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Guidelines
Etiology

Etiology

Etiology

Approximately ½ are viral and the other ½ are bacterial

Predominant Bacteria

M. catarrhalis

Less Common

Enterobacteriaceae

Risk factors:

  • FEV1 <35%
  • Systemic steroid use (≥10mg oral prednisolone x at least 2 weeks)
  • Bronchiectasis
  • Recent Abx use
  • Recent hospitalization
  • Prior respiratory cultures with Pseudomonas or Enterobacteriaceae