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Ambiguous terms used to define exacerbations of chronic obstructive pulmonary disease
| Ambiguity | |
|---|---|
| Sustained | What duration of symptoms defines “sustained”? |
| Worsening | Which components of disease are getting worse? |
| Beyond | Occurring after how much time? |
| Acute | How quickly does a symptom have to emerge to be judged “acute”? |
| Might warrant | Does it require or not require treatment? |
