A 38-year-old man who sustained a lung contusion 24 hours ago presents with dyspnea, tachypnea, and anxiety. Progressive respiratory distress develops, though oxygen has been administered. Based on these findings, it is most likely that the patient is diagnosed with:

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Acute respiratory distress syndrome is a noncardiac pulmonary edema and progressive refractory hypoxemia, where hypoxemia does not improve with oxygen administration. It usually occurs 24 to 48 hours after the initial insult.

A 38-Year-Old Man Who Sustained a Lung Contusion 24 Hours