Correct Answer: A

Rationale: The primary goal of therapy during the acute phase of Kawasaki disease is to prevent coronary artery aneurysms. Kawasaki disease is characterized by systemic vasculitis and the most serious complication is the development of coronary artery aneurysms. While reducing fever and improving cardiac function are important aspects of managing Kawasaki disease, the primary focus in the acute phase is to prevent the development of coronary artery aneurysms. Preventing dehydration is also essential but not the primary goal in managing Kawasaki disease.

Correct Answer: A

Rationale: In this scenario, the infant is presenting with signs of respiratory distress, as evidenced by the increased work of breathing. Lowering the extremities can help reduce the workload on the diaphragm and improve respiratory mechanics. This action can be beneficial in optimizing the infant's breathing before considering more invasive interventions. Option B, initiating positive pressure ventilations, should be considered if the infant's condition deteriorates further and not as the first step. Option C, placing a nasopharyngeal airway and increasing oxygen flow, is not indicated as the primary intervention for increased work of breathing. Option D, listening to the lungs with a stethoscope, may provide additional information but is not the most urgent action needed in this situation.

Correct Answer: B

Rationale: The priority nursing intervention for a child with bronchiolitis is providing respiratory therapy. This intervention aims to maintain airway patency, optimize oxygenation, and support effective breathing. Administering bronchodilators, though important, may not be the initial priority as respiratory therapy takes precedence in ensuring adequate oxygenation and ventilation. Monitoring oxygen saturation is crucial but is usually part of the ongoing assessment following the initiation of respiratory therapy. Encouraging fluid intake is essential for hydration but is not the priority intervention when addressing the respiratory distress associated with bronchiolitis.

Correct Answer: A

Rationale: The priority nursing diagnosis for a 3-day-old girl with Down syndrome, whose mother had no prenatal care, is imbalanced nutrition, less than body requirements related to the effects of hypotonia. Newborns with Down syndrome often experience feeding difficulties due to hypotonia, which can lead to inadequate nutrition intake. Option B is incorrect because at this age, the infant is not capable of having knowledge deficits related to a genetic disorder. Option C is incorrect as delayed growth and development are not the immediate priority in this scenario. Option D is incorrect as impaired physical mobility is not typically a priority concern for a newborn with Down syndrome.

Correct Answer: D

Rationale: In a 3-year-old child presenting with sudden respiratory distress and no history of recent illnesses or fever, foreign body airway obstruction should be suspected. Foreign body airway obstruction commonly leads to acute respiratory distress without preceding symptoms. Croup (Choice A) typically presents with a barking cough and stridor. Epiglottitis (Choice B) often presents with high fever, drooling, and a muffled voice. Lower respiratory infection (Choice C) may manifest with symptoms such as cough, fever, and respiratory distress, but the sudden onset without fever or recent illness suggests a more acute event like foreign body airway obstruction.