Which finding meets the criteria of a reassuring fetal heart rate (FHR) pattern?

Variability averages between 6 and 10 beats/min.

Mild late deceleration patterns occur with some contractions.

FHR does not change as a result of fetal activity.

Average baseline rate ranges between 100 and 140 beats/min.

Answer and Explanation

The Correct Answer is A

Choice A reason: Variability refers to the fluctuations in the FHR that are irregular in amplitude and frequency. It reflects the balance between the sympathetic and parasympathetic nervous systems of the fetus. A normal variability is between 6 and 10 beats/min, which indicates a healthy and well-oxygenated fetus.

Choice B reason: Late decelerations are decreases in the FHR that begin after the peak of a contraction and return to the baseline after the contraction ends. They are caused by uteroplacental insufficiency, which means that the placenta is not delivering enough oxygen and nutrients to the fetus. Mild late decelerations are not reassuring and may indicate fetal hypoxia or acidosis².

Choice C reason: FHR should change as a result of fetal activity, such as movement, sleep, or stimulation. A change in the FHR indicates a responsive and well-oxygenated fetus. A lack of change in the FHR may indicate fetal distress or compromise.

Choice D reason: The average baseline rate is the mean FHR rounded to increments of 5 beats/min during a 10-minute window, excluding periods of marked variability, accelerations, or decelerations. A normal baseline rate is between 110 and 160 beats/min. A baseline rate between 100 and 140 beats/min is not necessarily abnormal, but it may indicate fetal bradycardia (slow heart rate) or tachycardia (fast heart rate), depending on the gestational age and other factors.

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Correct Answer is D

Explanation

Choice A reason: Limiting fluid intake throughout the day is not recommended, as dehydration can worsen nausea and vomiting. Instead, pregnant women should sip fluids gradually throughout the day to maintain hydration. Proper hydration supports digestion and helps prevent complications like electrolyte imbalances. Clinical guidelines emphasize the importance of maintaining adequate fluid intake during pregnancy

Choice B reason: Drinking a glass of water with a fat-free carbohydrate before getting out of bed in the morning is a good strategy to prevent nausea and vomiting, as it can stabilize the blood sugar level and prevent an empty stomach. However, it is not the best answer, as it does not address the dietary needs throughout the day.

Choice C reason: Increasing the intake of high-fat foods is not recommended, as it can worsen nausea and vomiting. High-fat foods are harder to digest and can cause gastric irritation and reflux. The pregnant woman should choose low-fat, bland, and easy-to-digest foods.

Choice D reason: Eating small, frequent meals every 2 to 3 hours is the best approach to managing nausea and vomiting during pregnancy. This strategy helps stabilize blood sugar levels and prevents the stomach from becoming too empty or too full, both of which can trigger nausea. Clinical guidelines widely support this dietary adjustment as a primary intervention for nausea and vomiting in pregnancy

A. Biophysical profile B. Lecithin/sphingomyelin [L/S] ratio C. Type and crossmatch of maternal and fetal serum D. Multiple-marker screening

Correct Answer is D

Explanation

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.

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Which finding meets the criteria of a reassuring fetal heart rate (FHR) pattern?

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Naxlex Comprehensive Predictor Exams

A pregnant woman experiencing nausea and vomiting should:

Correct Answer is D

Explanation

Which analysis of maternal serum may predict chromosomal abnormalities in the fetus?

Correct Answer is D

Explanation

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