A nurse is caring for a primigravida who asks about the function of the placenta.Which of the following are functions of the placenta?

Provides thermoregulation.

Cushions fetus from maternal movement.

Metabolic and gas exchange.

Provides a sterile environment.

Answer and Explanation

The Correct Answer is C

Choice A rationale

The placenta does not provide thermoregulation; that function is managed by maternal thermoregulation and the amniotic fluid which insulates the fetus.

Choice B rationale

Amniotic fluid cushions the fetus from maternal movements, not the placenta. The placenta's role is more focused on nutrient and waste exchange.

Choice C rationale

The placenta facilitates metabolic functions and gas exchange, supplying oxygen and nutrients to the fetus while removing carbon dioxide and waste products, ensuring fetal development.

Choice D rationale

The placenta doesn't provide a sterile environment. This is accomplished by the amniotic sac and amniotic fluid. The placenta connects the fetus to maternal blood supply, ensuring necessary exchanges for fetal growth.

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Correct Answer is C

Explanation

Choice A rationale

A maternal blood pressure of 128/88 mm Hg is within normal limits for a pregnant woman. Regular monitoring is necessary, but no immediate follow-up is required unless symptoms of preeclampsia appear.

Choice B rationale

A fetal heart rate baseline of 115 bpm is within the normal range (110-160 bpm). This does not require immediate follow-up and is a reassuring sign of fetal well-being.

Choice C rationale

A maternal heart rate of 128 bpm is elevated (tachycardia) and may indicate distress, infection, dehydration, or other underlying conditions. This requires immediate follow-up to identify and address the cause.

Choice D rationale

A maternal respiratory rate of 18 breaths per minute is within the normal range (12-20 breaths per minute) and does not require immediate follow-up.

A. Uteroplacental insufficiency. B. Umbilical cord compression. C. Maternal bradycardia. D. Fetal head compression.

Correct Answer is B

Explanation

Choice A rationale

Uteroplacental insufficiency typically results in late decelerations, not a sudden drop in fetal heart rate, which is more commonly caused by umbilical cord compression.

Choice B rationale

Umbilical cord compression can cause variable decelerations, which are characterized by a sudden drop in fetal heart rate. This occurs due to the umbilical cord being compressed, leading to decreased blood flow and oxygen to the fetus.

Choice C rationale

Maternal bradycardia refers to a slow maternal heart rate and does not directly cause changes in the fetal heart rate pattern.

Choice D rationale

Fetal head compression typically causes early decelerations, which are gradual decreases in fetal heart rate that occur with contractions and are usually benign.

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A nurse is caring for a primigravida who asks about the function of the placenta.Which of the following are functions of the placenta?

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Naxlex Comprehensive Predictor Exams

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