A client with acute respiratory distress syndrome (ARDS) requires high levels of positive end-expiratory pressure (PEEP). Which oxygen delivery system would be most effective in providing the necessary PEEP?

Answer: d. CPAP mask

Explanation: A CPAP mask is the most appropriate oxygen delivery system for a client with sleep apnea who requires positive pressure ventilation. It delivers a continuous flow of air or oxygen at a constant pressure to keep the airway open during sleep.

Incorrect choices:

a. Nasal cannula does not provide positive pressure ventilation and is not suitable for addressing sleep apnea.

b. Venturi mask and c. Non-rebreather mask are not designed to deliver positive pressure ventilation and are not commonly used for sleep apnea management.

Answer: c. High-flow nasal cannula

Explanation: High-flow nasal cannula delivers a high flow rate of humidified oxygen and provides consistent oxygenation while reducing the work of breathing. It is effective in improving oxygenation in clients with pneumonia.

Incorrect choices: a. Simple face mask does not provide precise oxygen concentrations and may not be as effective in improving oxygenation as other options.

b. Partial rebreather mask is not typically used in pneumonia management as it may impede effective coughing and clearance of secretions.

d. Transtracheal catheter is a more invasive oxygen delivery method and is not commonly used in pneumonia management.