what is the most critical physiologic change required of newborns at birth
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Nursing Elites

ATI RN

RN Nursing Care of Children Online Practice 2019 A

1. What is the most critical physiologic change required of newborns at birth?

Correct answer: A

Rationale: The correct answer is A: Transition from fetal to neonatal breathing. The onset of breathing is the most immediate and critical physiologic change required for the transition to extrauterine life. Factors that interfere with this normal transition increase fetal asphyxia, which is a condition of hypoxemia, hypercapnia, and acidosis. While body temperature maintenance, stabilization of fluid and electrolytes, and closure of fetal shunts in the heart are crucial changes in the transition to extrauterine life, breathing and the exchange of oxygen for carbon dioxide must take precedence as they are essential for newborn survival.

2. What is the number one leading cause of death in children over 1 year of age?

Correct answer: D

Rationale: Accidents, such as motor vehicle accidents, drowning, and falls, are the primary cause of death in children over 1 year of age. While congenital anomalies can be a significant cause of mortality in infants, they are less common in older children. Homicide and suicide are serious issues but are not as prevalent as accidents in causing death among children over 1 year of age.

3. What statement best describes Hirschsprung disease?

Correct answer: A

Rationale: Hirschsprung disease is characterized by the absence of ganglion cells in a segment of the colon, leading to a lack of peristalsis and obstruction. The other options do not accurately describe this condition.

4. Parents would suspect hearing loss if their child did not:

Correct answer: D

Rationale: The correct answer is D because babbling is an early indicator of hearing ability in infants. Lack of babbling by 2 months may suggest a potential hearing issue. Choices A, B, and C are incorrect because turning away from a sound, startling with sudden loud noises immediately after birth, and talking at 4 months are not primary indicators of hearing loss in infants.

5. When assessing an infant with intussusception, what type of stool would the nurse expect to find?

Correct answer: B

Rationale: The correct answer is B: Currant-jelly stool. This type of stool, which is red and mucous-like, is a classic sign of intussusception in infants. Choice A (Soft, seedy stool) is incorrect as it does not specifically describe the characteristic stool associated with intussusception. Choice C (Ribbon-like stool) is incorrect; ribbon-like stool may be seen in conditions like colon cancer, not intussusception. Choice D (Soft and pasty stool) is also incorrect as it does not match the typical stool finding in intussusception.

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