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.

Answer and Explanation

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.

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Correct Answer is C

Explanation

Choice A rationale:

Iron is crucial for the development of hemoglobin, which carries oxygen to all parts of the body, including the bones, but it does not directly facilitate bone growth.

Choice B rationale:

While newborns do metabolize iron, their iron stores are limited, and breast milk alone may not meet their iron needs.

Choice C rationale:

When educating a parent about the use of iron-fortified formula for their newborn, it is essential to convey that newborns have a limited store of iron, which begins to deplete around the age of 6 months.

Choice D rationale:

Iron facilitating eyesight development is not a relevant aspect to consider when discussing the use of iron-fortified formula for a newborn. While iron is essential for various physiological functions, it is not specifically linked to eyesight development.

A. The newborn with significant bruising from a face presentation. B. The premature newborn. C. The baby born at 41 weeks' gestation. D. The newborn with O+ blood type, born to a mother with O- blood type.

Correct Answer is C

Explanation

Choice A rationale:

(Incorrect) The newborn with significant bruising from a face presentation is at an increased risk of elevated unconjugated bilirubin levels. Bruising can lead to the breakdown of red blood cells, increasing bilirubin production.

Choice B rationale:

(Incorrect) The premature newborn is at a higher risk of elevated unconjugated bilirubin levels. Premature infants often have an underdeveloped liver, which can lead to reduced bilirubin processing and clearance.

Choice C rationale:

(Correct) The baby born at 41 weeks' gestation is at the lowest risk for elevated unconjugated bilirubin levels. By this stage, the baby's liver is more mature, allowing for efficient processing and clearance of bilirubin.

Choice D rationale:

(Incorrect) The newborn with O+ blood type, born to a mother with O- blood type, is at an increased risk of elevated unconjugated bilirubin levels if the baby's blood type is Rh-positive and the mother's is Rh-negative. This situation can lead to Rh incompatibility and hemolytic disease of the newborn, causing higher bilirubin levels.

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Which statement about fetal circulation is true?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is reinforcing teaching with a parent about using an iron-fortified formula to feed her newborn. Which of the following information should the nurse include in the teaching?

Correct Answer is C

Explanation

Which newborn is at the lowest risk for elevated unconjugated bilirubin levels?

Correct Answer is C

Explanation

A nurse is collecting data from a newborn and notes a swollen area on the head that does not cross the suture line. The nurse should document this finding as which of the following?

A nurse is collecting data about reflexes from a newborn. Which of the following actions should the nurse take to elicit the newborn's Moro reflex?

A nurse is reinforcing teaching with a client who is postpartum about bathing her newborn. Which of the following statements by the client indicates a need for further teaching?

A nurse is reinforcing teaching with a parent about using an iron-fortified formula to feed her newborn. Which of the following information should the nurse include in the teaching?

A nurse is caring for a newborn who is at 34 weeks of gestation, weighs 1,550 g, and has nasal flaring, intercostal retractions, expiratory grunting, and mild cyanosis. The nurse should place the newborn in an incubator for which of the following reasons?

The nurse notes that a newborn's white blood cell count (WBC) is 15,000. The nurse is aware that:.

Exhibit 1. The names of the newborn reflexes are? Select all that apply.

A nurse is collecting data from a newborn 1 hr after delivery. Which of the following respiratory rates is within the expected reference range for a newborn?