A 67-year-old woman with known bronchiectasis presents with 2 days of worsening dyspnea and cough productive of 2 tablespoons of green sputum streaked with blood. She reports struggling to walk 1 city block. She has no fever or systemic symptoms. At baseline, she is able to walk 2 blocks and
Arbiv et al. (Sun,) studied this question.
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