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 D
Explanation
Choice A reason: Asking the woman to reschedule the appointment for the examination is not the best response, as it may delay the detection and treatment of any potential problems. The nurse should inform the woman about the possible effect of the vaginal cream on the Pap test and offer her the option to reschedule or proceed with the examination.
Choice B reason: Asking the woman to describe the symptoms that indicate to her that she has a vaginal infection is a good way to assess the woman's condition and provide education, but it is not the initial response. The nurse should first inform the woman about the possible effect of the vaginal cream on the Pap test and then ask her about her symptoms.
Choice C reason: Reassuring the woman that using vaginal cream is not a problem for the examination is not true, as vaginal creams can alter the pH of the vaginal environment and affect the accuracy of the Pap test. The nurse should inform the woman about the possible effect of the vaginal cream on the Pap test and explain the importance of avoiding vaginal creams, douches, or intercourse for 48 hours before the test.
Choice D reason: Informing the woman that vaginal creams may interfere with the Pap test for which she is scheduled is the best response, as it educates the woman about the purpose and procedure of the Pap test and allows her to make an informed decision about whether to reschedule or proceed with the examination. The nurse should also explain the risks and benefits of both options and respect the woman's choice.
Correct Answer is B
Explanation
Choice A reason: Intranasal spray is not a correct option, as urofollitropin is not available in this form. Intranasal spray is a method of delivering some medications through the nose, where they can be absorbed by the mucous membranes. However, urofollitropin is a protein hormone that would be degraded by the enzymes in the nasal cavity and would not reach the bloodstream effectively.
Choice B reason: Intramuscular injection is the correct option, as urofollitropin is available in this form. Intramuscular injection is a method of delivering medications into the muscle tissue, where they can be absorbed by the blood vessels. Urofollitropin is a protein hormone that needs to be injected into the body to bypass the digestive system and avoid being broken down by the stomach acids and enzymes. Urofollitropin is usually injected into the thigh or buttock muscles once a day for several days, depending on the dosage and the response².
Choice C reason: Vaginal suppository is not a correct option, as urofollitropin is not available in this form. Vaginal suppository is a method of delivering medications into the vagina, where they can be absorbed by the vaginal walls or act locally. Urofollitropin is a protein hormone that would not be absorbed well by the vaginal mucosa and would not reach the ovaries, where it is supposed to stimulate the development of the follicles (eggs).
Choice D reason: Tablet is not a correct option, as urofollitropin is not available in this form. Tablet is a method of delivering medications orally, where they can be swallowed and absorbed by the gastrointestinal tract. Urofollitropin is a protein hormone that would be destroyed by the stomach acids and enzymes and would not reach the bloodstream or the ovaries.
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