The client with respiratory failure has been intubated and placed on a ventilator and is requiring 100% oxygen delivery to maintain adequate oxygenation. Twenty-four hours later, the nurse notes new-onset crackles and decreased breath sounds, and the most recent ABGs show a PaO2 level of 95 mm Hg. The ventilator is not set to provide positive end-expiratory pressure (PEEP). Why is the nurse concerned?
A. The low PaO2 level may result in oxygen toxicity
B. The 100% oxygen delivery requirement indicates immediate extubation
C. Lung sounds may indicate absorption atelectasis
D. The level of oxygen delivery may indicate absorption atelectasis
