What is consistent with the radiographic appearance after prolonged exposure to O2?

Prolonged exposure to oxygen, particularly at high concentrations, can lead to the development of patchy infiltrates in the lungs. This condition occurs due to oxygen toxicity, which can damage lung tissues and lead to inflammatory responses. The resultant infiltrates can appear as irregular, patchy areas on radiographic images, reflecting the alveolar damage and inflammation occurring within the lung parenchyma.

The other options do not accurately represent the expected radiographic findings after prolonged oxygen exposure. Clear lung fields would suggest that there is no significant pathology present, which is not typical following extended oxygen therapy. Consolidation hints at a solidification of lung tissue due to pneumonia or other factors, while interstitial edema refers to fluid buildup between the lung's alveoli and capillaries, which is also not a standard outcome of oxygen exposure alone. Thus, patchy infiltrates are an expectation associated with lung injury related to excessive oxygen levels.