Correct Answer: C

Rationale: The correct response is to assure the mother that she is using the medication correctly. Albuterol is a beta-adrenergic agonist that helps open the airways during an asthma attack. By reassuring the mother, the nurse reinforces the correct usage of the medication, which is crucial in managing the child's asthma symptoms effectively.

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.

Correct Answer: A

Rationale: Children, especially young ones, benefit from knowing what position they will be in during a procedure as it helps them understand and feel more in control. Describing the side-lying, knees-to-chest position can reduce anxiety and promote cooperation during the lumbar puncture.

Correct Answer: C

Rationale: In this scenario, the child is hyperventilating, which leads to excessive loss of carbon dioxide. This loss of carbon dioxide causes respiratory alkalosis due to a decrease in the partial pressure of carbon dioxide in the blood. Therefore, the correct answer is respiratory alkalosis.

Correct Answer: B

Rationale: In a sickle cell crisis, pain management is a priority to alleviate the child's suffering. Administering the prescribed pain medication is crucial to address the severe pain experienced by the child. Warm compresses, fluid intake, and oxygen saturation monitoring are important interventions but should follow the priority of pain management in this situation.