Nursing Elites

1. 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?

• A. One portion of the intestines invaginates or telescopes into another
• B. Hypertrophy of the circular pylorus muscle
• C. Relaxed cardiac sphincter
• D. Absent ganglion cells in the colon

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.

2. At which age do most infants begin to fear strangers?

• A. 2 months
• B. 4 months
• C. 6 months
• D. 12 months

Correct answer: C

Rationale: Fear of strangers typically begins around 6 months as infants start recognizing familiar and unfamiliar faces, which is part of their social development.

3. What is the most effective method to prevent infection in the newborn?

• A. Using disposable items
• B. Practicing proper hand hygiene by staff and family
• C. Administering prophylactic antibiotics
• D. Isolating the newborn from others

Correct answer: B

Rationale: The most effective method to prevent infection in newborns is by practicing proper hand hygiene by staff and family. This is crucial as it helps reduce the transmission of infectious agents, protecting vulnerable newborns. Using disposable items may help, but proper hand hygiene is more effective. Administering prophylactic antibiotics without a specific indication can lead to antibiotic resistance and is not recommended. Isolating the newborn from others is not practical and may not be necessary if proper hand hygiene is maintained.

4. Pertussis vaccination should begin at which age?

• A. Birth
• B. 2 months
• C. 6 months
• D. 12 months

Correct answer: B

Rationale: The DTaP vaccine, which includes pertussis, is typically started at 2 months of age as part of the recommended immunization schedule.

5. The nurse is performing an assessment on a 12-month-old infant. Which fine or gross motor developmental skill demonstrates the proximodistal acquisition of skills?

• A. Standing
• B. Sitting without assistance
• C. Fully developed pincer grasp
• D. Taking a few steps holding onto something

Correct answer: C

Rationale: The development of a pincer grasp reflects fine motor skills, which develop in a proximodistal pattern (from the center of the body outward).

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