Compared with contraction stress test (CST), nonstress test (NST) for antepartum fetal assessment:

has no known contraindications.

is slightly more expensive.

has fewer false-positive results.

is more sensitive in detecting fetal compromise.

Answer and Explanation

The Correct Answer is A

Choice A reason: The NST has no known contraindications, as it is a non-invasive and safe test that does not stimulate uterine contractions or cause fetal distress. It is the most widely used method of antepartum fetal surveillance.

Choice B reason: The NST is not slightly more expensive than the CST, as it requires less time and equipment. The NST usually takes 20 to 40 minutes, while the CST may take up to 2 hours. The NST only needs a fetal monitor, while the CST also needs an intravenous line and oxytocin infusion.

Choice C reason: The NST does not have fewer false-positive results than the CST, as it has a higher rate of nonreactive results that may indicate fetal compromise when there is none. A nonreactive NST is one that does not show at least two accelerations of the fetal heart rate of 15 beats per minute or more lasting 15 seconds or more in a 20-minute period.

Choice D reason: The NST is not more sensitive in detecting fetal compromise than the CST, as it has a lower predictive value for fetal well-being. A reactive NST is one that shows at least two accelerations of the fetal heart rate of 15 beats per minute or more lasting 15 seconds or more in a 20-minute period. However, a reactive NST does not rule out the possibility of fetal hypoxia or acidosis.

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Correct Answer is D

Explanation

Choice A reason: A blood pressure increase to 138/86 mm Hg is not a concerning finding for preeclampsia. The diagnostic criteria for preeclampsia include a BP of 140/90 mm Hg or higher on two occasions at least 4 hours apart, or a BP of 160/110 mm Hg or higher on one occasion.

Choice B reason: Pitting pedal edema at the end of the day is not a concerning finding for preeclampsia. Edema is a common symptom of pregnancy and can be influenced by factors such as hydration, activity, and posture. Edema is not a reliable indicator of preeclampsia.

Choice C reason: Weight gain of 0.5 kg during the past 2 weeks is not a concerning finding for preeclampsia. The recommended weight gain for a normal-weight woman during pregnancy is 11.5 to 16 kg, with an average of 0.4 kg per week in the second and third trimesters.

Choice D reason: A dipstick value of 3+ for protein in her urine is a concerning finding for preeclampsia. Proteinuria is one of the hallmark signs of preeclampsia and indicates renal impairment. A dipstick value of 3+ corresponds to a protein concentration of 300 mg/dL or higher, which is considered severe.

A. Braxton Hicks contractions. B. fetal movement palpated by the nurse-midwife. C. a positive pregnancy test. D. quickening.

Correct Answer is B

Explanation

Choice A reason: Braxton Hicks contractions are irregular, painless uterine contractions that occur throughout pregnancy. They are a probable sign of pregnancy, not a positive sign.

Choice B reason: Fetal movement palpated by the nurse-midwife is a positive sign of pregnancy, as it confirms the presence of a living fetus in the uterus. It can be detected as early as 16 to 20 weeks of gestation.

Choice C reason: A positive pregnancy test is a probable sign of pregnancy, as it indicates the presence of human chorionic gonadotropin (hCG) in the urine or blood. However, it is not a definitive sign, as other conditions can cause elevated hCG levels.

Choice D reason: Quickening is the first perception of fetal movement by the mother, which usually occurs between 16 and 20 weeks of gestation. It is a presumptive sign of pregnancy, not a positive sign.

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Compared with contraction stress test (CST), nonstress test (NST) for antepartum fetal assessment:

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Naxlex Comprehensive Predictor Exams

A primigravida is being monitored in her prenatal clinic for preeclampsia. What finding should concern her nurse?

Correct Answer is D

Explanation

The nurse teaches a pregnant woman about the presumptive, probable, and positive signs of pregnancy. The woman demonstrates understanding of the nurse's instructions if she states that a positive sign of pregnancy is:

Correct Answer is B

Explanation

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