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: Administering a bronchodilator is the initial priority as it helps open the child's airways, reducing the wheezing and shortness of breath. This intervention aims to provide immediate relief and improve the child's respiratory distress.

Correct Answer: B

Rationale: Notifying the healthcare provider is crucial when an infant scheduled for intussusception reduction passes a soft-formed brown stool as it may indicate spontaneous reduction of the intussusception. The healthcare provider needs to be informed to assess if the procedure is still necessary or if further evaluation is required.

Correct Answer: A

Rationale: In a child presenting with ear pain and fever, asking if the child has had a runny nose is crucial in assessing for possible ear infection causes. Respiratory infections can lead to secondary ear infections, so exploring symptoms related to upper respiratory tract infections, like a runny nose, can help in the evaluation and management of the child's condition.

Correct Answer: C

Rationale: Co-sleeping, or keeping the baby in the parents' bed, increases the risk of sudden infant death syndrome (SIDS). It is crucial for parents to place the baby in a separate crib or bassinet to ensure a safe sleep environment and reduce the risk of SIDS.