A nurse is assisting with the care of a client in a PACU. Exhibits Which of the following actions should the nurse take during the management of oxygenation for this client? Select all that apply.

Rationale: • Examine the client's nail beds: Assessing nail beds for cyanosis provides visual clues of hypoxia. This is a noninvasive, rapid method to evaluate tissue perfusion and oxygenation. The client's saturations are borderline low despite increasing oxygen. • Place the client in the supine position: The supine position can reduce lung expansion and worsen hypoxia, especially after sedation. Elevating the head of the bed promotes lung expansion and better diaphragmatic movement. • Encourage client to perform deep breathing exercises: Deep breathing helps expand alveoli and improves oxygen exchange. It may reduce the need for higher oxygen delivery if the hypoxia is due to shallow respirations after sedation. • Prepare to administer oxygen via Venturi face mask: The client's O₂ saturation is dropping despite nasal cannula at 5 L/min. A Venturi mask delivers a more precise and consistent oxygen concentration, making it appropriate here. • Add a humidifier to the oxygen device: Humidification is generally needed for oxygen above 4 L/min over long durations. This client has only been on oxygen for a short time post-procedure, so humidification is not urgently required.