Correct Answer: C

Rationale: The correct answer is C. Needing assistance to climb stairs is considered expected behavior for an 18-month-old toddler. At this age, children are still developing their gross motor skills, coordination, and balance, which can vary in proficiency. It is common for toddlers to be able to crawl upstairs before mastering the skill of climbing stairs upright. Options A, B, and D are incorrect because at 18 months, it is normal for children to require help and practice with climbing stairs and does not necessarily point to any specific medical conditions or developmental issues.

Correct Answer: C

Rationale: Low-set ears with lobe creases are often associated with genetic disorders, such as Down syndrome, and can indicate underlying chromosomal abnormalities. This physical characteristic is a common feature seen in various genetic syndromes. The other choices, including feeding problems, weight and height measurements, and motor skills, are not typically specific indicators of genetic disorders in the absence of other associated features.

Correct Answer: B

Rationale: During a vaso-occlusive crisis in sickle cell anemia, the priority nursing intervention is administering pain medication to alleviate the severe pain associated with the crisis. While administering oxygen can help improve oxygenation, pain relief is crucial in managing the crisis. Monitoring fluid intake is important in sickle cell anemia but is not the most immediate intervention during a vaso-occlusive crisis. Encouraging physical activity is contraindicated during a vaso-occlusive crisis as it can exacerbate pain and complications.

Correct Answer: B

Rationale: Correct! When a child is being discharged after treatment for dehydration, it is important to educate caregivers about monitoring for signs of dehydration to prevent reoccurrence. Dehydration is the primary concern in this scenario, as the child's fluid levels need to be closely monitored. Choices A, C, and D are incorrect because while infection, hypovolemia, and malnutrition are also important considerations in pediatric care, the immediate focus after treating dehydration should be on preventing its recurrence by monitoring for signs of dehydration.

Correct Answer: C

Rationale: The correct answer is to place a tracheotomy set at the bedside. Acute laryngotracheobronchitis can cause airway obstruction, which may require an emergency tracheotomy. Having the tracheotomy set readily available ensures quick access in case of respiratory distress. Padding the side rails of the crib, arranging for a quiet, cool room, and obtaining a recliner for a parent are important aspects of care but are not the priority when managing a potentially life-threatening airway emergency.