which reflex is expected to disappear by 4 months of age
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Nursing Elites

ATI RN

ATI Nursing Care of Children 2019 B

1. Which reflex is expected to disappear by 4 months of age?

Correct answer: B

Rationale: The Moro reflex, also known as the startle reflex, typically disappears by 4 months as the infant's nervous system matures. This reflex is important for assessing the development of the nervous system in newborns. The Rooting reflex (Choice A) is related to turning the head in response to cheek stimulation; the Babinski reflex (Choice C) involves the fanning of toes in response to foot stimulation; and the Palmar grasp (Choice D) is the curling of the fingers around an object placed in the infant's hand. These reflexes have different timelines for disappearance and are not typically expected to be gone by 4 months of age.

2. The nurse is taking a health history of an adolescent. Which best describes how the chief complaint should be determined?

Correct answer: B

Rationale: Asking the adolescent directly about the reason for their visit encourages open communication and helps the nurse understand the primary concern from the patient's perspective.

3. The charge nurse in the pediatric unit is teaching nursing students about pyloric stenosis. A student asks what causes pyloric stenosis. How should the nurse respond?

Correct answer: B

Rationale: Pyloric stenosis is caused by the hypertrophy (thickening) of the circular muscle of the pylorus, leading to obstruction. Choice A is incorrect as it describes intussusception, not pyloric stenosis. Choice C is incorrect as a relaxed cardiac sphincter is related to gastroesophageal reflux. Choice D is incorrect as it describes Hirschsprung's disease, not pyloric stenosis.

4. The school nurse understands that children are impacted by divorce. Which has the most impact on the positive outcome of a divorce?

Correct answer: D

Rationale: The level of ongoing family conflict is the most significant factor influencing the positive or negative outcomes for children during and after a divorce

5. The parents of a 2-year-old boy who had a repair of exstrophy of the bladder at birth ask when they can begin toilet training their son. The nurse replies based on what knowledge?

Correct answer: B

Rationale: Toilet training should begin when the child has sufficient bladder capacity and control, which may be delayed in children who have undergone surgical repairs for conditions like bladder exstrophy. Premature training can lead to frustration and setbacks.

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