Correct Answer: A

Rationale: In a 7-year-old child with an acute asthma exacerbation showing signs of wheezing and increased work of breathing, the priority intervention for the nurse is to administer a nebulized bronchodilator immediately. Bronchodilators help dilate the airways, relieve bronchospasm, and improve breathing, which is crucial in managing an acute asthma attack and preventing further respiratory distress.

Correct Answer: D

Rationale: The priority action for the nurse is to review the immunization documentation of the child with HIV to ensure they have received the necessary vaccines. This step is crucial in protecting the child's health and preventing further complications from vaccine-preventable diseases like pertussis. It is important to verify the child's immunization status before considering other interventions.

Correct Answer: D

Rationale: Flaring of the nares is a classic sign of acute respiratory distress in infants. It indicates increased work of breathing and is a visible cue that the child is struggling to breathe. This finding should alert healthcare providers to the severity of the respiratory distress and the need for prompt intervention to support the child's breathing.

Correct Answer: D

Rationale: In this scenario, the child is hospitalized with pneumonia, receiving IV antibiotics and oxygen therapy. With a high respiratory rate and decreased oxygen saturation, auscultating the child's lung sounds is the priority action. This assessment can provide crucial information about the child's respiratory status, such as the presence of adventitious sounds or decreased air entry, which can guide further interventions and help in evaluating the effectiveness of the current treatments.

Correct Answer: C

Rationale: In a situation where an infant with tetralogy of Fallot is acutely cyanotic and hyperpneic, the priority action should be to place the infant in a knee-chest position. This position helps increase systemic vascular resistance, improving pulmonary blood flow and subsequently ameliorating the cyanosis and hyperpnea. It is a non-invasive and effective intervention that can be promptly implemented by the nurse to address the immediate respiratory distress.