chicken is a good source of protein, iron, and zinc, but not folates. Folate is more abundant in legumes, nuts, and seeds than in animal products.
Choice D reason: Green leafy vegetables are a good source of folates, as well as vitamin A, vitamin K, and fiber. Folate is also known as folic acid when it is added to fortified foods or supplements. Pregnant women need at least 600 micrograms of folate per day.
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