< 4 exacerbations/year and at least 2 of the following criteria:

  • ↑ sputum volume
  • ↑ sputum purulence
  • ↑ dyspnea
Usual Pathogens

Haemophilus spp
S. pneumoniae
Moraxella catarrhalis

First line agents

Empiric Therapy Dose Duration
Amoxicillin 1g PO tid 5-7 days
or    
Doxycycline 200mg PO once, then 100mg PO bid 5-7 days
or    
TMP/SMX 1 DS tab PO bid 5-7 days

Failure of first line agents

See ≥ 4 exacerbations/year and at least 2 of the following criteria: