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Criteria for acute exacerbation of IPF. 88
| Acute respiratory deterioration of typically <1 month duration in someone with IPF |
| Extra‐parenchymal cause excluded (e.g., pneumothorax, pleural effusion, pulmonary embolism) |
| New, bilateral ground glass opacity and/or consolidation on CT |
| Not explained by congestive cardiac failure of fluid overload |
Abbreviations: CT, computed tomography; IPF, idiopathic pulmonary fibrosis.
