After having an ultrasound, the fetus' heart shows that "normal fetal circulation is occurring.”. The RN is teaching a pregnant client about normal fetal circulation.Which of the following statements is consistent with the finding?

Blood is returning to the right atrium from the pulmonary system.

Blood is returning to the placenta via the umbilical arteries.

Blood is being shunted to the right side from the left side of the heart.

A right to left shunt is seen between the umbilical arteries.

Answer and Explanation

The Correct Answer is B

Choice A rationale

Blood returning to the right atrium from the pulmonary system is consistent with adult circulation, not fetal circulation. In fetal circulation, blood bypasses the lungs via the ductus arteriosus and foramen ovale since the fetus receives oxygenated blood from the placenta, not the lungs.

Choice B rationale

Blood is returning to the placenta via the umbilical arteries. In fetal circulation, deoxygenated blood is carried from the fetus to the placenta through the umbilical arteries. This is consistent with normal fetal circulation as the placenta is responsible for gas exchange.

Choice C rationale

Blood being shunted to the right side from the left side of the heart is incorrect. In fetal circulation, there is a right-to-left shunt through the foramen ovale, allowing blood to bypass the non-functioning fetal lungs and go directly into systemic circulation.

Choice D rationale

A right-to-left shunt is not seen between the umbilical arteries. Instead, the shunts in fetal circulation are the ductus venosus, ductus arteriosus, and foramen ovale, which help reroute blood away from the fetal lungs and liver.

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Correct Answer is D

Explanation

Choice A rationale

The fetal heartbeat can be heard with a Doppler at the fourth week of gestation is incorrect. At this early stage, the embryonic heart has only just begun to form, and its activity cannot be detected by Doppler.

Choice B rationale

The fetal heartbeat can be heard with a Doppler at the sixth week of gestation is incorrect. Although the heart begins to beat around this time, it is usually too faint to be detected by Doppler.

Choice C rationale

The fetal heartbeat can be heard with a Doppler at the seventh week of gestation is incorrect. It remains challenging to detect the fetal heartbeat this early with standard Doppler equipment.

Choice D rationale

The fetal heartbeat can be heard with a Doppler at the twelfth week of gestation is correct. By the end of the first trimester, the fetal heart is sufficiently developed and strong enough to be detected using Doppler ultrasound, allowing healthcare providers to monitor fetal well-being.

A. Basal body temperature drops slightly for 24-48 hours. B. Luteinizing hormone increases immediately after. C. Vaginal acidity decreases. D. Libido rises at this time.

Correct Answer is ["A","B","D"]

Explanation

Choice A rationale

Basal body temperature drops slightly for 24-48 hours before ovulation, indicating the most fertile period.

Choice B rationale

Luteinizing hormone surges just before ovulation, triggering the release of an egg from the ovary.

Choice C rationale

Vaginal acidity does not significantly decrease during ovulation; it remains relatively constant.

Choice D rationale

Libido often rises during ovulation due to hormonal changes, which can increase the chances of conception.

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After having an ultrasound, the fetus' heart shows that "normal fetal circulation is occurring.”. The RN is teaching a pregnant client about normal fetal circulation.Which of the following statements is consistent with the finding?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

At her first prenatal visit, a woman and the nurse are discussing fetal development.The client asks, "When will we be able to hear the baby's heartbeat?" The nurse should reply, The fetal heartbeat can be heard with a Doppler at:

Correct Answer is D

Explanation

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Correct Answer is ["A","B","D"]

Explanation

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