Correct Answer: B

Rationale: Cyanosis unresponsive to oxygen therapy suggests methemoglobinemia, an adverse effect of benzocaine spray. Methemoglobinemia can lead to death if not managed promptly. The nurse should notify the Rapid Response Team to provide immediate advanced care. Administering albuterol would not address the underlying cause of cyanosis. Assessing peripheral pulses and obtaining cultures are not the priority as they do not directly address the urgent need to manage methemoglobinemia.

Correct Answer: D

Rationale: In chronic obstructive pulmonary disease, it's important to consider the impact of nutrition on respiratory function. Eating high-fiber foods can lead to increased gas production, causing abdominal bloating and potentially worsening shortness of breath. Therefore, it is advisable for clients with COPD to avoid high-fiber foods to prevent these issues. Resting before meals can help manage dyspnea, and having smaller, more frequent meals can prevent bloating. Increasing calorie and protein intake is essential to prevent malnourishment in COPD patients. Additionally, limiting carbohydrate intake is crucial as it can increase carbon dioxide production, leading to a higher risk of acidosis in these individuals.

Correct Answer: C

Rationale: Pursed-lip breathing is a common manifestation in clients with emphysema. It helps to increase the duration of exhalation and reduce air trapping, aiding in the management of the condition. Decreased chest expansion and bradypnea are not typically associated with emphysema. While cyanosis can occur in severe cases, pursed-lip breathing is a more specific and commonly observed sign of emphysema.

Correct Answer: D

Rationale: The pulsation of the tracheostomy tube with the heartbeat may indicate a tracheoinnominate artery fistula, which can lead to life-threatening hemorrhage if the artery is breached. In this scenario, as there is no active bleeding yet, the nurse should remain with the client and have another person notify the provider immediately. If the client starts to hemorrhage, the nurse should remove the tracheostomy tube and apply pressure at the bleeding site, preparing the client for urgent surgical intervention.

Correct Answer: B

Rationale: The correct technique for pursed-lip breathing involves inhaling slowly through the nose and exhaling slowly through pursed lips. This technique helps improve expiration and reduce air trapping. Breathing in quickly, holding the breath, or breathing in and out through pursed lips does not align with the correct method of pursed-lip breathing.