Which statement about fetal circulation is true?
Fetal circulation is no longer effective at birth.
Fetal circulation continues until red blood cells are broken down.
Fetal circulation continues until after the stress of labor.
Fetal circulation continues until adulthood.
The Correct Answer is C
Fetal circulation continues until after the stress of labor.
Choice A rationale:
Fetal circulation undergoes significant changes at birth. It becomes ineffective as the transition from intrauterine to extrauterine life occurs. The foramen ovale and ductus arteriosus, which allow blood to bypass certain fetal circulatory pathways, close as the baby breathes for the first time.
Choice B rationale:
Fetal circulation does not continue until red blood cells are broken down. Red blood cells in a fetus have a shorter lifespan than those in adults and are continually replaced throughout gestation. However, their breakdown is not the reason for the changes in fetal circulation.
Choice C rationale:
The correct answer. Fetal circulation continues until after the stress of labor. During labor, the baby experiences increased stress and pressure, which helps trigger various physiological changes, including the closure of specific fetal circulatory shunts.
Choice D rationale:
Fetal circulation does not continue until adulthood. As mentioned earlier, the transition from fetal to adult circulation occurs during and after birth, with the closure of specific fetal shunts and the establishment of a fully functional adult circulatory system.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale:
Applying crushed cabbage leaves to the breasts can be a traditional remedy to help reduce swelling and discomfort associated with engorgement.
Choice B rationale:
Wearing a snug-fitting bra can help provide support to the breasts and reduce discomfort from breast engorgement. It can also help to avoid stimulation of the breasts, which can decrease milk production in a client who is not breastfeeding. This is an appropriate comfort measure for the client.
Choice C rationale:
Stimulating the nipples by squeezing softly can lead to increased milk production and exacerbate breast engorgement. For a client who is not breastfeeding, this action is not recommended and may worsen the engorgement.
Choice D rationale:
Applying ice packs to the breasts can help reduce inflammation and alleviate discomfort from breast engorgement. This is an appropriate comfort measure for the client who is not breastfeeding.
Correct Answer is D
Explanation
Choice A rationale:
Notifying the provider immediately may be an appropriate action in certain urgent situations. However, for a newborn who has not voided for the first time yet, it is not an immediate emergency. The priority is to assess the newborn's condition further before notifying the provider.
Choice B rationale:
Pressing on the bladder to prevent urine retention is not a recommended action. Applying pressure on the newborn's bladder can be harmful and is not a standard nursing practice.
Choice C rationale:
Administering IV fluid is not the priority action for a newborn who has not voided. Newborns usually receive sufficient hydration from breastfeeding or formula feeding, and administering IV fluid without proper indication can lead to potential complications.
Choice D rationale:
Documenting and continuing monitoring is the correct priority action in this situation. Newborns often take some time to pass their first urine, and it is considered normal for them to have delayed voiding within the first 24 hours after birth. The nurse should document the absence of voiding and monitor the newborn for any signs of distress or abnormalities. If the newborn's condition worsens or if there are other concerning symptoms, then notifying the provider may be necessary.
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