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. 2015 Jun 25;148(4):1034–1042. doi: 10.1378/chest.14-2889

TABLE 4 ] .

Evaluation of Suspected Acute Exacerbations

Decision Reason
Definite acute exacerbation All criteria met, no alternative etiology
Unclassifiable acute worsening Insufficient data to evaluate all criteria, no alternative etiology
Not acute exacerbation Alternative etiology identified that explains acute worsening