RT Journal Article SR Electronic T1 Bacteriological Differences Between COPD Exacerbation and Community-Acquired Pneumonia JF Respiratory Care FD American Association for Respiratory Care SP 1818 OP 1824 DO 10.4187/respcare.00915 VO 56 IS 11 A1 Xue-Jun Li A1 Qi Li A1 Liang-Yi Si A1 Qiao-Ying Yuan YR 2011 UL http://rc.rcjournal.com/content/56/11/1818.abstract AB OBJECTIVE: To study the differences in pathogen distribution and antibiotic susceptibility between patients with COPD exacerbation and patients with community-acquired pneumonia, and develop guidance for antibiotic treatment of those conditions. METHODS: We retrospectively analyzed the medical records of 586 COPD-exacerbation patients and 345 community-acquired-pneumonia patients from January 2007 to December 2008, including sputum culture results, antibiotic susceptibilities of the microorganisms, and clinical characteristics. RESULTS: 276 (47%) of the COPD-exacerbation patients, and 183 (53%) of the community-acquired-pneumonia patients had a positive sputum culture. In order, the most common pathogens in the COPD-exacerbation patients were Pseudomonas aeruginosa, Escherichia coli, Klebsiella pneumoniae, Staphylococcus aureus, Acinetobacter baumannii, and Haemophilus influenzae. The most common pathogens in the community-acquired-pneumonia patients were Streptococcus pneumoniae, H. influenzae, K. pneumoniae, S. aureus, and E. coli. CONCLUSIONS: P. aeruginosa was the most common pathogen in our patients with COPD exacerbation, and S. pneumoniae was the most common in our patients with community-acquired pneumonia. P. aeruginosa is especially common in the patients with serious or extremely serious COPD.